Waste Water Engineering In the activated sludge process Sludge is activated by constant stirring Water is removed by centrifugal action Aeration is continued till stability Aeration is done with an admixture of previously aerated sludge Sludge is activated by constant stirring Water is removed by centrifugal action Aeration is continued till stability Aeration is done with an admixture of previously aerated sludge ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The digested sludge from septic tanks, is removed after a maximum period of 3.5 years 3 years 5 years 4 years 3.5 years 3 years 5 years 4 years 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 250 mg/l 50 mg/l 100 mg/l 150 mg/l 250 mg/l 50 mg/l ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The moisture content of sludge is reduced from 90% to 80% in a sludge digestion tank. The percentage decrease in the volume of sludge, is 0.1 0.5 0.05 0.25 0.1 0.5 0.05 0.25 ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering In SI units the power of sound is represented in Joules Newtons Kgs Watts Joules Newtons Kgs Watts ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The sewers Must be laid at least 2 to 3 m deep to collect /water from the basements Must be of adequate size to avoid over flow Must flow under gravity ½ to ¾ full All listed here Must be laid at least 2 to 3 m deep to collect /water from the basements Must be of adequate size to avoid over flow Must flow under gravity ½ to ¾ full All listed here ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS