SELECTION OF SEWAGE TREATMENT TECHNOLOGY FOR DELHI USING MULTI-CRITERIA DECISION-MAKING

Abstract

In India, untreated sewage is the primary polluter of water sources and rivers, resulting in a variety of illnesses, environmental degradation and agricultural pollution. The urban poor often residing near filthy drains and canal suffers due the mismanagement of sewage. The sewage systems in India's metropolitan cities, such as Delhi, are centralized, with underground pipelines, pumping stations, and treatment facilities. While a range of water treatment technologies are available, still the selection of the best technology among all alternative is a difficult job. The past study indicates that few Multi-Criteria Decision-Making (MCDM) method have been used to assess the performance of Sewage Treatment Technology (STT), but the negligence to take account of criteria such as Fecal Coliforms (FC) and other hazardous microorganisms has somewhere affected the reliability of results. This study attempts to help decision maker for selecting most appropriate STT by using Analytical Hierarchical Process (AHP) method of MCDM. Thirteen Sustainable criteria related to Social Acceptability, Suitability for Horticulture and Economical STP1ect were identified and analysed to evaluate the performance of STT. In this study four alternatives, namely STT1, STT2, STT3, STT4 were analysed STT2 with highest priority score (0.30) found to be most sustainable sewage treatment technology.