In biological treatment, when the BOD of sewage is reduced significantly, the effluent is then passes into

When BOD of sewage is reduced significantly the effluent is passed into a ..........

In oxidation pond , once BOD from the sewage is reduced significantly, the 'flocs' are allowed to sediment and it is known as :

In oxidation pond , once BOD from the sewage is reduced significantly, the 'flocs' are allowed to sediment and it is known as :

In the biological treatment for sewage , microbes are used for the reduction of the organic matter in the sewage water which are held together by fungal filament to form mesh like structures . These are called as :

In the biological treatment for sewage , microbes are used for the reduction of the organic matter in the sewage water which are held together by fungal filament to form mesh like structures . These are called as :

Once BOD from the sewage is reduced significantly, the 'flocs' are allowed to sediment and it is known as ........

When huge amount of sewage is dumped into a river , the BOD will: