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Waste Water Engineering

Waste Water Engineering
Chlorination of water is done for the removal of

Bacterias
Hardness
Suspended solids
Sediments

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Waste Water Engineering
The normal values of over flow rates for secondary sedimentation tanks, ranges between

80,000 to 10,000 litres/sqm/day
40,000 to 50,000 litres/sqm/day
25,000 to 35,000 litres/sqm/day
50,000 to 60,000 litres/sqm/day

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Waste Water Engineering
The average temperature of sewage in India, is

15°C
25°C
20°C
10°C

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Waste Water Engineering
The gradient of sewers depends upon

All listed here
Discharge
Diameter of the sewer
Velocity of flow

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Waste Water Engineering
The settlement of a particle in sedimentation tank, is affected by

Size and shape of solid
All listed here
Viscosity of water
Velocity of flow

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Waste Water Engineering
The temperature affects the

Solubility of gases in sewage
Biological activity of bacteria in sewage
All of these
Viscosity of sewage

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MORE MCQ ON Waste Water Engineering

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