________ is a method where water is used as a medium for the flow of sewage from its production of the treatment unit.
(a) Conservancy system
(b) Biological digestion
(c) Incernation
(d) Water carriage system
The question was posed to me in an interview.
My question is based upon Conservancy System in division Water Supply for Building, Collection and Conveyance of Sewage, Waste Water Flow Rate of Environmental Engineering