what is primary sludgh explain how airtel street
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Treatment of sewage includes two stages − primary treatment and secondary treatment. Primary Treatment − Involves physical removal of particles by filtration and sedimentation Initially, sequential filtration is used to remove floating debris.Then, grit (soil + small pebbles) are removed by sedimentation. Solids that settle down form the sludge is known as primary sludge while the supernatant forms the effluent.
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Treatment of sewage includes two stages − primary treatment and secondary treatment. Primary Treatment − Involves physical removal of particles by filtration and sedimentation Initially, sequential filtration is used to remove floating debris.Then, grit (soil + small pebbles) are removed by sedimentation. Solids that settle down form the sludge is known as primary sludge while the supernatant forms the effluent.
The second part of the question appears to be incomplete.
Hope this information will clear your doubts about topic.
If you have any more doubts just ask here on the forum and our experts will try to help you out as soon as possible.
Regards