DESIGN OF SEWAGE TREATMENT SYSTEM FOR PUTTAPARTHY URBAN DEVELOPMENT AUTHORITY AND ALTERNATE USAGE OF TREATED WASTEWATER FOR SEWAGE FARMING

摘要

The primary objective of this study is to design a sewage treatment system for PUDA (Puttaparthy Urban Development Authority) in A.P and usage of treated wastewater for irrigation. The treatability studies help us to design further treatment prior to disposal or reuse. The study area, Puttaparthy, being a pilgrim centre, attracts people all over the world. In the present study, design of the various sewage treatment units like screens, grit chambers, primary settling tanks, trickling filters, secondary settling tanks, sludge digestion tanks and sludge drying beds were carried out for the estimated peak population. Puttaparthy and its surrounding areas come under drought prone areas of Anantapur district. Hence, the treated wastewater of PUDA can be used effectively for raising some suitable crops in that area. The National Water Policy of India also emphasizes the need for recycling and reuse of wastewater. Earlier studies on sewage fanning reveal that disposal of sewage effluent by applying on land increases crop yield by 33%. as sewage contains a lot of fertilizing minerals. Since the quantity of effluent from PUDA is considerably high, usage of treated sewage for irrigation is a good alternative.