Design of Sewerage System and Stp for a Proposed Locality in Ratapgarh, Rajasthan

Abstract

The main purpose of this project is to design a new sewerage system of capacity 8 mld sewage treatment plant based on cyclic activated sludge process or SBR technology located in Pratapgarh district (Rajasthan). The Sewage Treatment involves Preliminary, Primary, Secondary, Tertiary and Advanced Treatment include Unit Operations and Unit Processes to remove physical, chemical and biological contaminants. The treated effluent can be discharged into a stream or used in irrigating agricultural farms for growing animal fodder and in landscape irrigation in Pratapgarh. The stabilized sludge can be used as a soil conditioner. Samples are collected regularly at the plant inlet as well as before and after each treatment process. The raw sewage is characterized by high dissolved solids, medium strength BOD, and low COD/BOD ratio, high concentration of chloride, sulphate and sulfide due to septic sewage. These are typical characteristics of the sewage in this region. The plant is designed, operated and maintained so as to ensure safety and reliability in the treated effluent quality. Any overloading of the treatment processes is handled effectively. The reclaimed water quality meets the international standards and guidelines for landscape irrigation and farming.