Waste Water Engineering In the activated sludge process Aeration is done with an admixture of previously aerated sludge Aeration is continued till stability Water is removed by centrifugal action Sludge is activated by constant stirring Aeration is done with an admixture of previously aerated sludge Aeration is continued till stability Water is removed by centrifugal action Sludge is activated by constant stirring ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering At the junction of sewers Tops of both the sewers are at the same level None of these Top of smaller sewer is kept lower Top of larger sewer is kept lower Tops of both the sewers are at the same level None of these Top of smaller sewer is kept lower Top of larger sewer is kept lower ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The first stage of neutral process of sludge digestion, is None of these Alkaline fermentation Acid regression Acid fermentation None of these Alkaline fermentation Acid regression Acid fermentation ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The discharge per unit plan area of a sedimentation tank, is generally called Over flow rate All of these Surface loading Over flow velocity Over flow rate All of these Surface loading Over flow velocity ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The most widely used pump for lifting sewage is Air pressure pump Pneumatic ejector Centrifugal pump Reciprocating pump Air pressure pump Pneumatic ejector Centrifugal pump Reciprocating pump ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering If 2% solution of a sewage sample is incubated for 5 days at 20°C and depletion of oxygen was found to be 5 ppm, B.O.D. of the sewage is None of these 250 ppm 225 ppm 200 ppm None of these 250 ppm 225 ppm 200 ppm ANSWER DOWNLOAD EXAMIANS APP
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