Waste Water Engineering The settlement velocity of a solid (diameter 0.5 mm, specific gravity 1.75) in water having temperature 10°C, is 413.5 cm/sec 500 cm/sec 213.5 cm/sec 313.5 cm/sec 413.5 cm/sec 500 cm/sec 213.5 cm/sec 313.5 cm/sec 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 5 15 20 10 5 15 20 10 ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The normal value of over flow rates for plain primary sedimentation tanks, ranges between 40,000 to 50,000 litres/sqm/day 80,000 to 100,000 litres/sqm/day 25,000 to 35,000 litres/sqm/day 50,000 to 60,000 litres/sqm/day 40,000 to 50,000 litres/sqm/day 80,000 to 100,000 litres/sqm/day 25,000 to 35,000 litres/sqm/day 50,000 to 60,000 litres/sqm/day ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering Skimming tanks are Those from which sludge is skimmed out Used to remove the grease and oil Improved version of grit chambers Tanks provided with self- cleansing screens Those from which sludge is skimmed out Used to remove the grease and oil Improved version of grit chambers Tanks provided with self- cleansing screens ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering Self-cleansing velocity is Velocity at dry weather flow Velocity of water at flushing Velocity at which no accumulation remains in the drains Velocity of water in a pressure filter Velocity at dry weather flow Velocity of water at flushing Velocity at which no accumulation remains in the drains Velocity of water in a pressure filter ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering In trickling filter, B.O.D. is reduced to 80 to 90% 30 to 40% 60 to 80% 40 to 60% 80 to 90% 30 to 40% 60 to 80% 40 to 60% ANSWER DOWNLOAD EXAMIANS APP
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