Water Purification

What can be concluded from the flow chart about the water treatment system?

Explain how the treated water is disinfected in the wastewater treatment plants.

Explain the first method in the treatment of polluted water.

What is the role of filtration tank in water purification system?

Sedimentation tank in the water purification system is used to kill bacterias.

Can we drink water directly from the tank? Is it safe? 

Name the process in which the water is usually sprayed through air.

Samir has fallen sick during the monsoon season. The doctor has advised him to drink pre-boiled, cooled and covered water because

Yash collected some water from a lake and filtered it.

Is this water now safe for drinking?

Give different processes of the purification of water.

What chemical substances are used to destroy the germs present in water?

The hardness of water is due to the presence of dissolved _____.

The potable water is obtained after sedimentation and filtration of river water.

Describe the different types of water purification before its distribution in the town.

The chemical not used for purification of water is:

Impurities from water can be separated by:

Select the activity which will have no harmful effects on the quality of water.

How to purify the polluted water?