Waste Water Engineering
The density of population over 40 hectares is 250/hectare. If water supply demand per day is 200 litres and sewage discharge is 80% of water supply, the sewage flow in sewers of separate system, is

0.0556 cumec
0.05554 cumec
0.05552 cumec
0.05556 cumec

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Waste Water Engineering
In case of sewer lines

Obstruction test is carried out with the help of smooth ball of diameter 13 mm
Water test is carried out to check water tightness of the joints
Test for straightness is carried out with the help of a lamp and mirror
All listed here

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Waste Water Engineering
Traps

Are water seals which prevent the entry of foul gases
Create symphonic action to increase the quick disposal of sewerage
Dissolve the foul gases
Are used to trap the rats entering sewers

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