Question

defined the step involved in getting clarified water from waste water​

Answer 1

Oils and fats harden and block the sewage pipes. In an open drain also, fats block porosity of soil which affects its water filtering efficiency.

... Answer:

The steps involved in getting clarified water from wastewater are as follows:

(i)Use an aerator to bubble air through the wastewater.

A mechanical stirrer or a mixer can also be used in place of the aerator.

This helps in reducing bad odour of the wastewater.


(ii)Then, the water is filtered through the layers of sand, fine gravel, and medium gravel. Filtration makes the wastewater clean from various types of pollutants.

The water is filtered continuously until it becomes clear.


(iii)Then any disinfectant such as chlorine tablet is added to the filtrate and stirred to obtain completely clear water.

Answer 2

Oils and fats harden and block the sewage pipes. In an open drain also, fats block porosity of soil which affects its water filtering efficiency. That is why oils and fats should not be released in the drain. Question 4: Describe the steps involved in getting clarified water from wastewater