Survey Of Water Treatment Plant – YouTube
00:46 The impeller housing for the large influent (raw sewage?) pumps. This facility could service at least 250,000 homes. You're looking at 6-12 million gallons per day of sewage that is NOT being properly treated; a true public health threat. … View Video

Sewage Treatment – Wikipedia, The Free Encyclopedia
Pretreatment removes materials that can be easily collected from the raw sewage before they damage or clog the pumps and sewage lines of primary treatment clarifiers (trash, tree limbs, leaves, branches etc.). A new process called soil bio-technology … Read Article

Delhi – Wikipedia, The Free Encyclopedia
The shortfall is met by private and public tube wells and hand pumps. A large portion of the sewage flows untreated into the Yamuna river. New Delhi houses several government buildings and official residences reminiscent of British colonial architecture, … Read Article

Water Supply And Sanitation In India – Wikipedia, The Free …
A survey of the working conditions of sewage workers in Delhi showed that most of them suffer from chronic diseases, respiratory problems, skin disorders, allergies, Under the new approach communities are being consulted and trained, … Read Article