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 250 mg/l 50 mg/l 150 mg/l 100 mg/l 250 mg/l 50 mg/l 150 mg/l ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering Which of the following pumps in used to pump sewage solids with liquid sewage without clogging the pump is? Pneumatic ejector None of these Reciprocating pump Centrifugal pump Pneumatic ejector None of these Reciprocating pump Centrifugal pump ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering In a city the ratio of the drainage to sewage is 20, the percentage discharge passing through non-monsoon periods, is 20 10 15 5 20 10 15 5 ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering Removal of oil and grease from sewage, is known Skimming None of these Filtration Screening Skimming None of these Filtration Screening ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The porosity of sediments in sewer pipes, is usually taken as 0.012 0.011 0.013 0.01 0.012 0.011 0.013 0.01 ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The normal values of over flow rates for secondary sedimentation tanks, ranges between 80,000 to 10,000 litres/sqm/day 50,000 to 60,000 litres/sqm/day 25,000 to 35,000 litres/sqm/day 40,000 to 50,000 litres/sqm/day 80,000 to 10,000 litres/sqm/day 50,000 to 60,000 litres/sqm/day 25,000 to 35,000 litres/sqm/day 40,000 to 50,000 litres/sqm/day ANSWER DOWNLOAD EXAMIANS APP
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