Waste Water Engineering
Rate of flow of sewage is generally assumed

Equal to the rate of water supply
Less than the rate of water supply
More than the rate of water supply
At 150 litres per capita

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Waste Water Engineering
Traps

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

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