Water treated with UV sterilization is usually drinkable, but there are some preconditions and precautions.
The bactericidal effect of ultraviolet light
Sterilization principle: Ultraviolet sterilization mainly destroys the DNA and RNA of microorganisms in water through ultraviolet light (200-280 nm) in the UVC band, inhibiting their reproduction and survival, so as to achieve disinfection effect.
Bactericidal range: ultraviolet bactericidal can effectively destroy most bacteria, viruses, protozoa and other pathogens in water. However, UV rays do not remove chemical pollutants, heavy metals or suspended particles from water.
Conditions for direct drinking
Water quality prerequisite:
Water cleanliness: UV bactericidal effect depends on the cleanliness of the water. If there is more suspended matter, organic matter or turbidity in the water, these substances will block the spread of ultraviolet rays and reduce the bactericidal effect. Therefore, the water quality should be relatively clear and preferably pre-filtered.
Chemical contaminants: If the water contains harmful chemical contaminants, such as heavy metals, pesticides or industrial pollutants, UV sterilization cannot remove these substances. In this case, even after UV treatment, the water may not be suitable for direct drinking.
Effectiveness of UV treatment:
Uv dose: The dose (duration and intensity) of UV light must be high enough to ensure that all pathogens in the water are killed. Standard UV water treatment systems are designed with appropriate flow rates and irradiation intensity to ensure adequate bactericidal effect.
Equipment maintenance: UV lamps need regular replacement and maintenance to ensure that they are in optimal working condition. If the lamp is aged or scaled, the UV output will decrease, resulting in a weakened bactericidal effect.
System design:
Overflow sterilization systems: UV sterilization systems for drinking water are usually designed to be overflow so that the water is fully irradiated when it passes through the UV lamp. This design ensures that the entire stream is treated with adequate UV light.
conclusion
UV sterilized water is usually drinkable if the following conditions are met:
· The water is relatively clear, with no suspended matter or organic matter blocking UV transmission.
· There are no chemical pollutants that cannot be removed by ultraviolet light.
· A qualified UV water treatment system is used and the equipment is well maintained.
If there are doubts about the quality of the water or the effectiveness of the UV treatment system, it is recommended to test the water first or use a multistage purification system (such as combined activated carbon filtration or reverse osmosis filtration) to ensure the safety of the drinking water.
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Shenzhen Hechuang Hitech CO., LTD.
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Shenzhen Hechuang Hitech CO., LTD. is a National High-tech Enterprise, which has won a number of invention patent technology awards. We focuses on the Research, Development, Production and Application of INNEST UVC-LED Technology. It adopts innovative technologies of revolutionary optics and fluid science, which can kill bacteria and viruses in 0.2 seconds, with a sterilization rate of 99.999%. Hechuang Hitech provides safer, more efficient and more humanized sterilization module design for Water Air and Surface Disinfection products.
