Waste Water Engineering Which one of the following statements regarding septic tanks is wrong? The outlet invert level is kept 5 to 7.5 cm below the inlet invert level A gap of 7.5 cm between the bottom of the covering slab and the top level of scum is provided The minimum width of septic level is 90 cm The depth of tank is kept equal to its width The outlet invert level is kept 5 to 7.5 cm below the inlet invert level A gap of 7.5 cm between the bottom of the covering slab and the top level of scum is provided The minimum width of septic level is 90 cm The depth of tank is kept equal to its width 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 10 20 15 5 10 20 15 5 ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering In olden days the type of section adopted in trunk and out fall sewers was Egg shaped Horse shoe shaped Circular shaped Parabolic shaped Egg shaped Horse shoe shaped Circular shaped Parabolic shaped ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering To prevent settling down of sewage both at the bottom and on the sides of a large sewer, self-cleaning velocity recommended for Indian conditions, is 0.70 m/sec 0.75 m/sec 0.60 m/sec 0.50 m/sec 0.70 m/sec 0.75 m/sec 0.60 m/sec 0.50 m/sec ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The normal value of over flow rates for plain primary sedimentation tanks, ranges between 80,000 to 100,000 litres/sqm/day 25,000 to 35,000 litres/sqm/day 40,000 to 50,000 litres/sqm/day 50,000 to 60,000 litres/sqm/day 80,000 to 100,000 litres/sqm/day 25,000 to 35,000 litres/sqm/day 40,000 to 50,000 litres/sqm/day 50,000 to 60,000 litres/sqm/day ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering Dried sewage after treatment is used as Building material Fertilizer Base material for paints Chemical for lowering B.O.D. Building material Fertilizer Base material for paints Chemical for lowering B.O.D. ANSWER DOWNLOAD EXAMIANS APP
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