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Waste Water Engineering

Waste Water Engineering
Dried sewage after treatment is used as

Chemical for lowering B.O.D.
Fertilizer
Building material
Base material for paints

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Waste Water Engineering
In a grit chamber of a sewage treatment plant,

Flow velocity 0.15 m to 0.3 m/sec is kept
One minute of detention period is kept
Depth of 0.9 m to 1.20 m is kept
All of these

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Waste Water Engineering
Aerobic activity is maximum

In freshly produced sewage
In sewer treatment plants
None of these
At sewer pipes

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Waste Water Engineering
The minimum diameter of a sewer is kept

20 cm
25 cm
10 cm
15 cm

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Waste Water Engineering
The rational formula for peak drainage discharge, was evolved by

All of these
Kuichling
Fruhling
Lloyd David

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Waste Water Engineering
The arrangement made for passing the sewer line below an obstruction below the hydraulic gradient lines called

Sag pipe
all of these
Inverted syphon
Depressed sewer

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