According to the investigation of authoritative organizations, among the washing machines used for more than half a year, 60.2% can detect mold inside, so the washing machine has become the source of "secondary pollution". The mold bred in the inner tube will not only pollute clothes, but also cause various diseases through contact with different parts of the human body.
Pollution does harm to health. Air pollution and water pollution caused by household appliances are very common in our lives and do great harm to health. "Epidemiological surveys and studies show that indoor air pollution is closely related to respiratory diseases, cardiovascular diseases, weakened lung function, asthma and other diseases, and it will also increase morbidity and mortality." Associate Professor Zhao Bin said.
The "secondary pollution" caused by air conditioning often leads to dizziness, coma and even decreased immunity. The medical community calls this pathological reaction "air conditioning syndrome". The biggest victims of indoor air pollution are children, pregnant women, the elderly and patients with chronic diseases, especially children are more susceptible to indoor pollution than adults. Children's bodies are growing, and their breathing ability is nearly higher than that of adults 1/2. Moreover, they live indoors most of the time, so pollution damage is not easy to find, and the problems found are irreparable.
After the washing machine breeds mold, it is easy to pollute clothes. Not only can clothes not be washed clean, but they may also cause diseases. Especially after the close-fitting clothes are contaminated by mold, it may also cause relatively bad harm to women's personal health. According to reports, although there is no clear data showing the connection between gynecological diseases and the "secondary pollution" of washing machines, many gynecologists often encounter some innocent women suffering from fungal vaginitis in the daily outpatient service of hospitals, and we can't help but think of the "secondary pollution" of washing machines. The harm of "secondary pollution" of drinking fountains is more obvious. After drinking polluted water that breeds bacteria, the harm to human body is very obvious, and people are easily infected with various diseases. How to deal with the problem of "secondary pollution" of air conditioners reflected by consumers, Professor Zhu of Tsinghua University Institute of Building Environment and Equipment pointed out: "The dust accumulated in the filter of the return air outlet of household air conditioners enters the air or air conditioners again, which breeds mold and pollutes the indoor environment; The air conditioner breeds mold and smells bad. The solution to dust accumulation is that users regularly clean the filter screen, once a month as far as possible, and it is also convenient to disassemble and clean it themselves; For mold, users can't clean it themselves, so they can only ask the after-sales service unit to clean it. "
"For ordinary people, it is necessary to develop reasonable and correct habits at present." Associate Professor Zhao Bin said that it is best to place the washing machine in a well-ventilated and bright place. Secondly, underwear and coats are washed separately to reduce cross-contamination of clothes; Finally, after washing clothes, open the lid of the washing machine, ventilate for a period of time, and keep it dry to promote the volatilization of residual water and inhibit the growth of microorganisms. In addition, the clothes should be taken out to dry immediately, and don't stay inside. If conditions permit, the washing machine can be cleaned regularly after 3 months or half a year; Drinking fountains should be cleaned regularly to ensure the use of good quality water and avoid long-term storage without drinking; For humidifiers and purifiers, regular cleaning is also essential. At present, China's drinking water has been seriously polluted, mainly from water source pollution and secondary pollution. With the untreated discharge of a large number of industrial wastes, agricultural pollutants and domestic pollutants, the pollution of groundwater and surface water in China is becoming more and more serious, resulting in water pollution in drinking water sources. According to the investigation of the Ministry of Water Resources, in 2005, the total amount of sewage and wastewater discharged in China reached 710.70 billion tons, of which 2/3 were directly discharged into water bodies without treatment, resulting in 90% of urban surface water being polluted to varying degrees. According to the Environmental Quality Announcement of China issued by the State Environmental Protection Administration, 59% of the seven major water systems in China are not suitable as drinking water sources.
Because the equipment and technology of waterworks in China are relatively backward, the conventional coagulation and sedimentation, coarse filtration and chlorination treatment processes can no longer meet the requirements. In May, 2007, the most serious cyanobacteria incident broke out in Wuxi, Jiangsu Province, and the tap water from the faucet was smelly, which fully proved this point. At the same time, the secondary pollution of tap water pipe network is inevitable. Due to the disrepair of the pipe network, the sanitary management and maintenance of water supply facilities such as pipe network and water storage tank are not in place, and red water, black water and white turbid water appear from time to time. There are more and more sediments in the water distribution network, because biological pollution breeds bacteria, viruses, even red worms and leeches, which makes the water quality safety of terminal tap water not guaranteed. Secondary pollution of drinking water
1. Water storage tanks in high-rise buildings are breeding grounds for bacteria and moss.
In addition, rusty water pipes are also one of the main causes of pollution.
Pollutants in water are mainly divided into the following categories:
1, solid suspended matter: sediment, rust, visible to the naked eye.
2. Microorganisms: bacteria, viruses, algae, etc.
3. Dissolved inorganic substances: calcium carbonate, magnesium carbonate, copper sulfate, chloride and nitrate.
4. Heavy metals: mercury, arsenic, lead, cadmium, chromium, etc.
5. Organic matter: pesticides, fertilizers, various industrial solvents, dyes, detergents and disinfectants.
6. Radioactive particles: According to the statistics of the World Health Organization (WHO), 80% of the global diseases and more than 1/3 of the deaths directly come from unclean drinking water. About 50% of the180 thousand children who die every year are related to drinking water pollution. It is estimated that in ten years, on average, about 6,000 children and adults will die from unclean drinking water every day. Long-term use of unclean water will lead to digestive system diseases, infectious diseases, various skin diseases, diabetes, cancer, lithiasis, cardiovascular diseases and other diseases, which are harmful to human health.
For example, mycobacterium tuberculosis in water can cause tuberculosis, rotavirus and gastrointestinal virus can cause gastroenteritis, cryptosporidium can cause cryptosporidiosis, and algae can produce microcystins, which can cause poisoning after drinking, which can cause gastroenteritis in light cases and death in severe cases. In addition, all kinds of organic pesticides containing chlorine or phosphorus have carcinogenic effects, which can cause esophageal cancer, gastric cancer, liver cancer, blood tumor and so on. And various halogenated organic compounds have carcinogenic, teratogenic and mutagenic effects, which pose a very serious threat to human health. Provisions of Water Pollution Prevention Law on Drinking Water:
People's governments at or above the provincial level may demarcate drinking water surface water source protection areas according to law. The surface water source protection areas for domestic drinking water are divided into first-class protection areas and other grade protection areas. Near the surface water intake of domestic drinking water, a certain water area and land area can be designated as the first-class protected area. In addition to the first-class surface water source protection zone for domestic drinking water, certain water areas and land areas can be designated as other levels of protection zones. Protected areas at all levels should have clear geographical boundaries.
It is forbidden to discharge sewage into the water body of the first-class surface water source protection zone for domestic drinking water.
It is forbidden to engage in tourism, swimming and other activities that may pollute drinking water bodies in the first-class protected areas of drinking water surface sources.
It is forbidden to build or expand construction projects unrelated to water supply facilities and water source protection in the first-class protection zone of drinking water surface water sources.
The sewage outlets that have been set up in the first-class surface water source protection zone for domestic drinking water shall be ordered to be dismantled or treated within a time limit by the people's governments at or above the county level in accordance with the authority prescribed by the State Council.