Desulfurization is to remove SO2 (sulphur dioxide) from flue gas. Denitrification mainly removes NOx (nitrogen oxides) from flue gas. These two substances enter the atmosphere and form acid rain. Acid rain is very harmful to humans, so now the country It has been advocating environmental protection. The coal-fueled flue gas contains these substances, especially in thermal power plants. At present, the construction of thermal power plants must simultaneously build desulfurization. The denitrification is not yet mandatory. The emission of sulfur dioxide is close to 50% of the total social emissions. The control of sulfur dioxide emissions from coal combustion is the focus of China's sulfur dioxide pollution control. Controlling sulfur dioxide emissions is the main breakthrough to control coal-fired sulfur dioxide pollution.
Tap water treatment
Ozone in the water kills bacteria, viruses and other microorganisms with high rate and speed, and removes pollutants such as organic compounds completely without secondary pollution. Therefore, disinfection of drinking water is the most important part of ozone application, and the tap water industry is ozone. The biggest market. Chlorine disinfection is common in waterworks applications. But ozone kills bacteria more and kills faster. At present, the most important factor in the use of ozone instead of chlorine disinfection is that the traditional use of chlorine disinfection in the United States, Japan and other countries are rapidly developing the main reason for the use of ozone to treat tap water, because the water source is contaminated by organic chemical industry products, chlorine will be produced after disinfection. Chlorinated organic compounds (THM) such as chloroform, bromodichloromethane, and carbon tetrachloride, which are carcinogenic, and oxidation does not produce secondary pollution compounds in ozone treatment.
Sewage treatment includes the treatment of urban sewage, industrial sewage and medical sewage. The main purpose is to sterilize, remove pollutants, decolorize and deodorize to meet emission standards. In recent years, due to lack of water resources, the competent authorities of the industry have formulated regulations on industrial and domestic wastewater reuse and improved treatment standards. Industrial sewage ozone is used to oxidize electroplating cyanide-containing wastewater, decolorize textile printing and dyeing wastewater, and refine sewage to remove phenols and alkanes. The United States, Japan, Germany, France and other countries have established large-scale sewage treatment plants in recent years. For industrial wastewater treatment with phenol, cyanide, organic ammonia, nitrile, nitro dye, organophosphorus, organochlorine compounds, etc. Treating sewage with ozone water can reduce the content of phenol and formaldehyde in water by 98%. When the cyanide-containing aqueous solution is treated with ozone water, the cyanide concentration can be lowered from 15 mg/L to 0.25 mg/L.
There are isolation wards, radiology computer room, ward duty room, dressing room, catering room, patient elevator room, outpatient waiting room, ward corridor and so on. In the case of some people in the ward, the ventilation of the ward is emphasized, especially the ventilation convection that emphasizes natural wind, the exchange of indoor air and outdoor air is maintained, and the adequate ventilation (exhaust fan) must be installed for poor natural ventilation. In the case of no one in the ward, disinfect with ozone gas, not less than 1 hour each time, 2 to 3 times a day.
Ozone is used as a strong oxidant, catalyst and refining agent in the chemical, petroleum, paper, textile and pharmaceutical, and perfume industries.
With the acceleration of China's industrialization process, marine pollution has become increasingly serious. Red tides and viruses have occurred many times in recent years, causing a large number of fish, shrimp and shellfish to die. Marine fishing production has declined rapidly, and at the same time it has brought great technology to the aquaculture industry. Difficulties and operational risks. The use of circulating water treatment technology in developed countries such as Denmark, the United States, and Japan has achieved significant results and huge economic benefits. Suitable for aquaculture, pond culture, factory farming, seedling wintering and live seafood storage and transportation, and has been put into use in Qingdao, Jinzhou and other places, so that China's aquaculture and seedling industry has reached a new level and achieved remarkable economic Benefits and social benefits.