Is the water purifier used in the end? Worth loading?
When it comes to water, many people don’t agree. I always say that there is no problem with water. People in a previous life have been drinking water like this. Why did we use a hot sale water purifier when we arrived in our generation? Then I will ask you, did they have fertilizer, herbicides, and pesticides in those days? How high is their food production? You may say that these are not the main problems. The problem is that water can still be drunk. If you can’t drink, the country should take care of it. Then I will tell you that you can drink, but you will get various diseases. You have not found these. Are there more and more cancers in rural areas? Are you getting younger? why? Because of the water and air, we drink have changed.
Two major sources of pollution
In the past 20 years of reform and opening-up, China’s economy has developed rapidly, but environmental pollution has become increasingly serious, especially drinking water pollution. According to the statistics of the national environmental department, 82% of the rivers in China are polluted to varying degrees; among the seven major river systems in China, the river section that is not suitable for drinking water sources is close to 40%; 78% of the rivers in urban waters are not suitable for drinking water sources. About 50% of urban groundwater is contaminated. At present, China’s waterworks still adopts traditional treatment processes, which cannot effectively remove trace contaminants in the dissolved state, especially organic pollutants, causing some harmful substances, including carcinogenic, teratogenic, mutagenic and other trace organic substances to remain in drinking water. in. According to the statistics of the Institute of Environmental Health Inspection of the Chinese Academy of Preventive Medicine (1997), according to China’s current standard of drinking water hygiene (the standard is only equivalent to the level of the developed countries in the 1970s), 76.1% of the population in China does not meet the hygiene standards. Water, the toxicological indicators exceeding 3% are Fe, Mn, fluoride, nitrate, sulfate and so on. Endemic diseases caused by drinking water are often reported in China. It is worth noting that in recent years, research on the poisoning of drinking water has been strengthened. More than 10,000 kinds of chemicals have been detected in water, and there are more than 100 kinds of carcinogenic and carcinogenic substances. Drinking water pollution has become a global public hazard.
According to a World Health Organization (WHO) survey, 80% of diseases worldwide and 50% of child deaths are associated with poor drinking water quality. More than 50 kinds of digestive diseases, infectious diseases, various skin diseases, diabetes, cancer, stone disease, cardiovascular disease, etc. due to poor drinking water quality; 50 million children die every year due to water pollution, 35 million people with cardiovascular disease, 70 million people suffer from stone disease, 90 million people suffer from hepatitis, and 30 million die from liver cancer and stomach cancer.
The hazards caused by water pollution mainly include the following aspects:
1) The water body is contaminated by pathogenic microorganisms, which can cause various infectious diseases such as cholera and typhoid fever.
2) Water bodies are contaminated by harmful organic substances (such as phenol, benzene, chloroform, carbon tetrachloride, pesticides, synthetic laundry detergents, etc.), causing various poisoning and diseases.
3) The water body is contaminated by heavy metals (Hg, Pb, Cu, etc.) and other inorganic poisons (chloride, arsenide, nitrite, etc.), causing various poisoning.
Purify water quality
So how do you improve water quality and improve water retention? The ways to improve water quality are generally:
1) Water source protection;
2) Water plant renovation;
3) Pipeline water supply;
4) Water purification of the pipe network terminal.
The protection of water sources or the renovation of waterworks can improve the quality of tap water to a certain extent, but it cannot solve the problem fundamentally, especially the secondary pollution of pipelines. Judging from China’s current national conditions, it is foreseeable that the renewal of equipment and technology in the waterworks and the overall renovation of the water pipe network will be difficult to achieve in 10-20 years.
Even with the use of pipelines for water supply, there are many problems in terms of project cost, design and construction, management and maintenance, water fee collection, health indicators, and safety level, and it only solves the problem of drinking water and cannot meet the full range of water consumption of households. Demand, no matter economically or in use, can not bring real benefits to consumers. On the other hand, the pipeline water supply can only be used for new construction. For a large number of existing residences, the water pollution problem cannot be solved due to the re-laying of the pipeline.
According to the International Health Organization study, the most effective way to enjoy healthy water is to install a water purifier at the end of the municipal water supply network, that is, the household water terminal, which can fundamentally solve the secondary pollution problem of the water pipeline, and through the depth of the terminal. The treatment is supplementing and perfecting the urban tap water treatment process so that the water quality of the tap water is greatly improved as a whole, which not only meets the needs of household drinking water but also satisfies the needs of household consumption, bathing, washing and the like in all aspects. From the engineering point of view, whether it is cost, construction difficulty, management and maintenance, use cost, health indicators, and safety level, the use of household terminal water purifier is the best choice to solve water pollution. Even in western developed countries where tap water can be drunk, 70% of households have installed household terminal water purifiers to avoid secondary pollution of the pipeline network.
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