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  2. Water chlorination - Wikipedia

    en.wikipedia.org/wiki/Water_chlorination

    In a paper published in 1894, it was formally proposed to add chlorine to water to render it "germ-free". Two other authorities endorsed this proposal and published it in many other papers in 1895. [4] Early attempts at implementing water chlorination at a water treatment plant were made in 1893 in Hamburg, Germany.

  3. Chloric acid - Wikipedia

    en.wikipedia.org/wiki/Chloric_acid

    It may be produced from barium chlorate through its reaction with sulfuric acid, which results in a solution of chloric acid and insoluble barium sulfate precipitate: [2] Ba(ClO 3) 2 + H 2 SO 4 → 2 HClO 3 + BaSO 4. The chlorate must be dissolved in boiling water and the acid should be somewhat diluted in water and heated before mixing.

  4. Hypochlorous acid - Wikipedia

    en.wikipedia.org/wiki/Hypochlorous_acid

    Hypochlorous acid is an inorganic compound with the chemical formula Cl O H, also written as HClO, HOCl, or ClHO. [2] [3] Its structure is H−O−Cl.It is an acid that forms when chlorine dissolves in water, and itself partially dissociates, forming a hypochlorite anion, ClO −.

  5. Salt water chlorination - Wikipedia

    en.wikipedia.org/wiki/Salt_water_chlorination

    Salt water chlorination is a process that uses dissolved salt (1000–4000 ppm or 1–4 g/L) for the chlorination of swimming pools and hot tubs.The chlorine generator (also known as salt cell, salt generator, salt chlorinator, or SWG) uses electrolysis in the presence of dissolved salt to produce chlorine gas or its dissolved forms, hypochlorous acid and sodium hypochlorite, which are already ...

  6. Disinfection by-product - Wikipedia

    en.wikipedia.org/wiki/Disinfection_by-product

    DBPs are present in most drinking water supplies that have been subject to chlorination, chloramination, ozonation, or treatment with chlorine dioxide.Many hundreds of DBPs exist in treated drinking water and at least 600 have been identified.

  7. Mixed oxidant - Wikipedia

    en.wikipedia.org/wiki/Mixed_Oxidant

    A mixed oxidant solution (MOS) is a type of disinfectant that has many uses including disinfecting, sterilizing, and eliminating pathogenic microorganisms in water. [1] An MOS may have advantages such as a higher disinfecting power, stable residual chlorine in water, elimination of biofilm, and safety. [2]

  8. Electrochlorination - Wikipedia

    en.wikipedia.org/wiki/Electrochlorination

    The water used is usually brackish water or brine (i.e. a solution with >0.5% salinity). In these cases, additional contaminant chemicals may be present in the water feed. The low voltage DC current still performs electrochlorination. The excess chemicals are left untouched and can be easily discarded. [2]

  9. Water purification - Wikipedia

    en.wikipedia.org/wiki/Water_purification

    Groundwater: The water emerging from some deep ground water may have fallen as rain many tens, hundreds, or thousands of years ago. Soil and rock layers naturally filter the ground water to a high degree of clarity and often, it does not require additional treatment besides adding chlorine or chloramines as secondary disinfectants.

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