Question

water is chlorinated during tretment give reason​

Answer 1

Answer:

It is done so as to free the water from germs or harmful micro-organisms.

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Answer 2

Water is chlorinated during treatment due to the fact that:-

1)Chlorine is a highly efficient disinfectant, and is added to public water supplies to kill disease-causing pathogens, such as bacteria, viruses, and protozoans, that commonly grow in water supply reservoirs, on the walls of water mains and in storage tanks. Thus, Chlorine disinfectants can reduce the level of many disease-causing microorganisms in drinking water to almost immeasurable levels.

2) Chlorine disinfectants reduce many disagreeable tastes and odors. Chlorine oxidizes many naturally occurring substances such as foul-smelling algae secretions, sulfides and odors from decaying vegetation.Thus, Chlorine helps in Taste and Odor Control .

3)Chlorine disinfectants eliminate slime bacteria, molds and algae that commonly grow in water supply reservoirs, on the walls of water mains and in storage tanks.Thus, Chlorine helps in Biological Growth Control .

4)Chlorine disinfectants destroy hydrogen sulfide (which has a rotten egg odor) and remove ammonia and other nitrogenous compounds that have unpleasant tastes and hinder disinfection. They also help to remove iron and manganese from raw water.Thus, Chlorine helps in Chemical Control .