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Working characteristics and precautions for UV sterilizers; how to maintain and care for UV sterilizers?

2021-03-12

Working characteristics and precautions for UV sterilizers; how to maintain and care for UV sterilizers?

The principle behind UV disinfection is that when organic contaminants pass through the area exposed to ultraviolet light, the UV rays penetrate the cell membranes and nuclei of organisms, causing damage. DNA The molecular bonds are disrupted, causing the microorganism to lose its ability to replicate or become inactive. As a result, the cells cannot replicate, and the microorganisms will soon die.

 

The characteristic of UV sterilization is that... : An efficient one , Safety , Environmental protection , The technology of economics , Capable of effectively inactivating pathogenic viruses , Bacteria and protozoa , Moreover, it hardly produces any disinfection byproducts. , Precautions for UV Disinfection What are there? 。

 

The ultraviolet sterilizer features high stability in irradiation intensity and can achieve a long sterilization lifespan. 9000 About an hour later, a quartz glass tube with high transmittance was also used; its light transmittance can reach... 87% Left and right, and it can also achieve a long sterilization lifespan. 8000 hours, and even the irradiance intensity... 253.7um It’s also highly stable and, in particular, boasts advantages such as audible and visual alarm notifications even after the lamp tube breaks. So, do you know what the operational characteristics of ultraviolet sterilizers are and how they should be maintained and cared for? Next, let’s take a closer look together!

 

One, Working characteristics of ultraviolet sterilizers:

 

Ultraviolet disinfection It exerts a cumulative effect on microorganisms passing through its irradiation zone—meaning that microorganisms which were not killed during their first passage through the UV-irradiated area will be killed in subsequent cycles. UV radiation impairs the reproductive capacity of microorganisms. This point is extremely important, because a single bacterium... 24 Within hours, bacteria can multiply into hundreds, thousands, or even millions. This means that even the most effective air filters cannot completely remove microorganisms. Therefore, using ultraviolet (UV) light for sterilization is the fundamental solution. The dose of UV light required to kill microorganisms depends on both the intensity of the UV light and the duration of exposure. To determine whether the UV light intensity meets the standard, it is necessary to use a UV illuminance meter specifically designed for germicidal lamps.

 

First, it boasts a faster disinfection rate and high operational efficiency. In particular, it does not alter the physical or chemical properties of the water nor does it introduce any odors or tastes into the water. Moreover, this device is simple to operate, making it easy to manage and reducing the physical workload for workers, thereby further promoting safe production. After exposing microorganisms in the water to ultraviolet light, the nucleic acid molecules within the nucleoproteins—essential components for the survival of bacteria and viruses—absorb large amounts of UV radiation, leading to their denaturation and subsequent loss of biological activity. As a result, the energy absorbed by these microorganisms reaches a lethal level, causing massive bacterial death. However, since the disinfection efficiency of ultraviolet light is wavelength-dependent, typically the optimal energy lies at wavelengths of 250-260nm The ultraviolet disinfection efficiency within this range is the highest. In particular, the water quality after disinfection can meet the national hygienic standards for drinking water.

 

Ultraviolet sterilization and disinfection It is a highly efficient, safe, environmentally friendly, and cost-effective technology that can effectively inactivate pathogenic viruses, bacteria, and protozoa with virtually no generation of disinfection byproducts. Therefore, in the disinfection processes for water purification, wastewater treatment, reclaimed water reuse, and industrial water treatment, UV It has gradually evolved into one of the most effective disinfection technologies. Thanks to its highly efficient inactivation of Cryptosporidium and its ability to produce no byproducts, ultraviolet light demonstrates excellent market potential in water treatment.

 

II. Maintenance and Care for Ultraviolet Sterilizers:

 

1 Regular inspections are required to ensure the proper operation of the UV lamp.

2 , in continuous use 9000 The sterilizer, whether used for hours or after one year, requires replacement of the UV lamp to ensure a high sterilization rate. It’s also crucial to note that the UV light should remain continuously on; frequent switching on and off can significantly shorten the lamp’s lifespan.

3 When replacing the UV lamp tube, you need to unplug the power socket of the lamp before removing the UV lamp tube. Especially when installing a new lamp tube, be careful not to touch the quartz glass of the new tube with your fingers, as fingerprints can impair the effectiveness of the sterilizing light. Also, take care to gently place the lamp tube into the stainless steel sterilizer.

 

Three Precautions for UV Disinfection

 

1 Ultraviolet irradiation depends on the spatial area, suspension height, and its own power output—a single unit. 30w The effective sterilization range of a germicidal lamp should be less than... 30 Cubic meters—generally, the power of a germicidal lamp per cubic meter of space should be greater than... 1-1.5w。

2 It is important to pay attention to the irradiation distance between the object being disinfected and the germicidal lamp—that is, the suspension height of the lamp tube should be less than. 2.5 Meters, some units have lamp suspension heights greater than 2.5 Rice, even larger than 3，4 All types of lamps are available. The intensity of ultraviolet radiation is nearly inversely proportional to the irradiation distance; if the lamp is hung too high, it will inevitably compromise the sterilization effect.

3 Ultraviolet (UV) disinfection is a static sterilization method. When the UV lamp is turned on, all personnel should leave the disinfection area to avoid causing harm to the human body. For UV disinfection units, it is recommended to install the control switch outdoors—turn it on only after everyone has left the premises, and turn it off when they have all returned.

 

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