Impact of sewage treatment plant effluent on water quality of Dal Lake, Kashmir, India

Abstract

Present paper attempts to study and discuss the impacts of sewage treatment plant effluent on water quality of a typical urban Dal Lake situated in Jammu & Kashmir. Using Correlation analysis and Principal component analysis changes in water quality were analysed. The result showed that Fluidised Aerobic Bed reactor (FAB) based STP was malfunctioning and resulted in increasing the concentration of electrical conductivity, othro-phosphate, nitrate-nitrogen and nitrate-nitrogen at influx of sewage into the lake. This has resulted in bifurcating the lake into two distinct zones, one being polluted and other being unpolluted. The main reason being the release of partially treated effluents directly into the lake.