Waste Water Engineering - Study Mode
[#156] If the depletion of oxygen is found to be 5 ppm after incubating a 2.5% solution of sewage sample for 5 days at 21°C, B.O.D. of the sewage is
Correct Answer
(D) 200 ppm
[#157] If the discharge of a sewer running half is 628 1.p.s., i = 0.001, and n = 0.010, the diameter of the sewer, is
Correct Answer
(D) 1.69 m
[#158] Acid regression stage of sludge digestion at a temperature 21°C extends over a period of
Correct Answer
(D) 90 days
[#159] For non-scouring velocity 5 m/sec, the type of sewers generally preferred to, is
Correct Answer
(C) Glazed bricks sewers
[#160] A manhole is generally provided at each
Correct Answer
(D) All the above