How does chlorine reacts in the process of water treatment?

When chlorine is added to water for disinfection purposes, it usually starts reacting with dissolved organic and inorganic compounds in the water. ... Chlorine can react with ammonia (NH3) to chloramines, chemical compounds which contain chlorine, nitrogen (N) and hydrogen (H).

1 Remove Microorganism

2 Used For water Setrilization

3 Kill Bacteria  

It is especially added in water to destroys vegetative forms of harmful microorganisms (as bacteria and fungi etc.) 

This method is used to

1-kill certain bacteria and other microbes.

2- Increase the precipitation speed by reacting with heavy metals

chlorine add to water fore many purposes 

1.water sterilization

2.conversation of deslved and none desolved metal to oxide and sedimentation

Chlorine as a disinfectant reacts with reducing substances likeferrous salts,or hydrogen sulphide,these will reduce part of chlorine added to chloride ions.If the quantinty of chlorine added is suffiently large to ensure that it is not all reduced or combine,a portion of it will remain free in water.This is termed as Free Residula Chlorine (FRC) and this is the most important for disinfection.

When chlorine reacts chemically it loses its oxidizing power and consequently its disinfecting properties.

Some ammoniacal chlorides however still reain some disinfecting properties.

Chlorine present in the combined form is termed as residual combined chlorine or combined chlorine.

when chlorine is added to water it reacts with the organic and inorganic compounds in the water, precipitating them out. it kills microorganisms present

addition of chlorine in treated water for disinfection., 

Chlorine react with water and forms Hypochlorous Acid which protect stegnent or following water from bacteria chlorine also it protect for the formation of alge

chlorine in water gives hydrochloric acid and hypochlorous acid. hypochlorous acid contain nascent oxygen which helps in killing germs in water

Chlorine reacts with water and forms hydro chloric acid and hydrochloride ion which attacks the lipids on the cell wall of the bacteria and kills it. it is the timing difference in between hydrochloric acid and ion, the acid kills destriys the cell wall with approx 30 minutes while the ion take almost 54 minutes.