Performance of sewage treatment plants - Coliform reduction - Control of urban pollution series - CPCB (2008)

This report presents the findings of a study conducted by CPCB with the help of Indian Institute of Technology, Roorkee and Anna University, Chennai  on the performance of all the prevailing treatment technologies in terms of Coliform reduction. IIT Roorkee had also carried out experiments on measures for further reduction in Coliform level after the conventional treatment. The two Institutes also compiled the information from the world literature on global technological options for Coliform reduction in sewage. The results of these studies are presented in this report.

The methodology followed included the following:

• Literature review including status of water resources, parameters for assessing microbiological quality, effects of microbial pollutants, impact of wastewater treatment processes
• Assessment of performance of sewage treatment plants
• Evolving standards for treated urban wastewater and strategies to improve microbiological quality of water.