Liquid chlorine is commonly

Different types of chlorine

The use of chlorine to natural water before every other therapy to improve the coagulation & to remove the style, smell, & color

Post Chlorination

Application of chlorine to treated liquid after all the other treatment. Dosage chlorine are priced between 0.25-5.0mg/lit to have the combine recurring chlorine in number of 0.1-0.2mg/lit

Free Offered Chlorine

Effective chlorine disinfection is dependent upon its chemical type in water. The influencing elements are pH, heat, & natural content in liquid. When chlorine gasoline dissolved in liquid, it rapidly hydrolysis to hydrochloric acid (HCL) & hypochlorous acid (HOCL)

Cl2 + H2O ? H+ + Cl- + HOCL

The balance constant is KH = [H+] [Cl-] [HOCL]

[Cl2(aq)] = 4.48 × 10 - 4 at 25 °C

Hypochlorous acid is a poor acid & at the mercy of the additional dissociation to hypochlorite ions & hydrogen ions

HOCL ? OCl- + H+

& its acid dissociation constant Ka is Ka = [OCl-] [H+]

HOCL = 3.7 × 10-8 at 25 ?C

Combine Available Chlorine

Chlorine reacts with certain mixed constituent in liquid, such as for example ammonia & amino nitrogen compounds to produce the chloramines. They are referred as combined chlorine.

Source: www.aboutcivil.org
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