Search

The research evaluated a biofilter to scale laboratory for the treatment of the effluent from the WWTP of Inpec from Yopal, Casanare, whose purpose was to achieve an effluent of optimum quality for agricultural irrigation water reuse. Three phases were watched, the first characterization and analysis of the microbiological parameters as physicochemical effluent. The second phase design and construction of the system to scale laboratory of the artificial wetland, was built in glass, using rice husks, interspersed with gravel, was sown grass vetiver (C. zizanioides) and flooded the system so that it will work with subsurface flow, hydraulic retention time TRH was 3.4 days. Disinfection with chlorine was designed from a test of chlorine demand. The third phase consisted in the operation of the continuous flow system, monitoring was carried out through 4 samplings often weekly, in two of these surveys included measurement of BOD5, total and faecal coliforms and conductivity. The results showed that the husk of rice as a substrate works well, the plants grew permanently, helping to reduce organic loads. Conclusion quinine can be a substitute all or part of other substrates to biofilters or subsurface flow wetlands, being less costly and be available especially in the region of the Orinoco. However, its use must be complemented with a process of reoxygenation of water, since its anaerobic condition is a negative aspect to the receiving water bodies of dumping. [ABSTRACT FROM AUTHOR]

The activities of phytoremediation through artificial wetlands, contribute to the purification of wastewater through biological processes and physical. In the Reserve The Malmo (Tunja, Boyacá, Colombia) there is a trapping mechanism to provide domestic wastewater veredales. Waste water are discharged into the ecosystem without prior treatment, which makes it necessary to search for alternatives to mitigate the impact of discharges. In this research, implements a artificial wetland of flow subsurface with the use of Cyperus papyrus and Schoenoplectus californicus for the treatment of domestic wastewater. With this alternative leads to a reduction of total and faecal coliforms of 98.5% and 88 % respectively. Likewise, the BOD5 and COD had removals of 27.4% and 25.2%. The dissolved oxygen decreased, as did the atmosphere grew slightly acidic and anaerobic. The perception of the inhabitants of the area was positive and they are considered to be able to replicate the method to improve the characteristics of the design. [ABSTRACT FROM AUTHOR]