Waste Water Engineering - Section 1 (4)

Pick up the in-correct statement from the following :

In primary sedimentation, the 0.2 mm inorganic solids get separated if specific gravity is

The screens are fixed

The dimensions of a rectangular settling tank are : length 24 m, width 6 m and depth 3 m. If 2 hour detention period for tanks is recommended, the rate of flow of sewage per hour, is

The detention time of a circular tank of diameter d and water depth H, for receiving the sewage Q per hour, is

For treating the sewage of a large city, you will recommend

When drainage to sewage ratio is 20, the peak dry weather flow is

A rainfall may be classified as acidic if its pH value is less or equal to