Q150
Activated sludge contains
A.
3 - 6% N, 2% P2O5 and 2.5% K2O
B.
3 - 6% N, 2% P2O5 and 1.0% K2O
AnswerC.
8 - 10% N, 2% P2O5 and 1.5% K2O
D.
4 - 6% N, 2% P2O5 and 2.5% K2O
Answer: Option B
Solution
Answer: Option B
Solution:
Activated sludge contains 3 - 6% N, 2% P2O5 and 1.0% K2O.The activated sludge process is a type of biological wastewater treatment process for treating sewage or industrial wastewater using aeration and a biological floc composed of bacteria and protozoa.
It uses air (or oxygen) and microorganisms to biologically oxidize organic pollutants, producing a waste sludge (or floc) containing the oxidized material.