Microwave electrodeless ultraviolet sterilization equipment The process has many advantages, but it also has defects. The main defect is that it does not have the ability to maintain the continuous disinfection of the pipe network. There is a certain difference between Europe and North America in the use of ultraviolet disinfection skills. In some water plants in Europe, such as the Netherlands, Austria and Germany, drinking water directly enters the water supply pipe network after ultraviolet disinfection, According to statistics, most water plants in the Netherlands use ultraviolet disinfection alone, and there is no residual chlorine at the end of the pipe network. The reason is that the pipe network in Europe is in good condition, the pipe network system is relatively small, and the bioassimilable organic carbon in the water is low. In order to prevent residual chlorine from producing disinfection by-products in the pipe network, ultraviolet disinfection is often used alone, Another reason is that these European countries are usually in higher latitudes. The water temperature is low all year round, and the microbial regrowth in the pipe network is weak. However, the relevant regulations of drinking water in North America stipulate that a certain amount of residual chlorine is necessary in the tap water to control the secondary pollution of the pipe network. The situation in China is more similar to that in the United States, where the bioassimilable organic carbon (AOC) is less than 20 μ At g/L, no chlorine can be added after ultraviolet ray, and AOC is at 50 μ The residual chlorine shall be kept above 0.3mg/L when the concentration is above g/L.
microwave Electrodeless ultraviolet sterilization equipment The domestic municipal water supply system using surface water source has a high organic content in the water, so ultraviolet rays need to be combined with chlorine and chloramine to ensure the microbial safety of the water quality of the pipe network. However, small-scale water supply systems in villages and towns using groundwater may completely use ultraviolet rays for disinfection, especially in areas with low water temperature in the north, provided that the planning and equipment must be qualified. The research results of the 11th Five Year Plan for Science and Technology Support also fully prove this. The original imported ultraviolet lamps from the United States and Europe use compressed air driven mechanical active cleaning equipment to supply low-pressure high-strength lamps, mercury level lamps Medium pressure lamp optional cleaning equipment and ultraviolet light intensity detector are linked. The lamp life is 12000-18000 hours and the lamp replacement cost is lower. Manual or active operation is optional.