water treatment the oxidants and disinfectants degremont in brazil

water treatment the oxidants and disinfectants degremont in brazil
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  • What is the role of chemical oxidants in water treatment?
  • Chemical oxidants have been applied in water treatment for more than a century, first as disinfectants and later to abate inorganic and organic contaminants. The challenge of oxidative abatement of organic micropollutants is the formation of transformation products with unknown (eco)toxicological co …
  • What oxidants are used in disinfection and chemical oxidation?
  • This chapter treats the chemistry of oxidants used in disinfection and chemical oxidation during water treatment, with emphasis on chlorine gas (Cl 2), its products in water (hypochlorous acid, HOCl, and its conjugate base hypochlorite, OCl –), and other oxidized forms of chlorine.
  • Why is chemical oxidation used in municipal water treatment?
  • Chemical oxidation has been applied in municipal water treatment for more than a century, initially for disinfection. In the early decades, chlorine disinfection was adopted in the fight against waterborne disease.
  • Which oxidation process is available for oxidative water treatment?
  • Numerous ultraviolet (UV)-based oxidation processes are available for oxidative water treatment. In these processes, highly reactive radical species are formed such as hydroxyl ( • OH) and sulfate radicals (SO 4•−) from the photolysis of hydrogen peroxide, persulfate, or chlorine, which are capable of pollutant degradation.