791Chemical EngineeringMedium
Lagoons used for purification of polluted water________?
AAre large shallow artificial lakes also known as clarification lakes, maturation ponds or
BAll A., B. & C.
CUse micro-organisms/bacteria in presence of dissolved oxygen
DGives an excellent final effluent (with 3 to 4 lagoons arranged in series) having suspended
Correct answer
B. All A., B. & C.
Explanation
The correct answer is All A., B. & C..