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____________________?

Related Mcqs:

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____________________?

A. 100 B. 1000 C. 5000 D. 10000...

For design purposes, the normal rate of infiltration of ground water into the sewer, is___________________?

A. 500 litres/km/cm B. 1000 litres/km/cm C. 1500 litres/km/cm D. 2000 litres/km/cm...

For a peak discharge of 0.0157 cumec, with a velocity of 0.9 m/sec, the diameter of the sewer main, is________________?

A. 10 cm B. 12 cm C. 15 cm D. 18 cm...

Kjeldahl nitrogen is a mixture of___________________?

A. Ammonia and nitrogen B. Nitrogen and organic nitrogen C. Organic nitrogen and ammonia D. All the above...

In sewers the velocity of flow should not be_________________?

A. More than the self-cleansing velocity B. Less than the self-cleansing velocity C. Less than 10 m/sec D. More than 20 m/sec...