Waste Water Engineering The presence of free ammonia in sewage, is detected by Adding sulphuric acid Phenol-di-sulphuric acid Boiling Adding potassium permanganate Adding sulphuric acid Phenol-di-sulphuric acid Boiling Adding potassium permanganate ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering A five day B.O.D. at 15°C of the sewage of a town is 100 kg/day. If the 5 day B.O.D. per head at 15°C for standard sewage is 0.1 kg/day, the population equivalent is 10000 1000 100 5000 10000 1000 100 5000 ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The maximum spacing of manholes specified by Indian standard in sewers upto 0.3 m diameter is 75 m 30 m 45 m 20 m 75 m 30 m 45 m 20 m ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering In a sludge digestion tank if the moisture content of sludge V1 litres is reduced from p1 % to p2 % the volume V2 is [(100 – P1)/(100 – P2)] V1 [(100 + P1)/(100 – P2)] V1 [(100 + P2)/(100 – P1)] V1 [(100 – P1)/(100 + P2)] V1 [(100 – P1)/(100 – P2)] V1 [(100 + P1)/(100 – P2)] V1 [(100 + P2)/(100 – P1)] V1 [(100 – P1)/(100 + P2)] V1 ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The sewers Must be of adequate size to avoid over flow Must be laid at least 2 to 3 m deep to collect /water from the basements Must flow under gravity ½ to ¾ full All listed here Must be of adequate size to avoid over flow Must be laid at least 2 to 3 m deep to collect /water from the basements Must flow under gravity ½ to ¾ full All listed here ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The settling velocity of the particles larger than 0.06 mm in a settling tank of depth 2.4 is 0.33 m per sec. The detention period recommended for the tank, is 2 hours 30 minutes 1 hour 1 hour and 30 minutes 2 hours 30 minutes 1 hour 1 hour and 30 minutes ANSWER DOWNLOAD EXAMIANS APP
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