As we all know, ultraviolet light is a broad-spectrum and efficient disinfection method, which has a good inactivation effect on bacteria, viruses and chlorine-resistant protozoa.
In addition, ultraviolet disinfection does not produce disinfection by-products (DBPs), and does not change the pH and taste of the water. Therefore, UV sterilizers have been used more and more.
Although the ultraviolet disinfection equipment is good, in actual use, some improper use methods will not only affect the life of the product and the use effect, but also cause serious personal injury.
1. Frequently start the UV sterilizer
For customers who use ultraviolet disinfection equipment in the initial stage, they may think that the equipment is turned on when necessary, and the equipment is turned off when not needed, which can make the lamp life longer.
The fact is just the opposite! UV lamp is a kind of gas discharge lamp. Every time it is started, it will cause an impact on the filament, which will cause the electron powder on the filament to sputter. Frequent start-up will make the loss rate of electronic powder higher than the rate of filament damage, which will shorten the life of the UV lamp.
Therefore, the longer the continuous working time of the UV sterilizer, the fewer the number of switches, and the longer the life span.
2. No maintenance and replacement of the lamp
Some friends believe that as long as the ultraviolet lamp can still light up, it will prove that it can also disinfect and sterilize water.
In fact, the principle of ultraviolet sterilization mainly relies on the irreversible damage to microbial DNA and RNA caused by the UVC band. And each kind of microorganism has its specific ultraviolet kill and death dose standard. The dose is the product of irradiation intensity and irradiation time {K (bactericidal dose) = I (irradiation intensity) t (irradiation time)}.
The intensity of the UV lamp is not directly related to whether it can be lit. Generally speaking, for ordinary low-pressure mercury lamps, we recommend that you replace the lamp tube once a year to ensure the effect.
If you need to know the disinfection status of the equipment more accurately, you can choose an ultraviolet intensity detector on the equipment, so that you can more intuitively and accurately judge the replacement time of the lamp.
3. Temperature influence
Temperature is a condition factor that is often overlooked, and temperature has a certain effect on the intensity of ultraviolet radiation. Too high or too low temperature will reduce the radiation intensity. Generally, the ultraviolet radiation intensity is the largest and stable in the range of 20-40 degrees, and the disinfection effect that can be achieved is the most ideal.
Therefore, when using it, you must strictly pay attention to the temperature of the water body not exceeding the temperature range of 5 to 60 degrees. Once exceeded, it will lead to processing results and fail to meet the expected requirements.
4. Relative humidity
The relative humidity mainly refers to the humidity of the external environment when the ultraviolet sterilizer is working. If the humidity is higher than 85%, the equipment may have electrical safety accidents, such as electric leakage, component failure, etc., causing potential safety hazards. Special attention should be paid during the wet rainy season or the exchange season when the temperature changes suddenly.
