MULTI-STOREY DECENTRALIZED WASTE WATER TREATMENT PLANT

Abstract

Rapid urbanization and increased land value led to extra burden on our treatment processes and required a lot of space due to advancement in waste water from community and surrounding vicinity. This accomplishment of goal to treat all raw sludge leads to requirement of lot of land but due to limitation of the land it would not be feasible. Hence to promote the efficiency in work and for the reduction of spaces it is required to have multi-storey decentralized facilities which is taken into consideration in this dissertation work. This effort started with the building of a primary sedimentation tank, followed by two-storey final sedimentation tanks, aeration tanks vertically combined with final settling tanks. One of the features of the multi-storey sewage treatment facilities is the use of outlet pipes for purified wastewater in the final settling tanks. Based on the data of Delhi population, capacity of exiting STPs need to be advanced and upgraded for no waste to be infested in any water body untreated directly. But for building STPSs more capacity land acquisition and additional cost would be required. It can be reduced up to a significant point by using multi-storey decentralized waste water treatment plant which saves area required for conventional waste water treatment plant. Based on this study, it is estimated that Total area covered by the conventional treatment plant with sequencing batch reactor (SBR) and activated sludge process (ASP) is compared to multistorey decentralized plant SBR and ASP. This comparison results in reduction in SBR and ASP BY 57% and 24 % respectively for multi-storey decentralized WWTP. Multi-storey structure area coverage depends upon the technology used in treatment equipments and processes involved. Construction cost for single and multi-storey structures is almost equal. After analyzing the data collected from different sources as CPCB,DJB etc., it has come into appears that multi-storey decentralized waste water treatment will be beneficial . This study provides a set of framework and approaches to use new technology for wastewater treatment. In order to examine impact estimation, it is necessary to have knowledge about various parameters that influence the requirement, approach and process of assessment