A study on Sewage Treatment and Disposal in Delhi

Abstract

Delhi, which is the capital of India and also the fastest growing metropolitan city, does not have adequate sewage treatment and disposal infrastructure. In most of the cases wastewater is let out untreated and it either seeps into the ground as a potential pollutant of groundwater or is discharged into the natural drainage system causing pollution in downstream areas. Wastewater needs to be conveyed to sewage treatment plants for treatment and treated sewage must meet the aesthetic standards of ambient environment for receiving water bodies. This paper gives an overview on sewage treatment plants (STPs) in Delhi, focusing majorly on the Okhla wastewater plants. The total treatment capacity of STPs in Delhi, was mapped against the total sewage generation and hence the gap between the two was found. This information will be very useful for further allocation of STPs and also for safeguarding the health of people and Environment