Activated sludge contains
A. 3 - 6% N, 2% P2O5 and 2.5% K2O
B. 3 - 6% N, 2% P2O5 and 1.0% K2O
C. 8 - 10% N, 2% P2O5 and 1.5% K2O
D. 4 - 6% N, 2% P2O5 and 2.5% K2O
Answer: Option B
Solution (By Examveda Team)
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.
This Question Belongs to Agriculture >> Plant Pathology
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