Q
Lagoons used for purification of polluted water_______________?
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A
A. Are large shallow artificial lakes also known as clarification lakes, maturation ponds or
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B
OxiDation ponds
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C
B. Use micro-organisms/bacteria in presence of dissolved oxygen
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D
C. Gives an excellent final effluent (with 3 to 4 lagoons arranged in series) having suspended
Correct Answer:
D. C. Gives an excellent final effluent (with 3 to 4 lagoons arranged in series) having suspended
