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Waste Water Engineering

Waste Water Engineering
Before discharging the foul sewage into rivers, it is generally treated by

Sedimentation
Oxidation
Screening
All listed here

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Waste Water Engineering
The porosity of sediments in sewer pipes, is usually taken as

0.013
0.012
0.011
0.01

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Waste Water Engineering
An inverted siphon is designed generally for

Four pipes
Two pipes
One pipe
Three pipes

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Waste Water Engineering
Are available in size Stoneware sewers

All of these
15 cm
10 cm
20 cm

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Waste Water Engineering
In very first stage of decomposition of the organic matter in sewage

Nitrates are formed
Ammonia is formed
Carbondioxide is formed
Nitrites are formed

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Waste Water Engineering
The sewage discharge in a detritus tank of a treatment plant is 576 litres/sec with flow velocity of 0.2 m/sec. If the ratio of width to depth is 2, the depth is

120 cm
100 cm
110 cm
150 cm

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