Water Industry Advanced Technology Forum is concerned about drinking water treatment – drinking water, water – water industries
China's water scarcity, per capita water share is much lower than the world average, and serious pollution, water quality has a bearing on human survival, coupled with the discovery of water disinfection by-products, has aroused general concern Therefore, the development of drinking water purification technology is imperative. But some foreign experience is only suitable for the local water, and some more complex process, expensive, not suitable for China's national conditions, it is not borrowed their copy, should sum up the identification.
Water network in China, Tsinghua University Environment Science and Engineering, 2010, organized by the water industry in the High Technology Forum held on June 11-12, third in the past, as the organizers set up carefully the contents of the forum, "drinking water treatment and water plants provide standard transformation unit "is one of the major theme. Environmental Science and Engineering, Tsinghua University, Professor Liu Wenjun, vice president of Shanghai Municipal Engineering Design Institute has identified industrial Ru-Hwa Wang and so on will be an important element in this statement, they will have drinking water ozone Activated Carbon Summary of the depth of treatment works, and upgrade water plant process engineering case studies.
Drinking water purification technology and engineering facilities, and water pollution and human diseases caused by the long struggle to produce made and developed, the development of the revolution known as drinking water. Review in the UK from 1804 Paisley (Paisley) into the world's first slow sand filter for a city water plant has 190 years, the water revolution can be divided into two significantly different stages.
The first stage: the 19th century, some European and American countries due to discharge Sewage , Feces and garbage to the contamination of surface and groundwater, causing cholera, dysentery, typhoid and other water-borne diseases outbreak and spread of many large-scale, claimed thousands of lives. These painful lessons in the drinking water for the first phase of the revolution. From the early 19th century 20th century 60s, the purification of drinking water mainly to remove the turbidity of raw water and kill water-borne pathogens for the purpose of processing of their representatives is sand filter coagulation chlorine disinfection, said Water Purification Technology for the ordinary. It basically eliminates the outbreak of water-borne diseases.
Phase II: 60 years since the 20th century, along with the rapid industrial and urban development, drinking water not only by a growing number of urban sewage and industrial wastewater and other point sources of pollution, but also be more difficult to control non-point sources of pollution is difficult to bring in water or non-biodegradable organic matter. For example, the United States Environmental protection Board of tap water out from the 154 species in 80% of organic pollutants is difficult or not biodegradable. Is particularly serious due to the increase of organic matter in water, common chlorination will produce a variety of organic halides, the organic halides are often more toxic than their precursors. Therefore, the second phase of the task of the revolution is not only drinking water to remove turbidity and pathogens, but also to remove a wide variety of organic and inorganic trace contaminants, known as deep cleaning technology.
China is not only a water-poor countries, but also a serious state of contamination of water resources, the traditional city to the water treatment technology can not meet the processing requirements of micro-polluted water.
Is because water and human health and our drinking water is closely related to the existence of some problems, so the development of deep purification technology is absolutely necessary. The depth of the water purification process is also varied: the multi-stage distillation, ion exchange, activated carbon adsorption, have in recent years developed ultrafiltration technology. It is reported that the water industry in 2010 on the High Technology Forum Membrane Technology and engineering application modules, there is "ultrafiltration technique in the application of the water supply industry," the theme of guest speaker is the Shanghai Municipal Engineering Design Institute, senior vice president of Engineering Shen Qiu Chang.
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