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Common disinfection methods for purified water equipment
- 2019-08-16-

Ozone disinfection: Ozone is a broad-spectrum fungicide, which can kill bacterial propagules and spores, viruses, fungi, etc. and can destroy botulinum toxins. The ozone sterilization mechanism is to achieve the sterilization effect by destroying the structure of the microbial membrane through oxidation. Ozone first acts on cell membranes, causing damage to membrane constituents and causing metabolic disorders. Ozone continues to penetrate through the membrane and destroy the lipoproteins and lipopolysaccharides in the membrane, changing the permeability of the cells, leading to cell lysis and death. The mechanism of ozone inactivation of the virus is the destruction of viral ribonucleic acid (RNA) or deoxyribonucleic acid (DNA) by oxidation.

Pasteurization: The process of heating a liquid to a certain temperature for a period of time to kill fermenting microorganisms that may cause disease, deterioration or unwantedness. Pasteurization has two main functions: ① periodic disinfection of pretreatment units such as activated carbon in purified water systems, periodic disinfection of RO / EDI units, and periodic disinfection of storage and distribution pipe network units; Microbial suppression during normal operation of WFI systems.

Chemical disinfection: Chemical disinfection refers to the use of chemical disinfectants to act on microorganisms and pathogens, denaturing their proteins, losing their normal functions and dying. Currently used are chlorine-containing disinfectants, oxidation disinfectants, iodine disinfectants, aldehyde disinfectants, heterocyclic gas disinfectants, phenol disinfectants, alcohol disinfectants, quaternary amine disinfectants, and the like.

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