It has four major reasons that water contamination accident takes place frequently

It has four major reasons that water contamination accident takes place frequently
It has four major reasons that water contamination accident takes place frequently
Staff reporter Meng QingPu People's ill incident that even died because of drinking water pollution of life has been happening constantly recently. It is the intersection of Hunan and the intersection of Liuyang and Hunan and the intersection of heavy metal and cadmium that chemical plant discharge that pollute the source of water and cause people desperately first, and then the pollution of running water in Chifeng of the Inner Mongol causes thousands of people to be ill and in hospital. August 6, the environment of Ministry of Public Health and health origin of the domestic water pollution of chief physician Chen LianSheng, committee member of Committee of Experts, solve the safe key to the drinking water to say when a series of problem is interviewed by reporter, for guarantee people drinking water hygiene safe, to the intersection of source and water, make water, water supply, have clear sanitary standard our country, but go wrong in execution, lead to the fact the contamination accident is happening constantly. The data much from environmental protection department of potential safety hazard of drinking water reveal, 2008, the environmental incident happens suddenly and reach 135 in what this department manages and deals with directly, up to 46 incidents of threatening the security of masses drinking water and source of water among them. From the beginning of this year, it is polluted that drinking water and source of water phenol of Yancheng of Jiangsu Province take place in succession, water China of source of water in Shaoguan of Guangdong Province gets rich quick, discharges the malignant incident of polluting etc. of polluting the source of water, running water of Chifeng, the Inner Mongol of heavy metal cadmium in Liuyang Hunan and chemical plant. The reason for analyzing the contamination accident of drinking water, Chen LianSheng thinks that mainly there are 4 respects. First, water of source of water is seriously polluted, this is the greatest problem that the drinking water faces safely at present. The water pollution of the source of water is shown as two characteristics: First, in dry season, the pollution sources is mainly chemical, heavy metal and organic matter. Because there is less water yield in dry season, enterprise's blowdown was not reduced, the dilution detergent power of water yield in the network of waterways becomes weak at this moment, the above-mentioned chemical material is very easy to exceed standard in the source of water. Have, exceed standard blowdown in violation of rules and regulations again, lead to the fact the polluting seriously of the water body easily. The model in this respect is a contamination accident of drinking water and source of water phenol of Yancheng. Second, in wet season, the pollution sources mainly comes from domestic pollution, such as people and animals excrement and urine, domestic rubbish,etc.. The water yield is relatively big in wet season, it will be reduced notably because the density of chemicals dilutes in the source of water, difficult to exceed standard, but the big flood are apt to bring the biological pollutant in the environment into the source of water, especially in big flood period, cause polluting to the water body seriously. The pollution of running water in Chifeng is a model in this respect. Second, the problem exists to make water links. The next link that water of source of water enters is a water plant, because of the historical reason, most water plants of our country deal with making water craft and lagging behind of chemicals, organic matter at present, ability is insufficient. Can also deal with reluctantly in daily cases, but meet the accident, such as water of source of water is polluted by chemicals or organic matter, or because when the ecological environment change causes the water quality of the source of water to drop, the disparity of handling capacity is obvious. The former such as Liuyang Hunan and chemical plant discharges the contamination accident of heavy metal, it causes safe incident of water etc. that the latter such as algae of Tai Hu break out. Undergo effective the intersection of pollution and water of treatment, circulate pipeline dispatch from the factory, will it influences drinking water of common people to be safe directly. Third, safe incident early warning monitoring system of water is scarce. From water of source of water to produce water of factory, and then water of tip reaching resident's home, each link generally lack and meet an urgent need the early warning monitoring system. Cause the health to damage in order to prevent residents from drinking water not up to standard, according to relevant regulations, the department in environment protecting mode should monitor the source of water in 24 hours, once find water of source of water is polluted, should tell the downstream water plant to take measures in time, such as closing into water valve; And water, before not dispatching from the factory, water plant too should set up automatic monitoring instrument for less than 24 hour, find, publish factory to be ink not up to standard, should close water valve of factory out immediately, prevent water not up to standard from entering the next links. But the present current situation is, there are no this set of systems at all in some places, though some places become a mere formality. In supplying water this link, the related departments should set up the automatic monitoring instrument of 24-hour water quality in producing the position of water of factory, water of tip, find abnormality to deal with immediately, in order to stop water not up to standard entering in the mouths of common people. But up till now, water quality automatic monitoring instrument was not still set up. Fourth, it is not enough for the government to pay attention to safety work of water. It is the concern about the food security of the government to compare with an obvious one. In the past 20 years, the food security has gone through food hygiene, great enactment of law two times of food security. In drinking water, the most intact legislative authority is " management of drinking water hygiene surveillance " that Ministry of Construction, Ministry of Public Health issued in 1996, it is only a regulation file. In fact, the security of water is not second to the food security to the important intensity of a society at all. In the field of business, two sentences that the experts often chat about are: If water is not up to standard, all food is not up to standard. Because the making without a kind of food can leave water; People needn't eat the food in one week, but can drink water for one week. Under such a background, the finance is right to guarantee safe input of water is obviously insufficient. For example, as a kind of public product, should be buried the single water quality monitoring expenses by the government and born by enterprise completely at present. Its result is, it is unwilling to cooperate because enterprises bear and increase, or overtly agree but covertly oppose, bury the hidden danger for water security. It needs to be multicell to leave growing oldly in succession to say, obviously raise speed with the industrialization of our country, urbanized paces together to solve the problem, the water body water quality of the network of waterways exceeds standard seriously, the sudden water contamination accident happens occasionally, there are more and more questions such as the rural unsafe drinking water,etc., not merely become bottlenecks which restrict the sustainable development of economics and society in some areas, become the important factor of influencing resident's health even more. It is extremely urgent to solve the safe problem of drinking water. He thinks, the government should define the duty of every department on safe legislation of water as soon as possible, such as define in environment protecting mode department make the intersection of water and link, hygiene department in the intersection of tip and the intersection of water and the intersection of person who supervise and power and responsibility of field in the intersection of source of water and the intersection of water and protection, construction department, make sure power and responsibility is unified. The drinking water is safe must implement administrative leader's responsibility system, the local government should include the drinking water in leading cadre's examination content safely, strengthen the public finance to the security of drinking water, especially input that the source of water protected at the same time. It is the most important thing to strengthen water of source of water and protect. Must begin from source while protecting the water security. Several jobs needing badly being launched at present are, organize development drinking water and source of water the safe state is investigated and appraised, it by source of water water monitor,source of water nearby, especially must close down, suspend operations to last the enterprises with heavy pollution chemicals of the upper reaches all. Making water links, the focal point is the remaking technology. Seeing that the domestic water plant makes water craft generally backward current situations, can consider setting up the purification lake of a reservoir type between source of water and water plant, make water quality have a ecology that precipitates and purifies the course naturally, can totally reach the relevant standard of water of source of water before entering water plant. In addition, the water plant should expand and mix and congeal and precipitate the pool, slow down the velocity of flow of water. The velocity of flow is too fast, the sediment unfavorable to the pollutant is removed. It is the key to forming the safe roller chain to set up the complete safe incident early warning monitoring system of water. If water of source of water is polluted, the department in environment protecting mode Monitor the relevant data, should take the requisite measure in the early warning low reaches as soon as possible; Water plant monitor unsafe data before not dispatching from the factory, should as soon as possible to visit and feedback up and down, take the emergency measure, prevent water not up to standard from endangering resident's health. Likewise, if the Ministry of Health monitors water of tip unusually, should feedback to the upper reaches as soon as possible, find out the reason. So can make water, the intersection of water supply and each link, strengthen, control effectively, from the intersection of source and water, guarantee the qualified drinking water flows into the mouths of common people.


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