In 1982, a Canadian company invented the world's first open channel installation of ultraviolet disinfection system 2000, and introduced the concept of modular ultraviolet disinfection system, that is, the ultraviolet system can be composed of several independent ultraviolet lamp modules, and the water flow depends on gravity, not Pumps, pipes and valves are required. System maintenance can be carried out on a single module, and the UV lamp module can be easily taken directly from the open channel for maintenance and inspection. The system does not need to be shut down during the maintenance of the UV aging test equipment. It can continue to operate and disinfect, so there is no need for spare equipment. It is also very convenient. The modular open channel disinfection device greatly reduces the cost of ultraviolet sewage disinfection and makes system maintenance simple and convenient.
At the same time, when the sewage treatment plant is being expanded or renovated, the UV weather resistance test chamber only needs to increase the number of UV lamp modules properly, without the need to purchase a complete system, which can save investment in UV aging test equipment and is very flexible to use. This invention has been welcomed by sewage treatment plants and greatly promoted the application of ultraviolet disinfection technology in urban sewage disinfection treatment. At present, more than 3,000 urban sewage treatment plants have been installed and used in the world. Ultraviolet sewage disinfection systems have been installed, and more than 95% of the systems have adopted the idea of ​​open channel modular ultraviolet systems. These small-scale sewage disinfection systems process thousands of m3 per day, and large ones process millions of m3 per day.
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