Selection of Appropriate Sewage Treatment Technology for Kancheepuram City
Various types of sewage treatment technologies are available for the treatment and reuse of sewage in India. It is difficult to select an appropriate treatment technology for the specific region such as rural, urban or metropolitan area. Suitability to techno economic analysis, life cycle, cost analysis, and benefit cost ratio can be used as financial management tool to take final decision. This paper highlights the application of techno-economic analysis for the selection of appropriate technology of sewage treatment for Kancheepuram town of Tamil Nadu. Out of five different types of sewage treatment technologies that are being used in India, the waste stabilization pond has been found to be the most economical option to treat sewage as the cost of land in Kancheepuram city is less than Rs. 6.5 million per ha (i.e., Rs. 650/sqm). Between Rs. 6.5 and Rs. 13.0 million per ha, the Upflow Anaerobic Sludge Blanket (UASB) with Final Polishing Pond (FPP) is economical. Above Rs. 13.0 million per ha, the Moving Bed Biological Reactor (MBBR), Sequencing Batch Reactor (SBR) and Activated Sludge Process are found to be economical. The selection of technology has been done by calculating the benefit cost ratio, assuming a discount rate of 10%.
Alternate Hydro Energy Centre (AHEC) (2006). Detailed Project Report on Scheme for Integrated Sewerage and Solid Waste Management for Abatement of Pollution of rivers Kuakhai & Daya at Bhubaneshvar. Alternate Hydro Energy Centre, Indian Institute of Technology, Roorkee, India.
Arceivala, S.J. and S.R. Asolekar (2007). Wastewater Treatment for Pollution Control and Reuse. Tata McGraw-Hill, New Delhi.
Chagnon, F. (2002). An introduction to chemically enhanced primary treatment. Massachusetts Institute of Technology, Cambridge.
Friedler, E. and E. Pisanty (2006). Effects of design flow and treatment level on construction and operation costs of municipal wastewater treatment plants and their implications on policy making. Water Research, 40: 3751-3758.
Green, F.B., Bernstone, L., Lundquist, T.J., Muir, J., Tresan, R.B. and W.J. Oswald (1995). Methane fermentation, submerged gas collection, and the fate of carbon in advanced integrated wastewater pond systems. Water Science and Technology, 31(12): 55-65.
Hernandez-Sancho, F. and R. Sala-Garrido (2006). Economic and Technical efficiency of wastewater plants; A basic requisite to the feasibility of water reuse projects. Integrated Urban Water Resources Management, 219-230.
Li Xian-wen (1995). Technical Economic Analysis of Stabilization Ponds. Water Science and Technology, 31(2): 103-110.
Mara, D.D. (1997). Design manual for waste stabilization ponds in India. Logoon Technology International, Leeds.
Merz, S.K. (2000). Guidelines for using free water surface constructed wetlands to treat municipal sewage. Deptt. of Natural Sources, Govt. of Queensland, Brisbane.
Metcalf and Eddy (2003). Wastewater Engineering: Treatment and Reuse, 4th Edition. McGraw-Hill, New York, pp. 1848.
Metcalf and Eddy (2007). Wastewater Engineering Treatment and Reuse. Tata McGraw-Hill, New Delhi.
National River Conservation Directorate (NRCD) (2002). Revised Guidelines for preparation of DPRs for Conservation of Rivers and Lakes. MoEF, GOI, New Delhi.
NRCD (1997). Design Manual for Waste Stabilization Ponds in India. NRCD MoEF, GOI, India.
Qasim, S.R. (1999). Wastewater Treatment Plants Planning, Design, and Operation. CRC Press, Washington.
Shahalam, A.B.M. (1982). An optimal approach for the selection of appropriate sanitation Technology for developing countries. First International Symposium on Environmental Technology for developing countries held in July 7-14, Turkey.
Srinivasan, S.V., Ravindranath, E. and S. Rajamani (1995). Life Cycle Considerations for selection of Wastewater Treatment Alternatives. Department of Environmental Technology, Central Leather Research Institute, Adyar, Chennai, India.
Tassou, S.A. (1988). Energy Conservation & resource utilization in waste-water treatment plants. Applied Energy, 30(2).
Tsagarakis, K.P., Mara, D.D. and A.N. Angelakis (2003). Application of cost criteria for selection of municipal treatment systems. Water, Air and Soil Pollution, 142: 187-210.