Question

how can the sewage water be treated, before mixing with water bodies?​

Answer 1

Answer:

Process steps

Process stepsPrimary 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. ...

Process stepsPrimary 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. ... Secondary treatment removes dissolved and suspended biological matter.

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Answer 2

Answer:

Most wastewater undergoes secondary treatment as well as primary treatment. The most common method is to sprinkle or trickle the water over a bed of sand or gravel. As the water filters downward, it is put into contact with oxygen and microorganisms, which work together to break down the organic matter in the water.Sewage treatment is done in three stages: primary, secondary and tertiary treatment