In the concept of self purification of natural streams, complete the following phrase. Solution to pollution is _____

What does SWOT stand for?

Which of the following do not involve mass transfer in terms of water treatment?

In water treatment what is the driving force due to which mass transfer occurs?

Dilution factor is the reciprocal of dilution.

The quality of the fish habitat begins to increase when the dissolved oxygen concentration drops below 4 or 5 mg L-1.

Which type of treatment methods are used for municipal and industrial wastewaters?

_________ is accomplished by the replenishment of oxygen lost to bacterial degradation of organic waste.