A shallow pond in which the sewage is retained and biologically treated is called__________________?

Related Mcqs:

Fresh sewage is ______________ in nature?

A. Acidic B. Neutral C. Alkaline D. Highly acidic...

Which of the following plants does not emit appreciable amount of SO2 in atmosphere ?

A. Thermal power plant B. Petroleum refinery C. Nitric acid plant D. Sulphuric acid plant...

Suspended solid present in the waste water generated in blast furnace gas cooling and cleaning plant is removed by__________________?

A. Biological oxygen pond B. Radial settling tank (thickener) using coagulant (lime & ferrous sulphate) C. Lagoons D. Filtration...

80% less than 200 mesh size particles are called____________________?

A. Smoke B. Powder C. Grit D. Aggregates...

The lowest layer of atmosphere is known as the_____________________?

A. Stratosphere B. Troposphere C. Ionosphere D. None of these...