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Waste Water Engineering

Waste Water Engineering
For drainage pipes in buildings the test applied before putting them to use, is

Straightness test
Smoke test
Water test
All listed here

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Waste Water Engineering
The settling velocity of the particles larger than 0.06 mm in a settling tank of depth 2.4 is 0.33 m per sec. The detention period recommended for the tank, is

1 hour and 30 minutes
30 minutes
1 hour
2 hours

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Waste Water Engineering
In sewers the effect of scouring is more on

Horizontal side
Top side
Bottom side
All sides

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Waste Water Engineering
It is customary to design a sewer for D.W.F. on the basis of

Twice the average demand
Four times the average demand
Average demand
Thrice the average demand

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Waste Water Engineering
Setting out the alignments of sewers may start from

Any point
City
Tail end
Out-fall

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Waste Water Engineering
The sewage treatment units in which anaerobic decomposition of organic matter is used, are called

Sludge sedimentation tanks
Imhoff tanks
None of these
Trickling filters

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