Biology, asked by anupama76, 1 year ago

the sewage collected from ur house.How is the process later?

Answers

Answered by vasanthij97

2

Primary treatment consists of temporarily holding the sewage in a quiescent basin where heavy solids can settle to the bottom while oil, grease and lighter solids float to the surface. The settled and floating materials are removed and the remaining liquid may be discharged or subjected to secondary treatment.

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