Oxidation and Disinfection
| Ozone Ozone is used for oxidation and chemical disinfection. Advanced oxidation is achieved by chemical reactions that generate highly reactive, short-lived hydroxyl radicals for the purpose of oxidising chemical compounds. This is used for the oxidation of certain humic compounds, pesticides and chlorinated organics, and some taste and odour compounds in surface waters and contaminated ground water. Oxidation also plays a role in the removal of certain metals by the formation of metal oxide precipitates. Chemical disinfection is carried out to deactivate pathogenic organisms in the water. Disinfection and oxidation are typically undertaken upstream of the desalination processes. Chlorine Chlorine (Cl2) is used for oxidation as well as chemical disinfection in the water and wastewater treatment industry. Chemical disinfection is carried out to deactivate pathogenic organisms in the water. Disinfection and oxidation are typically undertaken upstream of desalination processes. |
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| Ultra Violet (UV) Ultra violet light (UV) is used in the disinfection process to deactivate micro-organisms such as viruses, bacteria and protozoa. UV is also used in conjunction with certain chemicals that can produce a lasting residual in the distribution system. UV light can also be used to oxidise complex organic molecules and compounds. |
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