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ozone Application in Pure water treatment

Author：www.dahuan.net Views：date：2018-11-22 10:38

At present, ozone is commonly used in purified water, spring water, mineral water and underground water processing. And CT=1.6 is often applied to tap water treatment (C means dissolved ozone concentration 0.4mg/L, T means ozone retention time 4 minutes).

Drinking water treated with ozone kills or inactivates pathogenic microorganisms including viruses, bacteria, and parasites and removes inorganic trace contaminants found in water systems due to pollution. Ozone treatment also reduces naturally occurring organic compounds such as humic acid and algal metabolites. Surface waters, including lakes and rivers, generally contain higher levels of microorganisms. Therefore, they are more prone to contamination than groundwater and require different treatment regimes.

At present, ozone disinfection has been widely used in the world, pure water, natural water (spring water, mineral water, groundwater, etc.). In the tap water ozone purification application, the international conventional standard has a solubility value of 0.4 mg/L for 4 minutes, that is, a CT value of 1.6.

Most of the microorganisms have been removed during the water treatment process, but even when the water is treated by microfiltration or ultrafiltration, the bacterial substances in the water cannot be completely removed. The general water treatment method can not remove microorganisms. In order to ensure that the product is qualified during the warranty period and to ensure the health of the consumer, the water must be disinfected when manufacturing beverages, especially carbonated beverages, mineral water, purified water, and juice beverages that are not resterilized after packaging. And pay attention to the sanitary state of storage tanks, pipelines, valves, etc., to prevent secondary pollution to water.

The purpose of water disinfection is to kill pathogenic bacteria in the water and to make the bacteria content in the water meet the prescribed standards.

Ozone has stronger oxidative disinfection ability than chlorine. It can not only completely disinfect and disinfect, but also degrade harmful components contained in water and remove heavy metal ions and various organic substances such as iron, manganese, sulfide, benzene, phenol, Organic phosphorus, organic chlorine, cyanide, etc., can also deodorize and decolorize water to achieve the purpose of purifying water. Ozone has strong adaptability and is less affected by water temperature and pH. Ozone adapts to a wide range, is not limited by strains, and the sterilization effect is better than chlorine disinfection and UV disinfection. Unlike chlorine, residual ozone can be decomposed into oxygen by itself without secondary pollution. The water after ozone treatment is colorless and odorless, and has a good taste and can improve the quality of drinking water.

Therefore, in order to improve the quality of bottled drinking water and extend the shelf life, the International Bottled Water Association (IBWA) recommends ozone treatment. Before ozone treatment, bottled water is generally used to remove 99% of organic matter in natural water by reverse osmosis, nanofiltration, and ultrafiltration to reduce the amount of ozone.

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