Automated Disinfection System

Commonly used disinfection methods are divided into physical disinfection, chemical disinfection and biological disinfection.
1. Physical disinfection method: refers to the method of killing or eliminating pathogenic microorganisms and other harmful microorganisms through physical factors. It is characterized by rapid action, and no harmful substances are left behind for disinfection items. Commonly used physical disinfection methods include natural purification, mechanical disinfection, thermal disinfection and ultraviolet irradiation.
2. Chemical disinfection method: refers to the method of disinfection with chemicals. The chemical disinfection method is easy to use and does not require complicated equipment, but some disinfection drugs have certain toxicity and corrosiveness. In order to ensure the disinfection effect and reduce the toxic and side effects, the prescribed conditions of use and instructions for use must be strictly observed.
3. Biological disinfection method: It is the use of some organisms to eliminate pathogenic microorganisms. It is characterized by slow action and limited effect, but low cost. Mainly used for the sanitation of garbage and excrement. Commonly used methods are biological thermal disinfection technology and biological oxidation disinfection technology.
Water treatment disinfection systems use chemical methods to attack and eliminate bacteria (fungi, bacteria) and viruses. The process of these systems differs from that of preservatives, which do not allow microbial materials to spread through various means without completely destroying them. Water disinfection is an essential element in the production of high-quality water, which can be used for reproductive or other purposes. Water disinfection is the process of killing pathogenic microorganisms that are harmful to humans in urban water treatment systems. In the urban water supply system, the water supply plant of the groundwater source (the influent from the groundwater source generally undergoes simple sedimentation treatment or direct sterilization treatment) can remove a large number of bacteria through coagulation, sedimentation and filtration in the water. Generally speaking, coagulation and sedimentation can remove 50-90% of the coliform bacteria in the water, and filtration can further remove about 90% of the coliform bacteria in the water, but it is far from the requirements stipulated in the drinking water quality standard (qualified index). Less than 3 E. coli in 1 liter of water used for drinking water disinfection). The water at this time also contains about 100 coliform bacteria, so it needs to be disinfected. There are many methods of water disinfection, commonly used are chlorine disinfection, ozone disinfection, ultraviolet disinfection and so on. According to these disinfection methods, there are chlorine dioxide system, ozone generator, sodium hypochlorite generator, ultraviolet disinfection system, etc.
Disinfectants can be classified in various ways such as chemical composition, disinfection effect, etc. Most disinfectants can be divided into four types: biocidal disinfectants, high-efficiency disinfectants, medium-efficiency disinfectants and low-efficiency disinfectants according to their disinfection effects.
Killing disinfectants: including formaldehyde, glutaraldehyde, ethylene oxide, etc., can kill all microorganisms and meet the sterilization requirements;
High-efficiency disinfectants: including peracetic acid, chlorine dioxide, sodium hypochlorite, dichlorodimethylethyl lactam, etc., can kill all bacterial propagules, viruses, fungi and spores;
Medium-effective disinfectants: including ethanol, chlorhexidine, iodophor, etc., cannot kill bacterial spores, but can kill bacterial propagules, fungi and most viruses;
Inefficient disinfectants: including benzalkonium bromide, benzalkonium chloride, phenol, etc., can kill most bacterial propagules, some fungi and viruses, but cannot kill bacterial spores, Mycobacterium tuberculosis and some fungi and viruses.
Different disinfectants are suitable for different occasions. For example, inactivated disinfectants should be used in the sterilization of operating rooms and medical equipment, high-efficiency disinfectants should be used in medical places, medium-efficiency disinfectants should be used in skin disinfection, and low-efficiency disinfectants should be used in wound cleaning. .
Used in rainwater treatment, wastewater treatment, groundwater, surface water, seawater desalination, reverse osmosis.

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