Waste Water Engineering In a grit chamber of a sewage treatment plant, One minute of detention period is kept Flow velocity 0.15 m to 0.3 m/sec is kept Depth of 0.9 m to 1.20 m is kept All of these One minute of detention period is kept Flow velocity 0.15 m to 0.3 m/sec is kept Depth of 0.9 m to 1.20 m is kept All of these ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering Removal of oil and grease from sewage, is known Skimming Filtration None of these Screening Skimming Filtration None of these Screening ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering If the depletion of oxygen is found to be 2.5 mg/litre after incubating 2.5 ml of sewage diluted to 250 ml for 5 days at 20°C, B.O.D. of the sewage is 100 mg/l 150 mg/l 50 mg/l 250 mg/l 100 mg/l 150 mg/l 50 mg/l 250 mg/l ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering Skimming tanks are Used to remove the grease and oil Those from which sludge is skimmed out Improved version of grit chambers Tanks provided with self- cleansing screens Used to remove the grease and oil Those from which sludge is skimmed out Improved version of grit chambers Tanks provided with self- cleansing screens ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The recommended detention period for grit chambers is 3 minutes 2 minutes 1 minute 5 minutes 3 minutes 2 minutes 1 minute 5 minutes ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering If is the rugosity coefficient, is the bed slope of sewer, the velocity of flow in m/sec may be obtained by the formula V = (1/n) r2/3 s1/2 evolved by Bazin Kutter Chezy Manning Bazin Kutter Chezy Manning ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS