Basic knowledge of ozone aging test chamber

Ozone (03) was gradually recognized by people after 1840. Ozone is composed of three oxygen atoms. It has a high oxidation-reduction potential, so it has a strong oxidizing power, which can degrade various impurities in water and kill a variety of pathogenic bacteria, molds, viruses and kill. For example, the larvae of the beetle mollusk (up to 98%) and the aquatic organisms such as the sword leeches, the oligochaetes, the rotifers, etc., and the ozone aging test chamber were thus subjected to the ozone sterilization test in France in 1886. In 1893, the 3 m3/h purification water plant in the Netherlands was put into operation. In 1906, the ozone treatment plant built in Nice, France, was in operation until 1970. The Nice Water Plant is seen as the “birthplace of drinking water ozonation treatment”. In 1908, China installed a German Siemens ozone generator at the Fuzhou Water Plant. Up to now, there have been thousands of ozone-treated water plants in the world. In 1980, Montreal, Canada built a large-scale water plant with a daily supply of 2.3 million tons of ozone-depleting 300 kg/h, and most of them were built in developed countries. There are only a few small-scale applications in the box developing countries. Since the 1980s, a small number of waterworks in China have adopted the ozone method, such as Beijing Tiancun Water Plant (15kg03/h), Kunming Water Plant (33kg03/h), and some industrial and mining enterprises' internal water plants, such as Daqing Oilfield and Shengli Oilfield. The water plants of Yanshan Petrochemical and other units also have ozone equipment in operation. Compared with the scale of foreign countries, China can only say that it is still in its infancy. Ozone aging test chamber

The reason why ozone water treatment has been greatly developed in the world is not only because of its effective ability to remove impurities and sterilizing, but also because it does not produce secondary pollution (residual poison) in water after treatment, and excess ozone will decompose faster. The formation of carcinogens such as chloroamine and chloroform in the ozone aging test chamber for oxygen rather than chlorine is recognized as the safest disinfectant in the world. There is no large-scale promotion in developing countries because the ozone treatment of fixed assets is too high and the operating power consumption is too high. In the countries with insufficient funds, since the mid-1980s, many bottled water plants in China have high requirements for water quality standards. The economic benefit of bottled water is also high, and the ozone treatment is adopted, and the small ozone generator can be promoted on a large scale. Most of the bottled water plants that correctly apply ozone treatment water can meet the international standard of double zero (E. coli, total bacteria are zero). First, several basic factors affecting the sterilization effect of ozone water treatment Because ozone water treatment is a new thing, people are not very familiar with it. Some manufacturers and construction units and ozone users mistakenly believe that as soon as the button is pressed, the ozone gas is blown into the water, and the disinfection is completed. This misunderstanding has made the application of ozone unsuccessful, and even caused some people to doubt the bactericidal ability of ozone itself.

Some manufacturers use a very simple ozone generator to treat bottled water, and they know nothing about the concentration of ozone produced and the concentration of dissolved ozone in the treated water. The exact effect of sterilization in the ozone aging test chamber is unbelievable. Hard to apply. The author also interviewed a mineral water plant with an amount of 5 tons of water per hour. The design unit selected a 100g03/h ozone generator, and the residence time of the water in the contact absorption device was only a few seconds. As a result, the treated water was unqualified. A large amount of ozone exhaust gas overflows in the filling room, and workers cannot work.

There are also some domestic water processors produced by manufacturers, whether it is Wu oxygen concentration or processing time is not enough, such water processor can produce qualified drinking water, it is doubtful.

Therefore, it is extremely important to correctly understand the physical and chemical processes of ozone aging test chambers in water and the biochemical processes of ozone sterilization. Due to the mechanism of the dissolution of ozone in water and the impact of ozone on the exchange of biological cells, this paper cannot be discussed in detail, and only a general discussion on ozone sterilization is made.