Snowlight sewage treatment germicidal lamp
Recently, the Snow Wright Wastewater Treatment Plant won the nomination for the development and industrialization of special high-power ultraviolet germicidal lamps and supporting electronic ballasts. As early as 2007, Shell Wright developed a high-power water treatment UV lamp and signed it through scientific and technological achievements. This project also filled the gap in the manufacturing technology of domestic high-power low-pressure ultraviolet germicidal lamp, which is at the domestic leading level.
China is a country with a shortage of water resources. The treatment of sewage is urgent. Recently, the outbreak of cyanobacteria in Taihu Lake has sounded the alarm for us! Foreign countries generally use ultraviolet light as the final treatment method without secondary pollution in our sewage treatment, and China has just At the beginning, there is a lot of room for development. China's drinking water treatment still generally uses the most primitive chloride disinfection, while chloride disinfection will leave harmful carcinogenic by-products, forming secondary pollution, UV disinfection does not produce harmful by-products, and can kill Giardia and Cryptosporidium. Protozoa such as insects. At present, drinking water in developed countries has begun to use ultraviolet light + small amount of chloride multi-barrier disinfection methods, such as the Seattle Waterworks, the Rotterdam Water Supply Company in the Netherlands, and the Victoria Water Company in Canada. The principle of ultraviolet disinfection sterilization is to use the energy of ultraviolet photons to destroy the DNA structure of various viruses, bacteria and other pathogenic organisms, so that various viruses, bacteria and other pathogenic organs lose the ability to replicate and reproduce, and achieve the sterilization effect. It is imperative to vigorously promote UV water treatment technology, and it is also an important aspect for us to catch up with the world level. Snow Wright has developed a high-power water treatment UV lamp with the goal of pollution control and the world's blue sky, white clouds and clean water.
It is reported that the high-power ultraviolet germicidal lamp independently researched and developed by Shell is characterized by high UV efficiency, high reliability, long life, fast attenuation of UV light, fast start-up and low operating cost. The basic requirements for the development of UV lamps and associated electronic ballasts are high UV luminous efficiency, high reliability, and long life. The high-power UV germicidal lamps and ballasts developed by Shell Wright not only meet the basic requirements for the development of UV lamps and supporting electronic ballasts, but also have many independent innovations.
(1) Xuelaite researches high-power, high-intensity, long-life ultraviolet germicidal lamps for high-tech drinking water and sewage treatment plants. The power exceeds 55W, the lamp current generally reaches about 1A, and the power density is higher than that of ordinary lamps. Significantly large, reaching 1.2W/cm. The 250W ultraviolet lamp has an illuminance of 496μw/c┫ at 254nm at 1.0m, which is equivalent to the ultraviolet illuminance of 10 40W lamps. The surface ultraviolet illuminance is up to 70,000μw/c┫ (the disinfection time is less than 0.5 seconds under this illuminance) .
(2) At high power density, there is still high UV output efficiency, and it can work reliably and stably under the condition of high wall load (over 100 °C).
(3) Ultraviolet germicidal lamp with indium mesh and suction plate: Unique patented indium mesh and zirconium aluminum getter are installed in the lamp tube, and the special anode shielding shunt can make high-power ultraviolet lamp have good. The starting performance, can extend the life of the lamp and reduce the ultraviolet light decay of the lamp, and better kill the bacteria.
(4) The special high-temperature amalgam and amalgam fixing and placement position ensure that the mercury vapor pressure is always maintained at 0.8Pa when the lamp operating temperature is 80-110 °C, thus ensuring the best UV luminous efficiency. To achieve energy-saving purposes (amalgam is used above 150W, liquid mercury is used below).
The main characteristics of its supporting electronic ballast (1) high power factor: ≥ 0.99; (2) low harmonic: total current distortion ≤ 6%; (3) low current crest factor: 1.42; (4) constant current operation: lamp When the tube voltage changes from 125V to 170V, the lamp current changes from 1.56A to 1.65A, which basically achieves constant current; (5) the filament warm-up time is set to 0.4 seconds; (6) Ballast efficiency: ≥88% (7) Abnormal protection: It has various functions such as open circuit protection, overvoltage protection, and lamp leakage protection.
Shell Wright has also developed specific test standards and methods. Water treatment long-life UV germicidal lamp, its use in water, and the original domestic and international standards for UV lamps are tested in the air, it is obvious that the air and electrical parameters used in the air test are completely inconsistent with of. Snow Wright first proposed that such lamps should be tested in water, and self-made water-irradiation illuminance device for water testing, testing the ultraviolet radiation at 30mm outside the casing as an assessment standard, closer to the actual use, the test equipment is fully capable Guide and verify product performance and ensure product consistency.
It is reported that Snow Wright has compiled the enterprise standard of "Water Treatment High-Power Ultraviolet Sterilization Lamp" and has submitted a draft of the national standard for filing. Snowlight has independently developed a UV germicidal lamp module: high-power UV germicidal lamp + quartz casing + electronic ballast, which has an annual production capacity of 60,000 sets; 12000h life, low UV attenuation, 1/3 import price It can completely replace imported ultraviolet germicidal lamps.
It is the superior characteristics of the snow Wright high-power ultraviolet germicidal lamp. At the appraisal meeting, the experts unanimously passed the appraisal of the scientific and technological achievements of the project, and pointed out that the result fills the blank of the manufacturing technology of the domestic high-power low-pressure ultraviolet germicidal lamp. Being at the domestic leading level is of great significance to the development of China's environmental protection industry and water treatment industry, which will produce good social and economic benefits and have a good market prospect.
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