From the World Health Organization, World Public Health and Pollution Control point of view, It is important that the sewage, before its ultimate disposal either on land or dilution in water, should be given...

It is due to the presence in sewage of bacterias and other micro-organisms ( algae, fungi, protozoa, etc. The former are much more active. Bacteria are present in vast number in sewage. Each liter of sewage...

It indicates the state of sewage decomposition, its strength and type of treatment needed. Fresh sewage is little alkaline, but stale sewage is acidic in nature. Sewage water contains 0.08 to 0.1 %  of...

Fresh sewage is odorless and has an earthy or Grey color. in Three to Four hours it becomes stale, when all the oxygen present in it has been particularly exhausted. It then starts emitting unpleasant...

Sewage Treatment...