"Air purifier, mask..." Haze weather in serious pollution and inconvenience at the same time, also makes some industries to benefit. Today, the benefit from the list is likely to increase an industry: drinking water treatment. Learned, fog weather, a lot of PM2.5 particles suspended in the air, such as after a rainfall process, such as these particles there are quite a part of the rich in heavy metals will be settling into the soil and rivers and lakes, and then into the earth’s water cycle system. It poses a direct threat to people’s drinking water safety. The reporter understands, with frequent fog haze weather, the people’s attention to the safety of drinking water are also rising. Affected, under the impetus of the "haze business opportunities", a "revolution" is likely to be in the drinking water industry.
Heavy metal pollution threat to drinking water sources
"Fog haze threat to drinking water safety is not a joke, but the real facts." Environmental experts say, due to the fog of PM2.5 particles such as light weight, suspended in the air, it is hard to fall to the ground, they needed a precipitation of rain and snow outside. Precipitation, of course, to achieve a certain level, moderate rain or heavy rain can constitute "purification" effect. The rain and snow is for fog provides an opportunity to "hydration", particles will settle into the soil and rivers and lakes, into the earth’s water cycle system. The reporter understands, such as PM2.5 particles tend to carry heavy metal elements in the process of formation, when the heavy metal elements with haze after entering the water, will cause pollution to water.
Haze pollution is just one aspect of heavy metal pollution of the water body. Generally speaking, the heavy metal pollution refers to the environmental pollution caused by heavy metals and their compounds, general with natural concentration of heavy metals are widely exist in nature, but as a result of human on heavy metal mining, smelting, processing and commercial manufacturing activity increasing, caused a lot of heavy metals into the atmosphere, water, soil, cause serious environmental pollution. And food and drinking water is the main way of violations of the human body of heavy metals, because of the heavy metal pollutants in the environment are difficult to degrade, accumulation in plants and animals, and through the food chain gradually enrichment, concentration can be thousands or even millions of times more, finally enters the body, is one of the biggest pollution harm mankind. In recent years, with industrial rapid economic development in our country, all kinds of industrial liquid waste discharged into water bodies, all kinds of heavy metal pollution in water body has become increasingly intensified, already pose a threat to people’s life and health.
In endanger human body health of heavy metals, mercury, arsenic, chromium can cause diseases of the nervous system, and the effect that cause cancer. For iron manganese ion, just the right amount of biochemical reactions catalyzed iron with high biological activity and capacity, main participate in the transport of oxygen, the amount of manganese plays an activating role in a variety of enzymes, on bone, fat metabolism and reproductive function plays an important role. However, excessive water fe mn would result in higher chroma, and cause harm, such as drinking high manganese water can make the person chronic poisoning. Therefore, our country "drinking water health standard" (GB5749-2006) regulation: the quality of the iron, manganese concentration should be controlled respectively under 0.3 and 0.1 mg/L, the other water containing organic matter in the traditional processing technology, easy to produce carcinogens. Therefore, remove these pollutants in water is the very important task.
Water treatment technology to "upgrade"
It is understood that the pipeline water widely used in the developed countries, mainly through the central concentration after purification treatment, in the form of a pipeline to the residential areas, and all enterprises and institutions, schools, etc., the water quality security is clean, can achieve straight drinking water standards. Due to restricted by urban pipeline reconstruction levels, China’s urban water supply can only rely mainly on local, respectively, the means of processing, and combining with the building of a new focus to the central water purification machine pipeline direct drinking water system, to achieve water pipelining, scientization.
With frequent fog haze weather, the people’s attention to environmental protection, at the same time some business opportunities related to environmental protection. Beneficiaries could be the next "drinking water treatment industry. At present, most domestic tap water treatment system are still in use in the 19th century the traditional coagulation - sedimentation - filter - disinfection purification process, this process can effectively remove clean water in the water suspended solids, colloidal substances, bacteria and escherichia coli, etc, especially for a large number of organic pollutants, dissolving organic matter as a result, urban water supply quality is poor, high organic matter content of the senses. The traditional water purification process has two fatal weakness: one is not effective removal of industrial pollution caused by all kinds of complex disease or carcinogens. Second, the disinfectant chlorine and organic matter in water to produce greater toxicity of disinfection by-products.
In addition, with the progress of science and technology and the improvement of material life, people in the understanding of drinking water as well as a new standard to the requirement of water quality: the first is harmless, second is good. People have been from pure physical demand for drinking water necessary to the health health and safety XiangShouXing shift. Thus ensure the quality of drinking water, control the poisonous and harmful substances in water, supply to people health, healthy drinking water has become an important task of water supply industry in our country, in this case, the original water treatment technology to "upgrade".
New technology to help families safe water to drink
Health experts said that the ideal high quality drinking water should be to maximize the removal of toxic and harmful substances in raw water, at the same time retain trace elements beneficial to human body in the raw water of safe drinking water and minerals. He said that in recent years, our country has gone from major cities, including Beijing, set out to consider adopting is known as the "water treatment technology in the 21st century" reverse osmosis (RO) membrane separation technology, in the ability to keep some minerals and trace elements, on the basis of the RO membrane technology to become high quality drinking water purification technology to promote the study hotspot.
Learned, represented by polymer separation membrane membrane separation technology as a new type of fluid separation unit operation technology, made a remarkable huge development for nearly 30 years. According to literatures estimate, today’s separation membrane world market scale has reached billions of dollars a year. In the late 1970 s, China began to reverse osmosis application as early as more than limited to electronics, semiconductor industry, since the 80 s gradually extended to the electric power and other industries, in the 90 s in gaining popularity in water treatment, drinking pure water reverse osmosis has entered into the family, now in recent 10 years is reverse osmosis application high stage of development.