First, drinking water treatment
Drinking water for the international standard for the total number of bacteria, the bacteria are zero, the Western European and American countries are the implementation of this standard, so the water supply company's ozone water treatment products are widely used. In China due to the development, economy is relatively backward, national sanitary standard for drinking water to total bacteria count <, < 3 of coliform bacteria, and mostly used in bleaching powder, chlorine and in recent years, the promotion of chlorine dioxide and sodium hypochlorite disinfection equipment. Because chlorine disinfection will produce chlorine derivatives cause two pollution, three of which are direct carcinogenic substances in Europe and the United States drinking water treatment has been gradually eliminated. The price for the current domestic ozone generator, chlorine dioxide, sodium hypochlorite and almost even low prices.
The most extensive and successful field of ozonation applications is the treatment of drinking water. Ozone for drinking water treatment, sterilization effect is good, no secondary pollution, both decolorization, odor removal, removal of iron, manganese, oxidation and decomposition of organic matter and aid to the coagulation effect, some reports pointed out that the ozone disinfection water most of the body of harmful substances. In particular, the recent introduction of the "ozone + biological activated carbon" treatment of drinking water technology, but also to the ozone treatment of drinking water is full of confidence.
With the increase of high-rise buildings, the two water supply is also very common. In 1996 the Ministry of Health issued a document requiring two water supply must be installed disinfection facilities, and some units of their own wells must be in the case of water quality standards to allow the use of. Secondary water supply disinfection and treatment products, currently only in chlorine dioxide, sodium hypochlorite and ozone occurrence equipment selection, ozone in water processing has a strong competitive advantage, should be a mature market, including mineral water, pure water, bottled water is ozone technology products will use the market, leaving the ozone equipment is also very difficult to reach the standard.
Treatment of drinking water in the use of ozone equipment, the amount of ozone dosage should be based on different water quality options, contact time of 10-15 minutes.
Two, swimming pool water treatment
Ozonation technology for swimming pool water treatment technology has been very mature, Europe and the United States and other nations use is widespread, the international competition swimming pool most of the ozone treatment technology, China's swimming pool water standards require total bacteria count <1000 a, < of coliform bacteria, turbidity less than 5. Mainly used at present chlorine, bleaching powder, copper sulfate, and other means of disinfection, water quality standards at the same time, and causing secondary pollution, water quality caused by loud, skin irritation and other consequences, especially the use of liquid chlorine potential threats in large, once the leak will cause large area of toxic contamination, to make people nervous. Ozone technology in water quality standards, no above defects and ozone water can also sterilize bacteria to beauty, more economical is used to reduce or cancel the drug consumption, cost reduction, quality guarantee period can be extended, in line with national building a conservation minded society. < p= >
Three, aquaculture water treatment
Ozonation treatment of aquaculture water, fish, shrimp, crab growth is very favorable, the economic benefits are also very obvious. Aquaculture water because it is rich in organic matter, water quality problems easily, bacteria, viruses and bacteria on propagation of fish and shrimp is also very rampant, in recent years, the coastal area, many ponds bona vacantia and a large number of abandoned is thus formed.
Ozone in the treatment of aquaculture water, besides its sterilization and inhibition of virus and bacteria on fish and shrimp infection, transmission, can also degradation of organic matter, reduce the chemical oxygen demand (COD) and biochemical oxygen demand (BOD), and because of its aid coagulation effect, to improve the water quality is a good measure. In recent years, water pollution is serious, water pollution on fish causing disease and death of large quantities of the common, and ozone degradation of NH3, SO2, and red tide toxins and harmful substances, which shows that the ozone technology in the promotion of aquaculture is very necessary.
Reported that ozone treatment water aquaculture, can the fish ponds to increase more than 30 percent, of shrimp shrimp can be increased by more than 60%, the contrast test of fish, shrimp, crab, the survival rate were increased with the increase of more than 90%, the use of ozone water aquaculture, the general to have caused harm of virus and bacterium in water, ozone is injected into the concentration of 0.5-1.2mg/L it can kill all bacteria in the water, if used as a preventive, 0.5-0.7mg/L is enough.
Four, the treatment of circulating cooling water
Circulating cooling water is very common in industry, such as paper mills, power plants, fertilizer plants, chemical plants, etc.. In recent years, the rise of central air conditioning equipment can not be separated from the circulating water. In recent years, because in the circulating cooling water found a on the human body harm great Gram-negative pathogens, people pay more and more attention to the treatment of circulating cooling water. At the end of the 1970s, the United States a large number of circulating cooling water of the ozone treatment of that ozone has slow corrosion and scale inhibition, sterilization, algae, water, no pollution etc. many advantages, and processing cost is lower than the traditional processing method, so the ozone treatment of circulating cooling water has broad prospects.