Ultraviolet sterilizer is widely used and has high value in water treatment. It destroys and changes the DNA (deoxyribonucleic acid) structure of microorganisms through ultraviolet light irradiation, so that the bacteria die immediately or cannot reproduce offspring to achieve the purpose of sterilization . It is UVC ultraviolet rays that really have a bactericidal effect, because C-band ultraviolet rays are easily absorbed by the DNA of organisms, especially ultraviolet rays around 253.7nm are the best. Ultraviolet sterilizer is a purely physical disinfection method, which has the advantages of simple and convenient, broad-spectrum and high efficiency, no secondary pollution, easy management and automation. expanding.
So, how should the ultraviolet sterilizer be cleaned and maintained? 1. The best conditions for the use of the ultraviolet sterilizer are: water temperature: 5°C-50°C, relative temperature: not more than 93% (at 25°C) voltage: 220±10V 50Hz The water quality of drinking water entering the treatment equipment has a transmittance of 95%-100% in 1cm. If the water quality to be treated is lower than the national standard, such as the chromaticity is higher than 15 degrees, the turbidity is higher than 5 degrees, and the iron content is higher than 0.3 mg/L, first use other purification and filtration methods to make it reach the standard before use. Ultraviolet sterilization equipment. 2. Regularly check to ensure the normal operation of the ultraviolet lamp.
The UV lamp should be turned on continuously, repeated switching will seriously affect the service life of the lamp. 3. Regular cleaning: According to the water quality, the ultraviolet lamp tube and the quartz glass sleeve need to be cleaned regularly. Wipe the lamp tube with alcohol cotton ball or gauze, remove the dirt on the quartz glass sleeve and wipe it clean, so as not to affect the transmittance of ultraviolet rays , and affect the bactericidal effect. 4. Replacement of lamp tubes: after 9000 hours of continuous use of imported lamp tubes, or after one year, the ultraviolet lamp tubes should be replaced to ensure a high sterilization rate.
When replacing the lamp tube, first unplug the lamp power socket, pull out the lamp tube, then carefully insert the cleaned new lamp tube into the sterilizer, install the sealing ring, check for water leakage, and then plug in the power supply. Be careful not to touch the quartz glass of the new lamp with your fingers, otherwise the bactericidal effect will be affected by stains. 5. Prevention of ultraviolet radiation: Ultraviolet rays have strong lethality to bacteria, and also have certain damage to the human body. When starting the disinfection lamp, avoid direct exposure to the human body. If necessary, use protective glasses. Do not directly look at the light source with your eyes to avoid Burns the eye mask.
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