The key points to note during the operation of ultraviolet sterilizers for sewage treatment are:

(1) UV disinfection is not as effective as residual chlorine, so the water after disinfection needs to be managed to prevent further contamination.

(2) When using ultraviolet mercury lamps for disinfection, there must be a stable time of 5-15 minutes after the lamp tube is ignited.

(3) Electrical measures should be taken to ensure the rated power and voltage stability of the lamp tube, otherwise insufficient ignition power will affect the sterilization effect.

(4) The equipment and management of ultraviolet disinfection are relatively simple, but currently the promotion and application are limited due to the short service life and high price of lamp tubes.

Advantages of UV sterilizers for sewage treatment:

1. Efficient and rapid sterilization. The sterilization efficiency of disinfection technology can reach 90% within a certain period of time.

2. Efficient and broad-spectrum sterilization. Ultraviolet technology has a high broad-spectrum bactericidal effect in current disinfection techniques. It can efficiently kill almost all kinds of bacteria and viruses.

3. No secondary pollution. Due to the fact that ultraviolet technology can be controlled solely for sterilization and without the addition of chemical agents, it will not cause secondary pollution to water bodies and the surrounding environment.

4. Safe and reliable operation. Modern ultraviolet disinfection systems do not have such safety hazards and are a much safer and more reliable disinfection technology for the surrounding environment and operators.

5. Low operation and maintenance costs. Due to the improvement of technology, medium voltage ultraviolet disinfection technology not only has the highest disinfection efficiency among all disinfection methods, but also has simple operation and maintenance, and low operating costs.

6. Easy to install and operate. The ultraviolet disinfection system is designed with modularity, easy to install, and can adapt to various installation site conditions without damaging the equipment, pipelines, and building structures on site.

7. Small footprint and no noise. The sewage treatment ultraviolet sterilizer that can process 10000 tons of clean water per day only requires 4 square meters of operating space, and the medium pressure ultraviolet disinfection system that can process 50000 tons of sewage per day only requires one (10 meters x 2 meters) water channel.

8. Continuous high water disinfection. At present, ultraviolet disinfection technology has reached a daily processing capacity of 1.5 million tons of water in practical applications, and can be even larger if needed, which is difficult to achieve with chlorine addition and dechlorination and ozone disinfection methods.

9. Widely applicable in various fields. The ultraviolet sterilizer for sewage treatment can be widely used in various water bodies (such as purified water, sewage, seawater, etc.) and air disinfection fields, suitable for the disinfection requirements of various industries.