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This question belongs to Agriculture Plant Pathology

Plant Pathology

?

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 & Solution

Correct Answer: Option B

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.

Question posted by Examveda

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