The key substance between primary and seconda | vedclass

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(A) In a Sewage Treatment Plant $(STP)$, the primary treatment involves the physical removal of particles through filtration and sedimentation.The sed

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Effluent

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(A) In a Sewage Treatment Plant $(STP)$, the primary treatment involves the physical removal of particles through filtration and sedimentation.The sediment that settles at the bottom during this process is known as primary sludge.The supernatant liquid that remains above the primary sludge is called the primary effluent.This primary effluent is then taken for secondary treatment (biological treatment), where it is passed into large aeration tanks.Therefore, the primary effluent is the key substance that acts as the link between primary and secondary treatment.

The key substance between primary and secondary treatment in Sewage Treatment Plants $(STP)$ is?

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