1. Foreign ozone technology companies

      Representative companies in developed countries include:

American PCI company, the world's largest ozone company, has a relatively complete product range, focusing on large-scale equipment. The maximum installed ozone capacity of water treatment equipment is 450kg ∕ H.

      YANCO Industry Co., Ltd. of Canada, mainly produces medical ozone machines, with a host of US$1600~3000. At the same time provide various supporting products such as smelly fan, shower head, sauna box, ozone oil and so on.

      The American Sapphire Technology Company, established more than ten years ago, produces small water treatment equipment.

      American CYCIopss Fabric System Company, which produces large-scale ozone washing machines, has recently entered the Japanese market.

      Canadian Cystalair air quality control company mainly produces ozone generators used in agriculture and food industries.

      American ozonet company produces drinking water treatment, swimming pool water treatment equipment and other products.

      Nevada environmental protection company produces water treatment systems, mobile water treatment equipment, and sewage treatment equipment.

      American Jacuzzi company produces hot spring disinfection and purification equipment and ozone generators.

      American Hankin Company, which started in 1954, produces various ozone generators for bottled water treatment such as mineral water, cooling tower water treatment, drinking water treatment, etc.

(1) Drinking water treatment

      United States: Used in 1900. In 1986, according to the US.EPA law, the drinking water treatment method, which was the main method, was gradually changed to ozone treatment. The generator is mainly produced in the country. In the 1980s, there were more than 10 water plants, 150 in 1995, 200 in 1997, and more than 500 in 2004.

      Canada: Used in 1954. Increased in the 1960s and 1970s, the generators were made in France.

      United Kingdom: From 1967 to 1987, less than 8 water plants were used in 20 years, and the number has increased to more than 150 since the 1990s. Most of the generator imports.

      Germany: Mass use began after 1964. By 1963, only 35 were in use, 159 in 64-68, 508 in 69-79, and 750 in 1980s.

      Japan: It was used before the war. Imported equipment was still used before the 1970s. After that, almost 100% of domestic equipment was used. Now the water treatment plant uses half the ratio.

      Poland: In 1950, equipment was introduced from West Germany and used. Since 1989, drinking water plants have extensively used ozone treatment. Among them, the use of 10 kg class is 50%, the use of 4~5 kg class is 20%, and the remaining users mostly use 1.5 kg class.

      Switzerland: Used since 1940. The characteristics are mainly equipment using liquid oxygen as raw material.

(2) Swimming pool water treatment

      United States: more than 500,000

      Europe: commonly used

      China: Guangzhou Tianhe Swimming Hall, Beijing Asian Games Village Yingdong Swimming Hall, etc.

(3) Food industry

      In 1904, there were reports of using ozone to preserve milk, meat products, cheese, protein and other foods abroad. In 1909, the De Pigne Refrigeration Plant in France officially used ozone to sterilize the surface of frozen meat. In the 1930s, 80% of refrigerated egg warehouses in the United States were equipped with ozone generators, which increased the storage period of eggs. After World War II, European countries developed ozone generators for disinfection, mildew prevention, and freshness preservation in food cold storage of ocean-going ships. By the mid-1980s, food vessels, including my country, were equipped with ozone equipment, which has now been extended to food containers and food refrigerated vehicles.

(4) Medical

     Ozone therapy originated in Germany in the 1940s and gained government support in Cuba in the 1980s. Now, in Cuba, Germany, Russia, the United States, Italy and other countries, ozone has been widely used in daily medical care; in Germany, about 8,000 hospitals or clinics use ozone therapy; all states in the United States have ozone clinics. At present, ozone therapy has developed into more than ancient ways, such as blood oxygen infusion, intramuscular injection, auto-blood reinfusion, rectal insufflation, oxygen inhalation, ozone bath, etc., which can treat asthma, AIDS, allergies, arthritis, blood diseases, and liver cirrhosis. , Thrombosis, stomatitis and various ulcers and other dozens of diseases.

(5) Air deodorization and mildew proof

      In developed countries, it is widely used for air purification and deodorization in hotels, offices, toilets and other places.

      At present, the new foreign ozone technology products mainly include:

      Tap water treatment system; portable water treatment system; sewage treatment system (ozone treatment as one of the processes); various types of ozone machines; mineral water treatment systems; ozone deodorizing devices; large ozone washing machines; ozone deodorizing refrigerators; medical ozone machines And its affiliated new products; ozone purifier for swimming pool; ozone waste tire treatment equipment.

      From the perspective of the new product structure, foreign products focus on drinking water purification systems, larger ozone generators (a few hundred milligrams to 300kg ∕ H), medical ozone generators and auxiliary equipment, air purifiers, etc. Mainly oriented to water plants, swimming pools, hotels, hospitals and other markets.

In terms of technical characteristics, some foreign products still use ultraviolet radiation for ozone generators, but the mainstream and development trend of products is to use high-frequency and high-voltage corona. Foreign products also pay more attention to the treatment of excess ozone in the design, because the high ozone concentration in the air has a certain stimulating effect on the human respiratory system on the one hand, and has a greater impact on the service life of some indoor appliances and electronic products on the other hand.

      In addition, the ozone application technology in the fields of water purification, air purification, medical treatment, and refrigeration abroad is relatively mature. Currently, the areas where research is relatively active are industrial wastewater treatment technology, breeding, agriculture, and medical treatment.