Waste Water Engineering During preliminary treatment of a sewage Girt and sand are removed by girt chambers Floating materials are removed by screening Oil and grease are removed from skimming tanks All listed here Girt and sand are removed by girt chambers Floating materials are removed by screening Oil and grease are removed from skimming tanks All listed here ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering In the activated sludge process Aeration is done with an admixture of previously aerated sludge Water is removed by centrifugal action Sludge is activated by constant stirring Aeration is continued till stability Aeration is done with an admixture of previously aerated sludge Water is removed by centrifugal action Sludge is activated by constant stirring Aeration is continued till stability ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering Hazen’s formula VS = 418 (GS – Gw)d [(3T + 70)/100] is used for the settlement velocity of the particles of diameter Less than 0.1 mm Less than 0.01 mm Less than 0.05 mm Greater than 0.1 mm Less than 0.1 mm Less than 0.01 mm Less than 0.05 mm Greater than 0.1 mm ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering In sewers the effect of scouring is more on Top side Bottom side Horizontal side All sides Top side Bottom side Horizontal side All sides ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The minimum diameter of sewer to be adopted is 15 cm 10 cm 25 cm 12.5 cm 15 cm 10 cm 25 cm 12.5 cm ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering In sewers the highest non-scouring velocity is achieved in Cast iron sewers Stone ware sewers Glazed bricks sewers Cement concrete sewers Cast iron sewers Stone ware sewers Glazed bricks sewers Cement concrete sewers ANSWER DOWNLOAD EXAMIANS APP
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