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How effective is the open-channel UV disinfection system in actually killing bacteria?

2021-03-30

How effective is the open-channel UV disinfection system in actually killing bacteria?

Open-channel UV disinfection systems utilize the irradiance intensity emitted by UV lamps—the irradiance intensity transmitted by the UV disinfection lamp—which is inversely proportional to the distance between the lamp and the object being disinfected and sterilized. Ultraviolet light is a common mechanism by which chemical substances function; it consists of a stream of unbound particles.

　　Each ultraviolet photon with a wavelength of 253.7 nm possesses a kinetic energy of 4.9 eV when used at an irradiance level exceeding 36,000 to 65,000 μW/cm² against bacteria and viral infections.

　　It exerts a powerful inhibitory effect on deoxyribonucleotides (DNA) and ribonucleotides (RNA) of bacteria and viral infections, thereby depriving various bacteria, viruses, and other pathogens of their ability to replicate and proliferate, thus achieving practical sterilization effects.

　　The open-channel UV disinfection system is applicable to a wide range of applications, including power supply for municipal engineering projects, sewage treatment plants, medical wastewater treatment, residential water supply, landscape water in parks and gardens, tap water for aquaculture farms, swimming pools, outdoor hot springs, and other wastewater treatment scenarios. It achieves highly efficient sterilization—eliminating 99% to 99.9% of bacteria within just seconds—offering faster and more effective disinfection.

　　The open-channel UV disinfection system belongs to the pipeline-flow type. In other words, as water flows through the UV sterilizer, it is directly exposed to ultraviolet rays emitted by the UV lamps located outside the pipe, effectively eliminating microorganisms such as bacteria and viruses present in the water.

　　Open-channel UV disinfection systems utilize the irradiance intensity emitted by UV lamps—the irradiance intensity transmitted by the UV disinfection lamp—which is inversely proportional to the distance between the lamp and the object being disinfected and sterilized. Ultraviolet light is a common mechanism by which chemical substances function; it consists of a stream of unbound particles.

　　Flow-through ultraviolet sterilizers are widely used and feature rapid disinfection, high efficiency, and low operating costs. They are commonly found in various fields such as domestic water supply, food processing, and electronics, and are a typical disinfection and sterilization device in wastewater treatment.

　　The efficacy of open-channel UV disinfection systems is inversely proportional to the distance between the UV lamp’s irradiance intensity—the intensity of ultraviolet radiation emitted by the UV germicidal lamp—and the surface of the object being disinfected. Ultraviolet light represents a unique mode of energy transfer, consisting of a stream of discrete particles. Each UV photon with a wavelength of 253.7 nm carries an energy of 4.9 eV. When bacteria and viruses absorb doses ranging from 36,000 to 650,000 μW/cm², these photons exert a powerful destructive effect on the deoxyribonucleic acid (DNA) and ribonucleic acid (RNA) of the microorganisms, thereby disabling their ability to replicate and proliferate, ultimately achieving a sterilizing effect.

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