1. Principle of Ultraviolet Disinfection Device

According to their biological effects, ultraviolet rays can be divided into UV-A (320-400nm), UV-B (275-320nm), UV-C (200-275nm), and vacuum ultraviolet. In water treatment, the UV-C portion of ultraviolet light is actually used, and the wavelength around 260nm in this band has been proven to have a high sterilization efficiency.
This device integrates optics, microbiology, mechanics, chemistry, electronics, fluid mechanics, and other comprehensive sciences. It uses a specially designed high-efficiency, high-intensity, and long-life UV-C light source to irradiate flowing water. When bacteria, viruses, and other microorganisms in the water are exposed to a certain dose of UV-C light (wavelength 253.7nm), their cellular DNA and structures are destroyed, preventing cell regeneration, thereby achieving water disinfection and purification. The 185nm wavelength line can also decompose organic molecules in water, producing hydroxyl radicals that oxidize organic molecules into carbon dioxide, achieving the removal of TOC.
2. Advantages of Ultraviolet Disinfection Device:
1. High sterilization efficiency: Ultraviolet light can achieve a sterilization rate of 99% to 99.9% within one to two seconds against bacteria and viruses.
2. Broad-spectrum high-efficiency sterilization: Ultraviolet sterilization has a high broad-spectrum effect, efficiently killing almost all bacteria and viruses.
3. No secondary pollution: Ultraviolet sterilization does not add any chemical agents, so it does not cause secondary pollution to the water or surrounding environment. It does not alter any components in the water.
4. Safe and reliable operation: Traditional disinfection technologies such as chlorination or ozone use disinfectants that are toxic and flammable. The ultraviolet disinfection system does not have such safety hazards.
5. Low operation and maintenance costs: Ultraviolet sterilization equipment occupies a small area and requires simple structures, resulting in lower total investment. Operating costs are also low; at the level of treating thousands of tons of water, its cost is only half that of chlorination.

3. Application Fields of Ultraviolet Disinfection Device
Reclaimed water reuse disinfection; Aquaculture processing water disinfection
Secondary water supply disinfection in residential areas; Water disinfection for food and beverage industries
Municipal sewage treatment disinfection; Municipal landscape water disinfection
Disinfection of tap water, purified water, and mineral water plants; Small household drinking water disinfection
Water disinfection for water entertainment facilities (such as swimming pools); Water disinfection for large poultry and livestock breeding
Sterile water disinfection in pharmaceutical and cosmetics manufacturing; Water disinfection for central air conditioning systems in commercial buildings

Notes:

1. The device power supply voltage is 220V/50HZ, and the ultraviolet lamp has a service life of up to 10,000 hours.

2. The equipment provided in this technical parameter sheet is suitable for disinfecting purified water quality, such as tap water, purified water, aquaculture water, food processing water, segregated water supply, and pharmaceutical water.
3. Various advanced online monitoring instruments and remote control systems can be configured according to customer requirements, such as ultraviolet lamp monitoring systems, ultraviolet intensity monitoring systems, water temperature monitoring systems, and disinfection time accumulation systems.
4. Manual or automatic cleaning devices can be configured according to customer needs.
5. Customization can be made according to customer requirements and suggestions.
6. Other ultraviolet disinfection devices include self-cleaning water tank disinfectors, frame ultraviolet disinfectors, combined types, and medium-pressure ultraviolet disinfectors.

 Dirty water enters from the filter inlet, first passing through the coarse filter screen to remove larger particles, then reaching the fine filter screen. During filtration, the fine filter screen gradually accumulates dirt and impurities from the water, forming a filter impurity layer. Because the impurity layer accumulates on the inside of the fine filter screen, a pressure difference forms on the inside and outside of the fine filter screen. When the pressure difference of the self-cleaning filter reaches the preset value, a switch signal is sent to the control box PLC system to start a cleaning cycle. Cleaning process: The cleaning mechanism of the fully automatic negative pressure suction filter is a stainless steel spiral up-and-down moving suction scanner. It is hollow in structure, with several suction nozzles vertically distributed at certain distances along its axis. The inside of the suction scanner communicates with the 3” drain valve. When the drain valve opens, the pressure difference between the internal water pressure of the filter and the external atmospheric pressure generates strong suction at each suction nozzle. At each suction nozzle, water flows rapidly from outside to inside in reverse, washing impurities attached to the inner wall of the filter screen into the suction nozzle, through the hollow shaft of the suction scanner, then discharged through the drain valve, completing the cleaning process which takes about 30-60 seconds. At this time, the pressure difference returns to normal, the cleaning process ends, and filtration resumes. During cleaning, the system continues to flow.