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Waste Water Engineering

Waste Water Engineering
In a sludge tank, the gas mainly produced, is

Carbon dioxide
Hydrogen
Oxygen
Nitrogen

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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
1 hour and 30 minutes
2 hours
30 minutes

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Waste Water Engineering
A rain sanitary sewer is constructed to carry

Sanitary sewage
Storm sewage
Ground water
Surface water

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Waste Water Engineering
A nuisance is experienced in diluting water if dilution factor is less than

20
100
40
60

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Waste Water Engineering
The most effective arrangement for diverting excess storm water into a natural drainage, is

Overflow weir
None of these
Siphon spill way
Leaping weir

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Waste Water Engineering
Which of the following pumps in used to pump sewage solids with liquid sewage without clogging the pump is?

Centrifugal pump
Pneumatic ejector
Reciprocating pump
None of these

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