Selection of Sewage Treatment Technology using Analytic Hierarchy Process

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 method have been used to assess the performance of Sewage Treatment Technology, but the negligence to take account of criteria such as Fecal Coliforms and other hazardous microorganisms has somewhere affected the reliability of results. This study attempts to help decision maker for selecting most appropriate Sewage Treatment Technology (STT) by using Analytical Hierarchical Process (AHP) method of Multi Criteria Decision Making (MCDM). Thirteen Sustainable criteria related to social acceptability, suitability for horticulture and economical aspect were identified and analyzed to evaluate the performance of Sewage Treatment Technology (STT). Among all alternatives, namely ASP, MBR, SBR, and UASBIn this study MRB with priority score (0.30) found to be most sustainable sewage treatment technology.