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Waste Water Engineering

Waste Water Engineering
Imhoff cone is used to measure

Total organic solids
Settleable solids
Total in organic solids
Total solids

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Waste Water Engineering
If D.O. concentration falls down to zero in any natural drainage, it indicates the zone of

Active decomposition
Cleaner water
Recovery
Degradation

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Waste Water Engineering
The algae dies out in the zone of

Cleaner water
Recovery
Active decomposition
Degradation

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Waste Water Engineering
The digested sludge from septic tanks, is removed after a maximum period of

5 years
4 years
3 years
3.5 years

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Waste Water Engineering
The formula which accepts the value of rugosity coefficient n = 0.012 to be used in Manning’s formula, is given by

Bazin
William-Hazen
Crimp and Bruges
Kutter

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Waste Water Engineering
The gradient of sewers depends upon

Diameter of the sewer
Discharge
All listed here
Velocity of flow

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