494 results on '"riverbank filtration"'
Search Results
52. Evaluating Kinetic and Probabilistic Approaches for Describing Pathogen Variation during Riverbank Filtration.
- Author
-
Thakur, Aseem K., Ojha, Chandra Shekhar P., Singh, Vijay P., Rai, C. B., and Kashyap, Vidisha
- Subjects
DRINKING water quality ,RIPARIAN areas ,WATER quality ,DRINKING water standards ,FILTERS & filtration - Abstract
Evaluating kinetic and probabilistic approaches for describing pathogen variation in riverbank filtration (RBF) was conducted at a site at Muzaffarpur, Bihar, India. The total coliform (TC) was observed in the range of 1,600–110 counts per 100 mL of water sample in the Burhi Gandak River, and from four to two counts per 100 mL of water sample from a pumping well for longer than one year during 2010–11. As the polluted river water moves from river to the production well, the water quality is improved because of RBF. It was observed that the river water quality did not meet WHO and Bureau of Indian Standards of drinking water quality, especially in case of TC. Considering this, simplified models, such as deterministic and probabilistic approaches, have been applied and their utilities were tested at the Muzaffarpur RBF site. Using the resultant water quality from the river and the water quality from RBF, kinetic models as well as a semi-empirical probabilistic model were used to investigate the variation in the bacteriological quality of the river water. The kinetic coefficient and probability of clogging both varied with the natural logarithm of concentrations of TC in the river water. It was observed that the kinetic approach and the probabilistic approach both had potential for simulating the variation of pathogen in source water and riverbank filtrate at the RBF Muzaffarpur site. [ABSTRACT FROM AUTHOR]
- Published
- 2021
- Full Text
- View/download PDF
53. Determination of Water Resources in Tube Well Using Hydrofacies for Riverbank Filtration
- Abstract
The reliability of water in riverbank filtration application is hard to be determined since the source of water and what happen at below ground cannot be see. These difficulties give effect for application of riverbank filtration since it is important in determination of its water quality and quantity. Due to that, this method was suggested to be used to determine the source of water in pumping well (PW) at Lubok Buntar, Kedah. The soil and water samples were taken from the PW and river water to determine the soil type and major ion (anion and cations). The results show that most of PW soil type is sandy loam (52%). Based on the piper diagram of the hydrofacies showed that the RW and PW were connected for a certain period of time. The most predominant cation in the PW was Na2+-CI-, consequently, the tube well water mostly came from groundwater rather than from river water. Therefore, this location is suitable for riverbank filtration applications as it has two reliable water sources. Due to that, for riverbank filtration water treatment, the river and groundwater water quality and quantity is important in order to make sure the system is reliable and sustainable.
- Published
- 2023
54. Contaminant Removal and Precious Metal Recovery by Lateral Channel Filtration in Mining-Impacted Alluvial Floodplains
- Author
-
William P. Johnson, Eddy Pazmiño, Logan Frederick, Cesar Ron, Andrea Chica, and Luis Tapia
- Subjects
Riverbank filtration ,mercury ,trace metals ,alluvial gold ,hyporheic ,Environmental technology. Sanitary engineering ,TD1-1066 - Abstract
Water quality impacts from artisanal and small-scale alluvial (placer) gold mining operations occur in developing economies across several continents including Asia, Africa, and South America. They often occur in remote and/or resource-poor settings in which mitigation strategies must contend with extreme seasonal variation in river flow as well as the economic incentive to periodically churn (mine) alluvial floodplains without riparian restoration. A novel strategy addressing these constraints is herein explored which employs the alluvial floodplain for filtration-driven removal of particulate contaminants and gold from streams. This process of lateral channel filtration is explored in the Rio Nambija of southern Ecuador, in terms of success in achieving the hydraulic objective of passively driven lateral flow, and the corresponding removal of particulate contaminants (e.g., total mercury, lead, iron, and manganese) by filtration. Accumulation of gold was examined to evaluate whether incorporation of this proposed practice in alluvial (placer) mining can reduce particle-bound contaminants in streams and simultaneously increase economic benefit. Excavation of channels lateral to mining-impacted streams was shown to achieve the hydraulic, water quality, and economic (gold accumulation) objectives. The modest flow capture for any given lateral segment, along with the months-long timescale associated with economic gold accumulation and clogging by suspended solids, dictate a “cultivation” process whereby multiple lateral segments are worked annually.
- Published
- 2020
- Full Text
- View/download PDF
55. Riverbank Filtration: A Sustainable Process to Attenuate Contaminants during Drinking Water Production
- Author
-
Pradeep Kumar, Indu Mehrotra, Ankush Gupta, and Soma Kumari
- Subjects
Riverbank filtration ,Lakebank filtration ,Water quality ,Drinking water ,Coliforms ,Production wells ,Surface water ,Ground water ,Technology ,Economic growth, development, planning ,HD72-88 - Abstract
Riverbank filtration leads to purification of water. For India it can be a simple, economical and effective alternative. A few unanswered questions were: Can it work in Indian mountainous regions? Will it be of any advantage in the case of some of the polluted Indian surface waters? With the goal to evaluate use of riverbank filtration as a sustainable technology under widely varying conditions prevalent in India, the effectiveness of riverbank filtration has been examined over the last 10 years. In the case of cleaner surface waters, the wells deliver water free of turbidity and coliform even during monsoon irrespective of well configuration. In the case of polluted source waters, it results in an overall advantage in terms of improved raw water quality, reduced degree and cost of subsequent treatment and decreased levels of disinfection by-products. The study shows riverbank filtration to be an effective and sustainable option for plains as well as the mountainous region.
- Published
- 2018
- Full Text
- View/download PDF
56. Heavy Metal Removal from the Water of the River Nile Using Riverbank Filtration
- Author
-
Mohamed H. Hegazy, Ahmed Essam, Ashraf Y. Elnaggar, and Enas E. Hussein
- Subjects
riverbank filtration ,water quality ,water quality index ,treatment process ,weighted arithmetic method ,Hydraulic engineering ,TC1-978 ,Water supply for domestic and industrial purposes ,TD201-500 - Abstract
Riverbank filtration (RBF) is considered as a natural treatment process. During this process, a group of chemical, physical, and biological processes occur when water moves through the soil along the bank of the River Nile, which can act as a conventional treatment process. RBF is one of the most effective solutions that the Egyptian government and responsible parties should embrace. Egypt has started to use the RBF technique widely in many sites through the path of the River Nile. This study provides a detailed analysis of the RBF technique; it represents the outlet quality of the water in a study performed on the River Nile. The effect of RBF on water quality can be measured using the software designed for this study. The study’s main aim is to improve the water quality of the River Nile by removing heavy metals from the water by using an effective and fast method of treatment, which is riverbank filtration. The results of the research’s experimental study show the average percentage of metal removal for iron, cobalt, lead, zinc, and copper are 74.04%, 74.44%, 70.72%, 75.1%, and 70.8%, respectively. These results have proved that RBF acts as a substantial barrier versus heavy metals.
- Published
- 2021
- Full Text
- View/download PDF
57. Vulnerabilidad intrínseca de las aguas subterráneas en la cuenca Almendares -Vento.
- Author
-
Valcarce Ortega, Rosa María, Vega Carreño, Marina, Rodríguez Miranda, Willy, and Suárez González, Oscar
- Subjects
- *
GROUNDWATER , *PSYCHOLOGICAL vulnerability , *DISASTER resilience , *RIVERBANK filtration , *SOIL protection , *WATERSHEDS - Abstract
The natural vulnerability of Almendares - Vento basin was assessed by applying the RISK method. This method evaluates four variables: aquifer rock (R), infiltration conditions (I), cover or protective soil (S) and karstification (K). This method is modified through the evaluation of the protective cover or soil by applying the EVERC method. The natural vulnerability map of the basin was obtained at 1:100 000 scale. This research contributes significantly to the development of aquifer protection plans. [ABSTRACT FROM AUTHOR]
- Published
- 2020
58. Full-scale evaluation of organic matter removal in riverbank filtration in Korea.
- Author
-
Seong Yong Han, Sungpyo Kim, Kyung-Hoon Moon, Seong-han Kim, Jei-cheol Jeon, and Tae-Mun Hwang
- Subjects
RIPARIAN areas ,ORGANIC compounds ,FILTERS & filtration ,WATER supply ,WATER - Abstract
Since 1998, both small-scale and full-scale riverbank filtration (RBF) has been introduced in South Korea to secure a stable supply of water. From 2015, a full-scale RBF plant has been in operation with a collector well capacity of 44,900 m³/d, which is the largest in South Korea and one of the largest RBF facilities in the world. From the analysis, 58%~59% of the natural organic matter (NOM) was removed from the river water through the RBF process and the hydrophobic organic carbon content was increased from 3%–5% to 11%–17%. Aromatic compounds, building blocks, and neutral components with a molecular weight of 350–1,000 g/mol were not removed as efficiently as those with lower molecular weight. Therefore, if there is a high content of those components, the removal rate of NOM during the RBF process could decrease. There was not a significant difference in NOM removal in the laterals to depth. The results of this study are in accordance with previous research. The removal of NOM generally occurs during the first several meters on the boundary of the river/ aquifer. The total organic carbon (TOC) concentration in the filtrated water fluctuates with the TOC in the river water. This resource is judged to be “groundwater under the direct influence of surface water”, and additional water treatment is mandatory after RBF to ensure the safety for potable use. [ABSTRACT FROM AUTHOR]
- Published
- 2020
- Full Text
- View/download PDF
59. Berechnung von Stromlinien im Einzugsbereich von Horizontalfilterbrunnen bei der Uferfiltration.
- Author
-
Mayr, Ernest, Gauster, Tobias, and Perfler, Reinhard
- Abstract
Copyright of Österreichische Wasser- und Abfallwirtschaft is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2019
- Full Text
- View/download PDF
60. Möglichkeiten zur Optimierung eines bestehenden Grundwassermodells zur besseren Beurteilung der Wasserqualität bei der Untersuchung der chemischen Stabilität von Uferfiltrat.
- Author
-
Handl, Sebastian, Mayr, Ernest, and Perfler, Reinhard
- Abstract
Copyright of Österreichische Wasser- und Abfallwirtschaft is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2019
- Full Text
- View/download PDF
61. Einsatz der Grundwassermodellierung zur Unterstützung der quantitativen Beweissicherung beim Bau des BOKU-Forschungsgerinnes Nußdorf.
- Author
-
Mayr, Ernest, Handl, Sebastian, and Perfler, Reinhard
- Abstract
Copyright of Österreichische Wasser- und Abfallwirtschaft is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2019
- Full Text
- View/download PDF
62. Assessment of riverbank filtration performance for climatic change and a growing population
- Author
-
Abd-Elaty, I, Kuriqi, A, Ganayem, HM, Ahmed, A, Saleh, OK, and Garrote, L
- Subjects
riverbank filtration ,river stages ,water budget and water quality ,constant heads ,pumping ,General Environmental Science - Abstract
Data availability statement The original contributions presented in the study are included in the article/Supplementary Material; further inquiries can be directed to the corresponding authors. Copyright © 2023 Abd-Elaty, Kuriqi, Ganayem, Ahmed, Saleh and Garrote. Riverbank filtration (RBF) consists of green drinking water production in many regions and is used as a pre-treatment phase. This study investigates the performance of the RBF in the Nile delta, Egypt, for climate change and population growth scenarios of 2030, 2040, and 2050. This study presents a new method for predicting the sharing of riverbanks considering three cases: i) the river stage controlling the water levels in the river, ii) increasing RBF pumping, and iii) changing the groundwater levels. This last scenario is achieved by changing the general head in the MODFLOW model. The results showed that RBF sharing (RBFS) is a proportion of the river leakage inflow, in which the decrease of the river stage due to the influence of climate change reduced the river leakage inflow and RBFS. In addition, increasing RBF pumping, decreasing RBF pumping, and lowering the groundwater levels due to the increase in the future drinking water pumping for the population growth increased the river leakage inflow and RBFS. Finally, combining the three cases decreased RBFS in the coming years of 2030, 2040, and 2050, respectively, due to more groundwater sharing than the river inflow. The results show that the water budget is a good tool to investigate RBFS compared with MT3D results. This technique can reduce the cost of water quality collection and analysis; moreover, it will help with the estimation of RBF and save time compared with solute transport modeling. AK is grateful for the Foundation for Science and Technology’s support through funding UIDB/04625/2020 from the research unit CERIS.
- Published
- 2023
63. Effect of Vibration on Hydraulic Conductivity of Clogged Soil
- Author
-
Baharudin, Fauzi, Harun, Mohd Shafee, Roslee, Nur Syafiqah, Hassan, Rohana, editor, Yusoff, Marina, editor, Alisibramulisi, Anizahyati, editor, Mohd Amin, Norliyati, editor, and Ismail, Zulhabri, editor
- Published
- 2015
- Full Text
- View/download PDF
64. A Study on the Soil Properties and Subsurface Characterization for Riverbank Filtration by using 2-D Electrical Resistivity Method at Jenderam Hilir, Dengkil, Selangor.
- Author
-
Nasir, M. 'A. J. A., Jani, J., and Baharudin, F.
- Subjects
- *
RIVERBANK filtration , *SOIL moisture , *SOIL physics , *RIVERS , *ELECTRICAL resistivity - Abstract
The Riverbank filtration (RBF) study in Jenderam Hilir, Selangor is a pilot project to develop a better and sustainable source of water and will provide a good platform to introduce this method in Malaysia. This study has been carried out to identify the soil characteristics of the riverbank soil of the monitoring well and resistivity at the riverbank of Langat River. Soil samples taken from adjacent monitoring wells namely Monitoring Well 1, Monitoring Well 3 and Monitoring Well 4 were initially examined for the Particle Size Distribution (PSD) according to British Standard 1377: Part 2:1990. PSD of the soils was obtained from sieve analysis and hydrometer method. Sieve analyses of the soil were performed to support of geological bore logs while the hydrometer method is used to determine the distribution of finer particles. Resistivity, which uses current to measure the resistivity of the subsurface, was used during this project. Resistivity was measured through an ABEM SAS 4000 Terrameter by using a Wenner-Schlumberger array. 2 resistivity lines were executed by using a 1.5m spacing of electrode. The resistivity data were then processed and interpreted using the RES2DINV software. Results from both tests shown that at MW3 which is located at the top of the surface layer which is 0 to 4 meter can be classified as sandy silt with a resistivity value of 11-60Ωm. While for MW1 and MW4 the resistivity value shows 60 - 200 Ω which is classified as silty sand type. From the results, it has revealed that the study about the process of losing or gaining of river water passing through riverbank material towards a production well is carried out. [ABSTRACT FROM AUTHOR]
- Published
- 2018
- Full Text
- View/download PDF
65. Transport and retention of differently coated CeO2 nanoparticles in saturated sediment columns under laboratory and near-natural conditions.
- Author
-
Degenkolb, Laura, Dippon, Urs, Pabst, Silke, and Klitzke, Sondra
- Subjects
NANOPARTICLES ,SEDIMENTS ,WATER quality ,POLYACRYLIC acid ,CERIUM oxides - Abstract
Where surface-functionalized engineered nanoparticles (NP) occur in drinking water catchments, understanding their transport within and between environmental compartments such as surface water and groundwater is crucial for risk assessment of drinking water resources. The transport of NP is mainly controlled by (i) their surface properties, (ii) water chemistry, and (iii) surface properties of the stationary phase. Therefore, functionalization of NP surfaces by organic coatings may change their fate in the environment. In laboratory columns, we compared the mobility of CeO
2 NP coated by the synthetic polymer polyacrylic acid (PAA) with CeO2 NP coated by natural organic matter (NOM) and humic acid (HA), respectively. The effect of ionic strength on transport in sand columns was investigated using deionized (DI) water and natural surface water with 2.2 mM Ca2+ (soft) and 4.5 mM Ca2+ (hard), respectively. Furthermore, the relevance of these findings was validated in a near-natural bank filtration experiment using HA-CeO2 NP. PAA-CeO2 NP were mobile under all tested water conditions, showing a breakthrough of 60% irrespective of the Ca2+ concentration. In contrast, NOM-CeO2 NP showed a lower mobility with a breakthrough of 27% in DI and < 10% in soft surface water. In hard surface water, NOM-CeO2 NP were completely retained in the first 2 cm of the column. The transport of HA-CeO2 NP in laboratory columns in soft surface water was lower compared to NOM-CeO2 NP with a strong accumulation of CeO2 NP in the first few centimeters of the column. Natural coatings were generally less stabilizing and more susceptible to increasing Ca2+ concentrations than the synthetic coating. The outdoor column experiment confirmed the low mobility of HA-CeO2 NP under more complex environmental conditions. From our experiments, we conclude that the synthetic polymer is more efficient in facilitating NP transport than natural coatings and hence, CeO2 NP mobility may vary significantly depending on the surface coating. [ABSTRACT FROM AUTHOR]- Published
- 2019
- Full Text
- View/download PDF
66. Sulfonamides removal under different redox conditions and microbial response to sulfonamides stress during riverbank filtration: A laboratory column study.
- Author
-
Bai, Ying, Ruan, Xiaohong, Wang, Feifei, Antoine, Garnier, and van der Hoek, Jan Peter
- Subjects
- *
SULFONAMIDES , *RIVERBANK filtration , *PATHOGENIC microorganisms , *BIODEGRADATION , *PHYLOGENY - Abstract
Abstract Riverbank filtration (RBF) as a barrier of pathogenic microorganisms and organic micropollutants recently has been proven capable of removing sulfonamides. However, the study about the effect of redox conditions on biodegradation of common and persistent sulfonamides in RBF is limited and the response of microbial communities to sulfonamides stress during RBF is unknown. In this study, two column set-ups (with residence time 5 days and 11 days respectively), simulating different redox conditions of riverbank filtration systems, were operated for seven months to investigate 1) the long-term effect of redox conditions on ng∙L−1 level sulfonamides (sulfapyridine, sulfadiazine, sulfamethoxazole, sulfamethazine, sulfaquinoxaline) removal, and 2) the microbial community evolution represented by the phylogenetic and metabolic function shift under non-lethal selective pressures of sulfonamides. The results showed that sulfonamides were more degradable under anoxic conditions than oxic and suboxic conditions. In the sulfonamides stressed community, the phylogenetic diversity increased slightly. Relative abundance of an intrinsic sulfonamides resistant bacteria Bacillus spp. increased, suggesting that sulfonamide resistance developed in specific bacteria under sulfonamides contamination pressure in RBF systems. At the same time, an activated transport function in the stressed microbial community was noticed. The predicted relative abundance of gene folP , which encodes dihydropteroate synthase, also increased significantly, indicating a detoxification mechanism and sulfonamides resistance potential under non-lethal selective pressures of sulfonamides in RBF systems. Graphical abstract Image 1 Highlights • Longer residence time and anoxic condition will benefit sulfonamides (SNs) attenuation in RBF. • Phylogenetic diversity of bacterial community increased slightly under SNs stress. • SNs resistance developed in specific bacteria under selective pressure. • Activated transport function in bacterial community was developed under SNs stress. [ABSTRACT FROM AUTHOR]
- Published
- 2019
- Full Text
- View/download PDF
67. The impact of well drawdowns on the mixing process of river water and groundwater and water quality in a riverside well field, Northeast China.
- Author
-
Zhu, Yaguang, Zhai, Yuanzheng, Du, Qingqing, Teng, Yanguo, Wang, Jinsheng, and Yang, Guang
- Subjects
RESERVOIR drawdown ,RIVERBANK filtration ,WATER quality ,HYDRODYNAMICS - Abstract
Riverbank filtration (RBF) has been widely used throughout the world as an effective means to regulate surface water and groundwater resources and pretreat raw water for municipal water supply. The quality of the water from a riverside well field and the mixing ratios of surface water and groundwater is primarily impacted by the hydrodynamic processes in the RBF system. The RBF system is largely controlled by the water exploiting system in addition to the natural hydrologic condition of the river–aquifer system. As one of the most important design parameters of the riverside well field, the drawdown of groundwater level greatly determines the water head differences between the river water and groundwater as well as the field flow net, which subsequently impacts the mixing of river water and groundwater and water quality significantly. This study aimed to improve the understanding of the mixing process between the surface water and groundwater and estimate the impact of the RBF on the mixing ratio of surface water–groundwater and water quality quantitatively. A set of field pumping tests with various groundwater level drawdowns were carried out independently and successively at a riverside field with a single pumping well near the Songhua River in Northeast China in August 2017. During these tests, the water levels and hydrochemical parameters of the Songhua River, the adjacent aquifer, and the pumping well were monitored. The dynamic mixing process of the river water and groundwater and water quality under various drawdown conditions were analysed systematically using analytical methods. The results obtained from Dupuit method and the Mirror Image method in conjunction with the Hydrochemical Tracing method showed that the pumping water directly from the river water reached 60% ± 10% after a steady flow net was established. The larger the proportion of the pumping water captured from the river, the better quality of the pumping water was, because the quality of the river water (only limited to some water quality parameters monitored which were minority) was better than that of the groundwater. The results also showed that total Fe, TDS, total hardness, CODMn, and K+ were relatively sensitive to the changes of groundwater drawdown, and their concentrations decreased with an increase in the groundwater drawdown. It can be concluded that both the mixing ratio of the surface water and the groundwater and the water quality of the riverside well field can be regulated through adjusting the designed drawdown of the groundwater level, which is helpful for the design and the optimization of the riverside well water intake engineering. [ABSTRACT FROM AUTHOR]
- Published
- 2019
- Full Text
- View/download PDF
68. Spatiotemporal resolved sampling for the interpretation of micropollutant removal during riverbank filtration.
- Author
-
van Driezum, Inge H., Derx, Julia, Oudega, Thomas J., Zessner, Matthias, Naus, Floris L., Saracevic, Ernis, Kirschner, Alexander K.T., Sommer, Regina, Farnleitner, Andreas H., and Blaschke, Alfred Paul
- Abstract
Abstract Riverbank filtration (RBF) systems along rivers are widely used as public water supplies. In these systems, many organic micropollutants (OMPs) are attenuated, but some compounds have shown to be rather persistent. Their fate and transport has been studied in RBF sites along lakes and small rivers, but not extensively along large and dynamic rivers. Therefore, the influence of flood events on OMP behavior in these large and dynamic RBF sites was investigated. Monthly samples were taken from surface- and groundwater up to a distance of 900 m from the riverbank of the Danube from March 2014 till May 2016. Two flood events were sampled more extensively nearby the river. Results showed that changes in flow conditions in the river not only caused changes in OMP concentrations, but also in their load. It was seen that the load of benzotriazole, carbamazepine and sulfamethoxazole in the river increased with increasing river discharges. After a relatively long, oxic groundwater passage, several OMPs were reduced. In contrast to previous work, we found that benzotriazole was almost fully removed under oxic conditions. When entering the aquifer, benzotriazole concentrations were significantly reduced and at a distance of 550 m from the river, >97% was degraded. Carbamazepine and sulfamethoxazole showed relatively persistent behavior in the aquifer. The concentrations measured during flood events were in the same range as seasonal sampling. Furthermore concentrations in the groundwater were higher during these events than in the Danube and can reach further into the aquifer. During flood events some highly degradable compounds (i.e. diclofenac) were found up to a distance of 24 m from the river. These results implied that drinking water utilities with RBF wells in oxic, alluvial aquifers located close to highly dynamic rivers need to consider a potential reduction in groundwater quality during and directly after flood events. Graphical abstract Unlabelled Image Highlights • OMP fate was studied along an RBF system under normal and elevated conditions • Benzotriazole was almost fully removed during RBF under oxic conditions • Carbamazepine and sulfamethoxazole showed a relatively persistent behavior • Increase in load of several OMPs in the river observed during flood events • OMP concentrations in the groundwater were far below drinking water guideline values [ABSTRACT FROM AUTHOR]
- Published
- 2019
- Full Text
- View/download PDF
69. Evaluation of riverbank filtration in the removal of pesticides: an approximation using column experiments and contaminant transport modeling.
- Author
-
Jaramillo, Marcela, Grischek, Thomas, Boernick, Hilmar, and Velez, Jaime I.
- Subjects
RIVERBANK filtration ,ATRAZINE ,AMETRYN ,CARBOFURAN ,DIURON ,GROUNDWATER - Abstract
Abstract: The potential of riverbank filtration in the removal of five pesticides commonly used in Colombia (atrazine, ametryn, carbofuran, diuron and propanil) was evaluated through a series of column experiments and solute transport modeling. The experiments consisted of two soil columns run under saturated regime, with sediments and water collected from the rivers Loessnitztal and Elbe (East Germany), respectively. Six experiments were performed at 10 and 20 °C, and the final concentrations of the pesticides were used to solve the one-dimensional advection-dispersion equation using an inverse approach. Variables such as retardation factor, first-order degradation coefficient, and dispersion coefficient were assessed for all the pesticides except propanil, which rapidly degraded in solution. The parameters obtained for one of the experiments were introduced into a groundwater flow model from the Loessnitztal site, and the code MT3DMS was used to simulate a contaminant pulse coming from the river. Four different scenarios were considered to determine the effect of adsorption and degradation on the fate of the pesticides. The results showed that, although the persistence of pesticides depends on the properties of each compound, a maximum of 30% removal was achieved during the column experiments, and a log removal of 9 through the numerical modeling. Because of the sensitivity of the fate of contaminants to sorption and degradation, field and laboratory work should be carried on to determine the removal coefficient of the dissolved and adsorbed phases of the compounds, the type of degradation to be expected, and the real values of longitudinal and transverse dispersivity.Graphical Abstract: [ABSTRACT FROM AUTHOR]
- Published
- 2019
- Full Text
- View/download PDF
70. Natural recovery of infiltration capacity in simulated bank filtration of highly turbid waters.
- Author
-
Gutiérrez, Juan Pablo, van Halem, Doris, Uijttewaal, Wim S.J., del Risco, Efraín, and Rietveld, Luuk C.
- Subjects
- *
SEDIMENTS , *AQUIFERS , *SOIL infiltration , *BODIES of water , *STORMWATER infiltration - Abstract
Abstract As a consequence of the suspended sediments in river water, cake formation on the streambed and clogging of the aquifer may occur, leading to a decline in the production yield of riverbank filtration systems, particularly in highly turbid river waters. However, naturally occurring flow forces may induce sufficient scouring of the streambed, thereby self-regulating the thickness of the formed cake layer. This study assessed the recovery of the infiltration capacity in a simulated physically clogged riverbank filtration system, due to self-cleansing processes. A straight tilting flume, provided with an infiltration column at the bottom, was used for emulating clogging, infiltration and self-cleansing. Based on the presented research it may be concluded that the infiltration of a mixture of different sediments, as found in natural water bodies, can already be recovered at low shear stresses. Clay and silt behaved very differently, due to the difference in cohesiveness. Clay was found to produce a persistent sticky cake layer, whereas silt penetrated deeper into the bed, both resulting in an absence of infiltration velocity recovery. A cake layer of fine sand sediments was easiest to remove, resulting in dune formation on the streambed. However, due to deep bed clogging by fine sand particles in a coarser streambed, the infiltration velocity did not fully recover. The interaction between mixed suspended sediments (5% clay, 80% silt, and 15% fine sand) resulted in uneven erosion patterns during scouring of the streambed and recovery of the infiltration velocity is low. Altogether it may be concluded that natural recovery of infiltration capacity during river bank filtration of highly turbid waters is expected to occur, as long as the river carries a mixture of suspended sediments and the sand of the streambed is not too coarse. Graphical abstract Image 1 Highlights • Clay particles are mostly retained in the cake layer, mainly at high concentrations. • The interaction amongst different suspended particles onsets new clogging mechanisms. • The suspended particle type governs the self-cleansing of the streambed. • The infiltration rate never recovers to its initial capacity. [ABSTRACT FROM AUTHOR]
- Published
- 2018
- Full Text
- View/download PDF
71. Pathogens in crop production systems irrigated with low-quality water in Bolivia.
- Author
-
Perez-Mercado, Luis Fernando, Lalander, Cecilia, Joel, Abraham, Ottoson, Jakob, Iriarte, Mercedes, Oporto, Carla, and Vinnerås, Björn
- Subjects
- *
AGRICULTURAL productivity , *PHYTOPATHOGENIC microorganisms , *WATER quality , *WASTEWATER treatment , *IRRIGATION - Abstract
In dry areas, the need for irrigation to ensure agricultural production determines the use of all available water sources. However, the water sources used for irrigation are often contaminated by untreated or minimally treated wastewater. Microbial risks from reusing wastewater for vegetable irrigation can be addressed by installing environmental barriers that pathogens must cross to reach humans in the reuse system. Knowledge of pathogen flows inside the system and pathogen removal potential is the first step towards devising a risk management strategy. This study assessed microbe prevalence in farming systems in the Bolivian highlands that use wastewater-polluted sources for irrigation of lettuce. Samples of soil, lettuce and different water sources used in the farming systems were taken during one crop season and concentrations of coliphages, Escherichia coli and helminth eggs were measured. The results showed high spread of these microorganisms throughout the whole system. There was a significant correlation between microbial quality of water and of the harvested produce for several microorganisms. The microbial prevalence in protected shallow wells was found to be significantly lower than in other water sources. These findings can help formulate feasible risk management strategies in contexts where conventional technologies for microbial removal are not possible. [ABSTRACT FROM AUTHOR]
- Published
- 2018
- Full Text
- View/download PDF
72. Modelling The Effect of Hydraulic Conductivity on One Dimensional Contaminant Transport in RBF System.
- Author
-
Shaymaa Mustafa, Zainal Abdul Aziz, Arifah Bahar, and Mohd Khairul Nizar Shamsuddin
- Subjects
- *
RIVERBANK filtration , *HYDRAULIC conductivity , *WASTEWATER treatment - Abstract
Riverbank filtration (RBF) system is a surface water technology that is based on the natural treatment of filtration instead of the use of chemicals, to pre-treat surface water and provides public water supplies. Hydraulic conductivity value is one of the significant factors affecting the water quality in RBF systems. In this article, an analytical modelling is developed to investigate the effect of this parameter on one dimensional contaminant transport in RBF system. The model is solved by using Green's function approach. The model is applied for the first RBF system conducted in Malaysia. Generally, the results show that increasing the hydraulic conductivity value lead to an increase in contaminant concentration in pumping well area. [ABSTRACT FROM AUTHOR]
- Published
- 2018
- Full Text
- View/download PDF
73. Effect of a Flood in the Amur River on Organic Matter Dynamics in Groundwater.
- Author
-
Kondrat’eva, L. M. and Andreeva, D. V.
- Subjects
FLOODS ,CARBON content of water ,GROUNDWATER ,HYDROCARBONS ,DIPHENYLAMINE - Abstract
The space and time dynamics of organic matter concentration in groundwater in the Tungusskoe deposit during the historical 2013 flood in the Amur River is discussed. For comparison analysis, several methods for determining the quantitative characteristics of organic matter (spectrophotometry, gas-chromatographic mass spectrometry, and high-performance liquid chromatography) were applied to different layers of an aquifer at different distances from the shore line. The genesis of many organic substances is due to the inflow of river filtrate and surface water from the inundated floodplain. In the post-flood 2014, groundwater showed a decrease in the total amount of organic components and the presence of low-molecular hydrocarbons, diphenylamine, cosanes, phenanthrene, naphthalene, and derivatives of stearic and palmitic acids. Toxic methyl benzene was identified in most wells. [ABSTRACT FROM AUTHOR]
- Published
- 2018
- Full Text
- View/download PDF
74. A field study on the construction of a flood-proof riverbank filtration well in India – Challenges and opportunities.
- Author
-
Musche, Fabian, Sandhu, Cornelius, Grischek, Thomas, Patwal, Pooran S., Kimothi, Prakash C., and Heisler, Andreas
- Abstract
Abstract In light of the direct entry of surface water by inundation during floods and extreme rainfall events into riverbank filtration (RBF) wells and the consequent risk of contamination, this study discusses the state of the art of sealing the borehole annulus and well headworks in some developing countries exemplified by northern India in context to established guidelines and standards. Accordingly a market survey was conducted and a concept was developed to construct watertight wellhead elements and a flood-proof well chamber. The concept was implemented through the fabrication of the major components of a watertight wellhead in India and the subsequent construction of watertight headworks and a flood-proof chamber for a RBF well in Srinagar (Uttarakhand, India). The study showed that water wells at risk of flooding in general can be made flood-proof. A novel concept of deliberately flooding the well chamber was tested and proved successful. Although the fabrication enterprises and suppliers of well construction material in India currently do not produce non-standardised or special purpose well components, experience from the current study shows that local small-medium enterprises engaged in the unorganized metal working sector possess the technical competence to fabricate some of the major components but in limited numbers. The familiarisation of water supply practitioners and the well construction industry in India on the need and measures to flood-proof wells must be continued through information and education campaigns. [ABSTRACT FROM AUTHOR]
- Published
- 2018
- Full Text
- View/download PDF
75. New Methods for Microbiological Monitoring at Riverbank Filtration Sites
- Author
-
Yasmin Adomat, Gerit-Hartmut Orzechowski, Marc Pelger, Robert Haas, Rico Bartak, Zsuzsanna Ágnes Nagy-Kovács, Joep Appels, and Thomas Grischek
- Subjects
online flow-cytometry ,enzymatic activity ,riverbank filtration ,ultrafiltration ,atp ,Hydraulic engineering ,TC1-978 ,Water supply for domestic and industrial purposes ,TD201-500 - Abstract
Water suppliers aim to achieve microbiological stability throughout their supply system by regular monitoring of water quality. Monitoring temporal biomass dynamics at high frequency is time consuming due to the labor-intensive nature and limitations of conventional, cultivation-based detection methods. The goal of this study was to assess the value of new rapid monitoring methods for quantifying and characterizing dynamic fluctuations in bacterial biomass. Using flow cytometry and two precise enzymatic detection methods, bacterial biomass-related parameters were monitored at three riverbank filtration sites. Additionally, the treatment capacity of an ultrafiltration pilot plant was researched using online flow-cytometry. The results provide insights into microbiological quality of treated water and emphasize the value of rapid, easy and sensitive alternatives to traditional bacterial monitoring techniques.
- Published
- 2020
- Full Text
- View/download PDF
76. Migration of Pharmaceuticals from the Warta River to the Aquifer at a Riverbank Filtration Site in Krajkowo (Poland)
- Author
-
Roksana Kruć, Krzysztof Dragon, and Józef Górski
- Subjects
riverbank filtration ,pharmaceuticals in groundwater ,removal of pharmaceuticals ,Hydraulic engineering ,TC1-978 ,Water supply for domestic and industrial purposes ,TD201-500 - Abstract
Studies on the presence of pharmaceuticals in water were carried out on the riverbank filtration site, Krajkowo−Poznań (Poland). A preliminary investigation conducted in 3 sampling points showed the presence of pharmaceuticals in both surface water and bank filtrate. Based on the above, an extended analysis was made in July, August and October 2018 and included surface water and wells located at a different distance (5−250 m) and travel time (1−150 days) from source water (Warta River). Firstly, 75 compounds (antibiotics, anti-inflammatory and analgesic drugs, psychotropic drugs, x-ray agents and β-blockers) were tested and 25 of them were detected in the river or bank filtrate. The highest concentrations were observed in source water and then were reduced along the flow path. The sampling points located close to the river (
- Published
- 2019
- Full Text
- View/download PDF
77. Role of ammonia-oxidizing microorganisms in the removal of organic micropollutants during simulated riverbank filtration
- Abstract
Biodegradation plays an important role in the removal of organic micropollutants (OMPs) during riverbank filtration (RBF) for drinking water production. The ability of ammonia-oxidizing microorganisms (AOM) to remove OMPs has attracted increasing attention. However, the distribution of AOM in RBF and its role in the degradation of OMPs remains unknown. In this study, the behavior of 128 selected OMPs and the distribution of AOM and their roles in the degradation of OMPs in RBF were explored by column and batch experiments simulating the first meter of the riverbank. The results showed that the selected OMPs were effectively removed (82/128 OMPs, >70% removal) primarily by biodegradation and partly by adsorption. Inefficiently removed OMPs tended to have low molecular weights, low log P, and contain secondary amides, secondary sulfonamides, secondary ketimines, and benzyls. In terms of the microbial communities, the relative abundance of AOM increased from 0.1%–0.2% (inlet-sand) to 5.3%–5.9% (outlet-sand), which was dominated by ammonia-oxidizing archaea whose relative abundance increased from 23%–72% (inlet-sand) to 97% (outlet-sand). Comammox accounted for 23%–64% in the inlet-sand and 1% in the outlet-sand. The abundances of AOM amoA genes kept stable in the inlet-sand of control columns, while decreased by 78% in the treatment columns, suggesting the inhibition effect of allylthiourea (ATU) on AOM. It is observed that AOM played an important role in the degradation of OMPs, where its inhibition led to the corresponding inhibition of 32 OMPs (5/32 were completely suppressed). In particular, OMPs with low molecular weights and containing primary amides, secondary amides, benzyls, and secondary sulfonamides were more likely to be removed by AOM. This study reveals the vital role of AOM in the removal of OMPs, deepens our understanding of the degradation of OMPs in RBF, and offers valu, Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public., Water Management
- Published
- 2022
- Full Text
- View/download PDF
78. Remediation potential of agricultural organic micropollutants in in-situ techniques: A review
- Abstract
Agricultural activities can be important source of organic pollution. In agricultural intensive areas, organic chemicals have a high possibility of entering the water cycle, which could pose a potential risk to human health. Low-cost and high efficiency in-situ techniques instead of energy and money consuming ones to control agricultural organic micropollutants (Agro-OMPs) in aquatic system are extremely needed. In this paper, emerging Agro-OMPs were discussed focusing on their occurrence, pathways and risks. The mechanisms, dominant parameters and effectiveness of riverbank filtration, riparian buffer zone, constructed wetland and permeable reactive barriers for removing these pollutants are presented and discussed. Ecological succession in Riverbank Filtration (RBF) system is worth noticing for its stability maintenance. Riparian buffer zone (RBZ) should be explored more focusing on flexibility improvement and construction standardization. Constructed wetland (CW) is quite efficient on antibiotic resistance genes (ARGs) attenuation, but the risk of ARGs propagation still exist. Besides, more innovations should be made on combination, field-scale application and long-term evaluation of in-situ remediation techniques, which will provide references for agricultural water management and water quality improvement., Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public., Sanitary Engineering
- Published
- 2022
- Full Text
- View/download PDF
79. Remediation potential of agricultural organic micropollutants in in-situ techniques: A review
- Abstract
Agricultural activities can be important source of organic pollution. In agricultural intensive areas, organic chemicals have a high possibility of entering the water cycle, which could pose a potential risk to human health. Low-cost and high efficiency in-situ techniques instead of energy and money consuming ones to control agricultural organic micropollutants (Agro-OMPs) in aquatic system are extremely needed. In this paper, emerging Agro-OMPs were discussed focusing on their occurrence, pathways and risks. The mechanisms, dominant parameters and effectiveness of riverbank filtration, riparian buffer zone, constructed wetland and permeable reactive barriers for removing these pollutants are presented and discussed. Ecological succession in Riverbank Filtration (RBF) system is worth noticing for its stability maintenance. Riparian buffer zone (RBZ) should be explored more focusing on flexibility improvement and construction standardization. Constructed wetland (CW) is quite efficient on antibiotic resistance genes (ARGs) attenuation, but the risk of ARGs propagation still exist. Besides, more innovations should be made on combination, field-scale application and long-term evaluation of in-situ remediation techniques, which will provide references for agricultural water management and water quality improvement., Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public., Sanitary Engineering
- Published
- 2022
- Full Text
- View/download PDF
80. Effect of Low-Frequency Electromagnetic Fields on the Escherichia coli Growth for Application in Riverbank Filtration.
- Author
-
Selamat, Rossitah, Abustan, Ismail, Arshad, Mohd Rizal, and Kamal, Nurul Hana Mokhtar
- Subjects
- *
WATER filtration , *ESCHERICHIA coli , *RIVERBANK filtration , *ELECTROMAGNETIC fields , *DRINKING water , *SAFETY - Abstract
A 50 Hz low-frequency electromagnetic field (LF-EMF) could give removal effect on the growth of Escherichia coli (E. coli) in the riverbank filtration (RBF) was studied. The LF-EMF strengths were varied from 2 to 10 mT using coil column induce magnetic fields. For this study, two different columns with a diameter of 50 mm and 80 mm were applied; 1.5mm copper wires with the number of turns between 300 to 600 turns. Water samples were flowed into the column at flowrate of 50mL/min with temperature in range of 28-30°C. This study, it was found that the LF-EMF has significant removal effects on E. coli growth, where the removal of 100% of E. coli at 6 mT and 8 mT after 6 hrs exposed. Moreover, for shorter exposure period of 3 hrs exposed, 82% of E. coli removal were detected in 80 mm column for 8 mT and 10 mT magnetic field. These findings indicate that the application of LF-EMF is able to decrease the E. coli, can be and efficient in E. coli growth from river water intake. Thus, the results from this study proved that the utilization of LF-EMF is able to decrease the concentrations of E. coli, and contributes in slowing down their growth. Also, it can be indicated that the LF-EMF kill a part of E. coli exposed in the river water with the large magnetic field and long-time exposure. [ABSTRACT FROM AUTHOR]
- Published
- 2017
- Full Text
- View/download PDF
81. Water Pollution and Riverbank Filtration for Water Supply Along River Nile, Egypt
- Author
-
Shamrukh, Mohamed, Abdel-Wahab, Ahmed, and Shamrukh, Mohamed, editor
- Published
- 2011
- Full Text
- View/download PDF
82. Potential of Riverbank Filtration to Remove Explosive Chemicals
- Author
-
Ray, Chittaranjan, Zheng, Weixi, D’Alessio, Matteo, Lichwa, Joseph, Bartak, Rico, and Shamrukh, Mohamed, editor
- Published
- 2011
- Full Text
- View/download PDF
83. Hydrogeochemical Processes During Riverbank Filtration and Artificial Recharge of Polluted Surface Waters: Zonation, Identification, and Quantification
- Author
-
Stuyfzand, Pieter J. and Shamrukh, Mohamed, editor
- Published
- 2011
- Full Text
- View/download PDF
84. Fluorescent Microspheres as Surrogates in Evaluating the Efficacy of Riverbank Filtration for Removing Cryptosporidium parvum Oocysts and Other Pathogens
- Author
-
Harvey, Ronald, Metge, David, Sheets, Rodney, Jasperse, Jay, and Shamrukh, Mohamed, editor
- Published
- 2011
- Full Text
- View/download PDF
85. A Combined RBF and ASR System for Providing Drinking Water in Water Scarce Areas
- Author
-
Sharma, Laxman, Ray, Chittaranjan, and Shamrukh, Mohamed, editor
- Published
- 2011
- Full Text
- View/download PDF
86. Riverbank Filtration Concepts and Applicability to Desert Environments
- Author
-
Ray, Chittaranjan and Shamrukh, Mohamed, editor
- Published
- 2011
- Full Text
- View/download PDF
87. Riverbank Filtration as an Alternative to Surface Water Abstraction for Safe Drinking Water Supply to the City of Khabarovsk, Russia
- Author
-
Kulakov, V. V., Fisher, N. K., Kondratjeva, L. M., Grischek, T., and Shamrukh, Mohamed, editor
- Published
- 2011
- Full Text
- View/download PDF
88. Quality of Riverbank Filtrated Water on the Base of Poznań City (Poland) Waterworks Experiences
- Author
-
Górski, Józef and Shamrukh, Mohamed, editor
- Published
- 2011
- Full Text
- View/download PDF
89. Removal of Iron and Manganese Within the Aquifer Using Enhanced Riverbank Filtration Technique Under Arid Conditions
- Author
-
Ghodeif, Kamal Ouda and Shamrukh, Mohamed, editor
- Published
- 2011
- Full Text
- View/download PDF
90. Riverbank Filtration as an Alternative Treatment Technology: AbuTieg Case Study, Egypt
- Author
-
Abdalla, Fathy A., Shamrukh, Mohamed, and Shamrukh, Mohamed, editor
- Published
- 2011
- Full Text
- View/download PDF
91. Minimizing Security Risks Beyond the Fence-Line: Design Features of a Tunnel-Connected Riverbank Filtration System
- Author
-
Hubbs, S., Ball, K., Haas, D., and Shamrukh, Mohamed, editor
- Published
- 2011
- Full Text
- View/download PDF
92. The Impact of Clogging Issues at a Riverbank Filtration Site in the Lalin River, NE, China: A Laboratory Column Study
- Author
-
Bin Hu, Linmei Liu, Ruihui Chen, Yi Li, Panwen Li, Haiyang Chen, Gang Liu, and Yanguo Teng
- Subjects
Renewable Energy, Sustainability and the Environment ,Geography, Planning and Development ,Building and Construction ,riverbank filtration ,physical clogging ,chemical clogging ,column experiment ,hydraulic conductivity ,Management, Monitoring, Policy and Law - Abstract
Although riverbank filtration (RBF) has been widely applied in China, the managers do not pay enough attention to the inevitable clogging issues during continuous RBF operation. The RBF site, which is located near the Lalin River, northeastern China, was selected as the study area, and the laboratory column experiments were used to simulate the RBF process and further investigate the physical and chemical clogging. The removal of turbidity (59.4–95.1%), COD (21.9–71.7%), NH4+ (10.9–39.4%), Fe (18.5–64.8%), and Mn (19.8–71.7%) demonstrated the water quality improvement by RBF. Whereas, the significant decrease in permeability (39.6–88.2%) also indicated that the clogging issues could not be ignored during RBF. Among them, the physical clogging-dominated area, chemical clogging-dominated area, and the transition zone were located at 0–12.5%, 37.5–100%, and 12.5–37.5% of the infiltration pathway, respectively. Moreover, the concentration of suspended particle materials, mean size of riverbed sediments, and aquifer media are the major impact factors for physical clogging; the precipitation of soluble constituents and redox reaction and other hydrochemical processes were the major impact factors for chemical clogging. The conclusion of this study can contribute to managers alleviating the clogging issues and improving the effectiveness of the sustainable operation in the local RBF system.
- Published
- 2022
- Full Text
- View/download PDF
93. Managed Aquifer Recharge for Water Resilience.
- Author
-
Dillon, Peter, Dillon, Peter, Fernández Escalante, Enrique, Massmann, Gudrun, and Megdal, Sharon B.
- Subjects
Research & information: general ,ASR ,ATP ,Africa ,FEFLOW ,GIS-MCDA ,Henry's Fork ,IWRM ,Idaho ,India ,LAN (Law of the Nation's Waters) ,MAR ,MATLAB ,Managed Aquifer Recharge ,Managed Aquifer Recharge (MAR) ,Mexico ,Northern Australia ,SAT ,Snake River ,Social Technology ,Spain ,Sweden ,Ulaanbaatar ,Underground Transfer of Floods for Irrigation ,Yellow River Irrigation District ,adaptability zoning evaluation ,adaptation measures ,anthropic forcing ,aquifer storage and recovery (ASR) ,arid ,artificial recharging scenarios ,biofouling ,climate adaptation ,climate change ,contaminants ,contaminants of emerging concern (CECs) ,cost function ,decision support ,decision-support ,developing countries ,drinking water ,drinking water supply ,droughts ,dynamic ,ecosystems ,environment protection ,environmental tracer ,enzymatic activity ,filtration ,fisheries ,floods ,framework ,geochemical analysis ,geographic information science (GISc) ,geographic information systems (GIS) ,governance ,groundwater ,groundwater depletion ,groundwater recharge ,guidelines ,health protection ,indicators ,induced bank filtration (IBF) ,infiltration basin ,infiltration pond ,infiltration rate ,integrated water resource management ,lake bank filtration ,legal ,managed aquifer recharge ,managed aquifer recharge (MAR) ,mapping ,meteorological forcing ,mixing ratios ,multi-criteria decision analysis ,new water challenges ,online flow-cytometry ,organic amendments ,pathogens ,pharmaceuticals in groundwater ,probabilistic ,rainwater harvesting ,recharge performance ,reclaimed water ,recycled water ,recycling ,regulation ,regulatory ,removal of pharmaceuticals ,risk ,risk assessment ,risk management ,riverbank filtration ,safety ,semi-arid ,semiarid ,sensitivity analysis ,soil compaction ,strategic storage ,stream temperature ,streamflow ,suitability map ,suitability mapping ,tillage ,time-varying mixing model ,types of MAR for irrigation ,ultrafiltration ,urban water management ,water banking ,water crisis ,water level monitoring ,water management ,water quality ,water rights ,water security ,water supply security model ,web GIS ,web tools ,well clogging - Abstract
Summary: This book is a hard copy of the editorial and all the papers in a Special Issue of the peer-reviewed open access journal 'Water' on the theme 'Managed Aquifer Recharge for Water Resilience'. Managed aquifer recharge (MAR) is the purposeful recharge of water to aquifers for subsequent recovery or environmental benefit. MAR is increasingly used to make water supplies resilient to drought, climate change and deteriorating water quality, and to protect ecosystems from declining groundwater levels. Global MAR has grown exponentially to 10 cu.km/year and will increase ten-fold within a few decades. Well informed hydrogeologists, engineers and water quality scientists are needed to ensure that this investment is effective in meeting increasingly pressing needs. This compilation contains lessons from many examples of existing projects, including several national and continental summaries. It also addresses the elements essential for identifying and advancing projects such as mapping aquifer suitability and opportunities, policy matters, operational issues, and some innovations in MAR methods and monitoring. This collection exemplifies the state of progress in the science and practice of MAR and is intended to be useful, at least to water managers, water utilities, agricultural water users and urban planners, to facilitate water resilience through new MAR projects.
94. Spatiotemporal analysis of bacterial biomass and activity to understand surface and groundwater interactions in a highly dynamic riverbank filtration system.
- Author
-
van Driezum, Inge H., Chik, Alex H.S., Jakwerth, Stefan, Lindner, Gerhard, Farnleitner, Andreas H., Sommer, Regina, Blaschke, Alfred Paul, and Kirschner, Alexander K.T.
- Subjects
- *
WATER temperature , *FLUORINE compounds , *PHOTOSYNTHESIS , *GROUNDWATER , *AQUIFERS , *WATER filtration - Abstract
Characterization of surface water – groundwater interaction in riverbank filtration (RBF) systems is of decisive importance to drinking water utilities due to the increasing microbial and chemical contamination of surface waters. These interactions are commonly assessed by monitoring changes in chemical water quality, but this might not be indicative for microbial contamination. The hydrological dynamics of the infiltrating river can influence these interactions, but seasonal temperature fluctuations and the supply of oxygen and nutrients from the surface water can also play a role. In order to understand the interaction between surface water and groundwater in a highly dynamic RBF system of a large river, bacterial abundance, biomass and carbon production as well as standard chemical parameters were analyzed during a 20 month period under different hydrological conditions. In the investigated RBF system, groundwater table changes exhibited striking dynamics even though flow velocities were rather low under regular discharge conditions. Bacterial abundance, biomass, and bacterial carbon production decreased significantly from the river towards the drinking water abstraction well. The cell size distribution changed from a higher proportion of large cells in the river, towards a higher proportion of small cells in the groundwater. Although biomass and bacterial abundance were correlated to water temperatures and several other chemical parameters in the river, such correlations were not present in the groundwater. In contrast, the dynamics of the bacterial groundwater community was predominantly governed by the hydrogeological dynamics. Especially during flood events, large riverine bacteria infiltrated further into the aquifer compared to average discharge conditions. With such information at hand, drinking water utilities are able to improve their water abstraction strategies and react quicker to changing hydrological conditions in the RBF system. [ABSTRACT FROM AUTHOR]
- Published
- 2018
- Full Text
- View/download PDF
95. Nitrogen and Organics Removal during Riverbank Filtration along a Reclaimed Water Restored River in Beijing, China.
- Author
-
Weiyan Pan, Quanzhong Huang, and Guanhua Huang
- Abstract
Reclaimed water has been widely used to restore rivers and lakes in water scarce areas as well as in Beijing municipality, China. However, refilling the rivers with reclaimed water may result in groundwater pollution. A three-year field monitoring program was conducted to assess the effect of a riverbank filtration (RBF) system on the removal of nitrogen and organics from the Qingyang River of Beijing, which is replenished with reclaimed water. Water samples from the river, sediment, and groundwater were collected for NO
3 -N, NH4 -N, and chemical oxygen demand (COD) was measured. The results indicate that about 85% of NO3 -N was removed from the riverbed sediments. Approximate 92% of NH4 -N was removed during the infiltration of water from river to aquifer. On average, 54% of COD was removed by RBF. The attenuation of NO3 -N through RBF to the groundwater varied among seasons and was strongly related to water temperature. On the other hand, no obvious temporal variability was identified in the removal of COD. These results suggest that the RBF system is an effective barrier against NO3 -N, NH4 -N and COD in the Qingyang River, as well as those rivers with similar geological and climatic conditions refilled with reclaimed water. [ABSTRACT FROM AUTHOR]- Published
- 2018
- Full Text
- View/download PDF
96. Riverbank Filtration: A Sustainable Process to Attenuate Contaminants during Drinking Water Production.
- Author
-
Kumar, Pradeep, Mehrotra, Indu, Gupta, Ankush, and Kumari, Soma
- Subjects
RIVERBANK filtration ,DRINKING water purification ,CONTAMINATION of drinking water ,WATER pollution ,TURBIDITY ,COLIFORMS - Abstract
Riverbank filtration leads to purification of water. For India it can be a simple, economical and effective alternative. A few unanswered questions were: Can it work in Indian mountainous regions? Will it be of any advantage in the case of some of the polluted Indian surface waters? With the goal to evaluate use of riverbank filtration as a sustainable technology under widely varying conditions prevalent in India, the effectiveness of riverbank filtration has been examined over the last 10 years. In the case of cleaner surface waters, the wells deliver water free of turbidity and coliform even during monsoon irrespective of well configuration. In the case of polluted source waters, it results in an overall advantage in terms of improved raw water quality, reduced degree and cost of subsequent treatment and decreased levels of disinfection by-products. The study shows riverbank filtration to be an effective and sustainable option for plains as well as the mountainous region. [ABSTRACT FROM AUTHOR]
- Published
- 2018
- Full Text
- View/download PDF
97. Site Suitability Analysis for Riverbank Filtration in the Han River, Korea
- Author
-
Lee, Sang Il, Lee, Sang Sin, Zhang, Changkuan, and Tang, Hongwu
- Published
- 2009
- Full Text
- View/download PDF
98. Groundwater flow path determination during riverbank filtration affected by groundwater exploitation: a case study of Liao River, Northeast China.
- Author
-
Su, Xiaosi, Lu, Shuai, Gao, Ruimin, Su, Dong, Yuan, Wenzhen, Dai, Zhenxue, and Papavasilopoulos, Eleftherios N.
- Subjects
- *
GROUNDWATER quality , *RIVERBANK filtration , *HYDROLOGY , *SEDIMENTS - Abstract
The groundwater flow path plays an important role in maintaining hydrological and ecological quality and security, which are important in the comprehensive management and use of both groundwater and surface water. In this study, an integrated multi-tracer-constrained framework was used to determine the groundwater flow path. The results show that there are shallow and deep flow paths in riverbank filtration, controlled by the different permeabilities of riverbed sediments and aquifers at different depths. The contribution of river water to shallow groundwater is less than that to deep groundwater because of the low permeability of the riverbed sediment in the dense muddy layer in the shallow slope of the river valley. This contribution decreases with increasing distance from the Liao River. The shallow groundwater quality is better than the deep groundwater quality because of its longer residence time. [ABSTRACT FROM PUBLISHER]
- Published
- 2017
- Full Text
- View/download PDF
99. The impact of sewage-contaminated river water on groundwater ammonium and arsenic concentrations at a riverbank filtration site in central Delhi, India.
- Author
-
Groeschke, Maike, Frommen, Theresa, Taute, Thomas, and Schneider, Michael
- Subjects
GROUNDWATER pollution ,SEWAGE ,RIVERBANK filtration ,WASTEWATER treatment ,WATER quality - Abstract
Copyright of Hydrogeology Journal is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2017
- Full Text
- View/download PDF
100. Does Pumping Volume Affect the Concentration of Micropollutants in Groundwater Samples?
- Author
-
van Driezum, Inge H., Derx, Julia, Saracevic, Ernis, Kirschner, Alexander K.T., Sommer, Regina, Farnleitner, Andreas H., and Blaschke, Alfred Paul
- Subjects
GROUNDWATER sampling ,GROUNDWATER pollution ,MICROPOLLUTANTS ,RIVERBANK filtration ,PUMPING machinery - Abstract
Information on concentrations of micropollutants (such as pharmaceuticals, pesticides, and industrial chemicals) in most highly dynamic riverbank filtration (RBF) systems is lacking, in contrast to data on standard chemical parameters. Sampling protocols have thus far been based on the stabilization of standard chemical parameters in relatively pristine environments. To determine whether groundwater samples for micropollutant analysis can be taken at a similar pumping volume as samples for testing standard chemical parameters in both environments, three groundwater monitoring wells in an RBF system were sampled at two points in time (after pumping of 3 well volumes and after pumping of 15 well volumes). Micropollutant concentrations were not significantly different between the two sampling points; therefore, appropriate samples can be drawn after pumping 3 well volumes. For a specific microbiological parameter (leucin incorporation), a statistically significant difference was found. [ABSTRACT FROM AUTHOR]
- Published
- 2017
- Full Text
- View/download PDF
Catalog
Discovery Service for Jio Institute Digital Library
For full access to our library's resources, please sign in.