Comparative performance evaluation of wastewater treatment systems for reuse in irrigation
2010
Jilani, S. (Textile Inst. of Pakistan, Karachi (Pakistan). Dept. of Science) | Khan, M.A. (Karachi Univ. (Pakistan). Inst. of Environmental Studies)
In this study a comparative performance evaluation of existing wastewater treatment systems available in the Karachi city was carried out. The three options available are trickling filter, aerated lagoon and oxidation pond. The physical, chemical and biological parameters (SS, BOD5, COD, ammonia nitrogen, phosphorous and fecal coliform) in the influent and effluent samples of each system were measured on weekly basis over a period of twelve months. Additionally, effects of temperature on different pollutants removal in oxidation pond were also studied. The result of sewage influent indicates that it is fairly strong and concentrated. However, the overall performance of oxidation pond has an edge over the other two systems on the basis of effluent quality, economics, operational and maintenance considerations. In view of the high fecal coliform count, chlorine treatment for disinfection would be mandatory.
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Эту запись предоставил National Agricultural Research Centre