Enjoy a 15% discount for the first purchase, discount code LIST15

The structural characteristics of the UV sterilizer and what should be paid attention to when customizing?

The UV intensity of each point in the uv sterilizer is different: if the water can achieve good radial mixing when passing through the reactor, an almost equal dose of UV radiation will be obtained in each unit volume of the entire cavity. However, if the mixing is not sufficient, some water gets a higher dose and some water gets a lower dose, then some bacteria or viruses will not get enough inactivated dose after passing through the reactor.

In the disinfection process of the ultraviolet disinfector, the water body mainly passes through three flow sections: the water inlet section, the disinfection section and the water outlet section. Among them, the killing of bacteria in the water is mainly completed in the disinfection section. However, as far as the current technology is concerned, immediately after the non-sterile water enters the cavity, a water layer is formed around the quartz glass tube. The position of the water layer and the lamp tube is relatively fixed. In most processes, keep the flow line parallel to the ultraviolet lamp, that is, the water flow close to the ultraviolet lamp tube is still close to the ultraviolet lamp tube, and the water flow away from the ultraviolet lamp tube is usually still far away from the ultraviolet lamp tube. The distance between the water flow and the lamp tube Roughly the same.

When the ultraviolet light emitted by the lamp passes through the water layer, the intensity decreases exponentially as the depth of the water layer increases. In this way, in order to achieve a high disinfection effect in the sterilizer, when calculating the required ultraviolet dose to design the sterilizer, people have to use the ultraviolet radiation dose that the microorganisms in the water layer away from the ultraviolet lamp can obtain to determine the smaller radiation intensity. At the same time, the ultraviolet radiation dose obtained from the water layer between the quartz glass tubes must be higher than the dose required by the microorganisms. The closer the quartz glass tube is, the higher the radiation dose obtained from the water and the greater the energy waste. This is a structural defect of the existing commercial sterilizers.

Precautions for customization of UV sterilizer

Ultraviolet sterilizers have a wide range of uses and are suitable for the disinfection of various water bodies. However, the situation of each water disinfection project is different, including water flow, water quality, disinfection standards, etc. Therefore, sometimes it is necessary to customize the production to meet the disinfection requirements. When customizing the production of UV sterilizers, the following precautions should be paid attention to:

1. Suspended solids, turbidity, organic matter and ammonia nitrogen in sewage will interfere with the transmission of ultraviolet rays, so the relevant influent water quality parameters should be accurately understood when designing. Understand the owner's drainage standards, because different standards have different requirements for fecal and intestinal flora. This has a lot to do with the choice of lamp.

2. Familiar with lamp types (low-voltage lamps, low-voltage high-output lamps, medium-voltage lamps).

3. Understand the owner's requirements and the use of funds, determine the cleaning method of the quartz sleeve and the arrangement of the ballast, because this relates to whether the sleeve is cleaned manually or mechanically (including pure mechanical cleaning and mechanical plus chemical cleaning). In addition, whether the ballast and UV module are arranged separately or in combination determines the type and investment of the disinfection system.

4. The correct control of the disinfection contact time and the drainage flow of the main process directly determines the number of lamps.