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Waste Water Engineering

Waste Water Engineering
Fresh sewage is generally

A source of objectionable odour
Highly decomposed
Acidic
Alkaline

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Waste Water Engineering
The non-clog pump which permits solid matter to pass out with the liquid sewage, is

Pneumatic ejector
None of these
Centrifugal pump
Reciprocating pump

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Waste Water Engineering
The discharge per unit plan area of a sedimentation tank, is generally called

Surface loading
Over flow velocity
Over flow rate
All of these

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Waste Water Engineering
During preliminary treatment of a sewage

Girt and sand are removed by girt chambers
All listed here
Oil and grease are removed from skimming tanks
Floating materials are removed by screening

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Waste Water Engineering
The sewage treatment in septic tanks is due to

None of these
Parasitic decomposition
Anaerobic decomposition
Aerobic decomposition

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Waste Water Engineering
pH value of sludge during alkaline regression stage, is

More than 7
Less than 7
Less than 6
More than 6

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