The maximum efficiency of BOD removal is achieved in______________?
B. oxidation ditch(Correct)
C. aerated lagoons
D. trickling filters
B. oxidation ditch(Correct)
C. aerated lagoons
D. trickling filters
B. oxidation ditch(Correct)
C. aerated lagoons
D. trickling filters
Similar Posts
In large thermal power stations very fine particulates present in flue gas are removed by
Question: In large thermal power stations very fine particulates present in flue gas are removed by
[A].wet scrubber [B].
bag filter [C].
electrostatic precipitators [D].
dust catcher Answer: Option C
Explanation:
No answer description available for this question.
Which of the following radioactive wastes emits all α, β & γ rays and hence is the most hazardous of all radioactive emitters?
Question: Which of the following radioactive wastes emits all α, β & γ rays and hence is the most hazardous of all radioactive emitters?
[A].I-131 [B].
Sr-90 [C].
Au-198 [D].
Ra-226 Answer: Option D
Explanation:
No answer description available for this question.
The biological decomposition of organic substances in wastes controlled conditions is called
Question: The biological decomposition of organic substances in wastes controlled conditions is called
[A].incineration [B].
biological oxidation [C].
composting [D].
none of these Answer: Option C
Explanation:
No answer description available for this question.
The ratio of 5 day BOD to ultimate BOD is about_______________?
The ratio of 5 day BOD to ultimate BOD is about_______________?A. 1/3
B. 2/3
C. 3/4
D. 1.0Generally the detention period for grit chambers is kept as_______________?
Generally the detention period for grit chambers is kept as_______________?A. 1 minute
B. 5 minutes
C. 2-4 hours
D. 12 hoursA pipe which is installed in the house drainage to preserve the water seal of traps is called______________?
A pipe which is installed in the house drainage to preserve the water seal of traps is called______________?A. vent pipe
B. antisiphonage pipe
C. waste pipe
D. soil pipe