Waste Water Engineering In the activated sludge process 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 Aeration is done with an admixture of previously aerated sludge Water is removed by centrifugal action ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering Inter-distance between ventilation columns in a sewer line is kept 50 m to 100 m 150 m to 300 m 100 m to 150 m 25 to 50 m 50 m to 100 m 150 m to 300 m 100 m to 150 m 25 to 50 m ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering Which one of the following resists hydrogen sulphide corrosion? Glazed ware Glazed stone wares Asbestos cement R.C.C. Glazed ware Glazed stone wares Asbestos cement R.C.C. ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering If the grit in grit chambers is 4.5 million litres per day, its cleaning is done Mechanically Manually Electrically Hydraulically Mechanically Manually Electrically Hydraulically 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 200 ppm 250 ppm 225 ppm None of these 200 ppm 250 ppm 225 ppm ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The sewer which received discharge from two or more main sewers, is known as A main sewer An intercepting sewer A trunk sewer An outfall sewer A main sewer An intercepting sewer A trunk sewer An outfall sewer ANSWER DOWNLOAD EXAMIANS APP
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