Which of the following statement is correct ? - Public Health Engineering

Dnyan Deshmukh

Staff member
Which of the following statement is correct ? -

(a) Slow sand filters work under atmospheric pressure

(b) Rapid sand filters require coagulation

(c) Rapid sand filters should be cleaned after 2 to 3 days

(d) all of the above.

The correct Answer Is
(d) all of the above