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7. Performance Evaluation of Various Filter Media for Multi-Functional Purposes to Urban Constructed Wetlands.

Author

Vispo, Chiny, Geronimo, Franz Kevin, Jeon, Minsu, and Kim, Lee-Hyung

Abstract

The escalating demand for innovative solutions is driven by the challenges posed by water quality degradation and the pervasive impacts of climate change. As such, this study evaluated the performance of filter media to mitigate these challenges through multi-functional applications in urban constructed wetlands (UCWs). Column testing of organic filter media, including biochar (BC), woodchip (WC), anthracite (AT), and activated carbon (AC), as well as inorganic filter media, such as ceramic balls (CB), basalt (BS), and porous sand (PS), with synthetic stormwater runoff influent was conducted to assess their performance through water quality parameters and Scanning Electron Microscopy with Energy Dispersive X-ray (SEM-EDX) analysis for carbon storage potential. Among the media tested, AC exhibited high pollutant removal efficiencies amounting to 84%, 54%, 56%, and 44% for total suspended solids (TSS), chemical oxygen demand (COD), total nitrogen (TN), and total phosphorus (TP), respectively. For inorganic media, PS had the highest TSS and TN removal, whereas BS exhibited the highest COD and TP removal. Overall performance rating revealed that AC and BS, despite their efficient pollutant removal, are associated with higher costs, resulting in a lower ranking compared to AT and PS. SEM-EDX analysis identified PS and AC as standout media for potential carbon storage, attributed to their extensive surface areas and pore structures providing abundant adsorption sites. The results from this study highlighted the potential applications of various filter media in UCW designs with the aim of achieving carbon neutrality and sustainable urban development. [ABSTRACT FROM AUTHOR]

Published
2024
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28. Formulation of design guidelines for the cost-effectiveness of constructed wetlands in improving water quality

Author

Kim， Lee-Hyung, Park BaeKyung, Choi JiYeon, Franz Kevin F. Geronimo, and Hong JungSun

Subjects
Pollutant, Pollution, geography, geography.geographical_feature_category, Cost effectiveness, media_common.quotation_subject, Wetland, Wastewater, medicine, Environmental science, Water treatment, Water quality, medicine.symptom, Vegetation (pathology), Water resource management, media_common
Published
2018

29. Estimating pollutant mass accumulation on highways during dry periods

Author

Kim, Lee-Hyung, Zoh, Kyung-Duk, Jeong, Sang-man, Kayhanian, Masoud, and Stenstrom, Michael K.

Subjects
Freeways -- Environmental aspects, Runoff -- Measurement, Runoff -- Environmental aspects, Water, Underground -- Environmental aspects, Soil pollution -- Measurement, Engineering and manufacturing industries, Environmental issues
Abstract

For determining the accumulated pollutant mass on highways, two years of monitoring data were used from eight highway sites in southern California. Buildup over antecedent dry days was calculated from mass washed off from the following storm and retained pollutant mass. Mass accumulation rates were determined for total suspended solids (TSS), chemical oxygen demand (COD), oil and grease, total Kjeldahl nitrogen, and total phosphorus, and are reported in g/[m.sup.2]-day. A revised buildup model is proposed using an alternative modeling approach to describe buildup during dry days between storms. The result shows that, between 1 and 10 antecedent dry days, the pollutant mass buildup rates are determined to be 0.544 g/[m.sup.2]-day for TSS, 0.114 g/[m.sup.2]-day for COD, and 0.0113 g/[m.sup.2]-day for oil and grease. Buildup rates decline in subsequent periods rates decreased by 79% for TSS, 78% for COD, and 61% less for oil and grease in the following 10-70 day period. DOI: 10.1061/(ASCE)0733-9372(2006)132:9(985) CE Database subject headings: Stormwater management; Pollutants; Highways: Runoff; California.

Published
2006

42. Wealth Creation Without Pollution - Designing for Industry, Ecobusiness Parks and Industrial Estates

Author

D'Arçy, B., Kim, Lee-Hyung, Maniquiz-Redillas, Marla, D'Arçy, B., Kim, Lee-Hyung, and Maniquiz-Redillas, Marla

Subjects
Water--Pollution--Prevention, Factory and trade waste--Environmental aspects, Factory and trade waste--Environmental aspects--Case studies
Abstract

The development of eco-industrial parks and associated ‘ecological industry'concepts offer progressive integrated approaches to resolve pollution problems from effluents and wastes of all kinds. Most industry however is now located in business parks and industrial estates, with relatively few industries having direct discharges of process effluents to the water environment. But that does not mean no pollution. Many of these estates are very large, with many companies of all kinds spread over extensive areas. All have surface water drainage and stormwater runoff is often contaminated by many diffuse sources.Wealth Creation without Pollution is the culmination of several years of deliberations by academics and regulators, engaging with industrial and commercial sectors to characterise and quantify environmental problems and identify best practice solutions. Equally important have been efforts to explore sufficiently flexible regulatory regimes that offer effective means to prevent pollution and achieve good working environments in which industry and commerce can flourish.This book explores how modern industries are striving towards more sustainable practices, with case studies of impacts and of greener industry practices, as well as philosophical and policy papers. The role of regulators, planners and government in fostering a greener industrial base is also examined.Wealth Creation without Pollution is a valuable text book for environmental science and engineering students, and a useful resource for industrial architects, developers and practitioners.

Published
2018

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