New standard disinfection process perfect, the drinking water standard

Drinking water disinfection technology is closely related to people's lives, study new technology and application characteristics of disinfection, carry out safe, reasonable, environmental protection, economic and effective disinfection technology, reach the purpose of ensuring public health is very necessary. Recently, there are media reports that the percent of pass is only fifty percent or so of tap water, the main reason is that, water pollution and sewage treatment plant process is relatively backward. Relevant experts said, completely solve the problem of water pollution takes 15 to 20 years, visible, with water as the core standard, the different target classification management for water source, to reduce the generation of toxic and harmful substances at the source at the same time, the new national standard of microbial indicators, priority should also be the traditional purification disinfection process of municipal water supply in cities and towns to improve.

with the July 1 gb 'drinking water health standards' ( GB5749- 2006). The compulsory execution, public calls for water quality standards in line with international standards is becoming more and more high. New gb relative now compared to the 1985 version, strengthened to water quality of organic matter, microorganism and disinfection by-products such as requirements. Index number up to 106, including six measures of microorganism, this with one of the world's most strict quality standards - — The European Union water quality standards.

as essential to urban water supply system and water treatment process, the main method by chlorine disinfection and chlorine dioxide disinfection disinfection disinfection and uv sterilizer. Respectively introduce three kinds of disinfection techniques below:

1, the traditional chlorine disinfection is the most widely used in drinking water disinfection, the most mature technology, adding the disinfectant for sodium hypochlorite, bleaching powder, liquid chlorine, disinfection mechanism are basically the same, mainly by hydrolyzate hypochlorous acid. Chlorine disinfection has the advantages of mature technology, cheap, have continuous sterilization ability, but in recent years, with the improvement of people's health consciousness, the side effects of chlorine disinfection has gradually come out, found that chlorine disinfection can produce three to content, its place in the disinfection industry has shaken, but chlorine disinfection is the main approach to disinfect or some less developed areas.

2, chlorine dioxide disinfection of sterilizer is after chlorine disinfection safety problem has emerged, a way of disinfection is widely touted, chlorine dioxide creatures after ozone sterilization ability, and the formation of chloroform and so on harmful material ability is relatively weak, the chlorine dioxide disinfection is widely considered high cost performance of disinfection way, now in North America, there are more than 600 free water in the use of this kind of disinfection, it promoted in our country is an inevitable trend.

3, ultraviolet disinfection is now more popular disinfection process, it is first used in the United States, is now in general use in the United States and Canada, it has high disinfection efficiency, time is short, no secondary pollution, etc, it is worth mentioning that the new national standard of microbial indicators of drinking water often occurs in the 'two', namely the first giardia cryptosporidium and jia a clear stipulation, and these two kinds of microbes has a strong resistance to chlorine, traditional chlorine disinfection effect of killing them was not significant, visible, in drinking water disinfection process, adopt new technology or partly instead of the traditional process method is imperative.

according to preliminary statistics, more than 90% in domestic has built sewage treatment plants installed disinfection facilities. The early construction of sewage treatment plants mostly adopt the way of chlorine disinfection. Ultraviolet disinfection equipment in quality, function, performance and the ease of operation have a higher score, the user to its evaluation is that easy to get started, tube and durable. Disinfection equipment industry still has a large rise space, various water treatment equipment manufacturers or discipline, authenticity is responsible for the market, and responsible attitude to customers, increase the intensity of research and development, to produce more perfect disinfection equipment.