内地自来水合格率仅50%（The qualified rate of inland water is only 50%）.docVIP

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内地自来水合格率仅50%（The qualified rate of inland water is only 50%）.doc

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内地自来水合格率仅50%（The qualified rate of inland water is only 50%）

内地自来水合格率仅50%（The qualified rate of inland water is only 50%） The qualified rate of inland water is only 50% 2012, 05, 08, 04:41 Source: Guangming Wang Water supply and water plant, municipal water supply pipeline users, two water supply facilities to filter, handle, enter, enter, enter, enter, enter, enter, enter, enter, enter, enter, enter, enter, enter, enter, enter, enter and enter Surface water: about 50% of Chinas water sources are polluted and hundreds of organic compounds and heavy metals are sent into the water Groundwater: the presence of fluorine, arsenic, iron, manganese and other standards Of the more than 4000 waterworks across the county, 98% still use traditional water treatment processes. If the water is polluted by heavy metals and organic compounds, the traditional process will be inadequate. Scholars believe that at least 20% to 30% of the water treatment plant needs to be advanced as soon as possible. Survey shows that the quality of Chinas urban water supply network is generally poor, inconsistent with the national standard of gray cast iron pipe accounted for 50.80%, accounting for 13% of ordinary cement pipes, galvanized pipe and so on accounted for 6%. Old pipe network leakage serious, often burst pipe, from the point of view of water quality, prone to two pollution. From 2000 to 2003, there were 4232 and two pollution incidents in the water quality of pipe network in 184 large and medium-sized cities in china. The two pollutants are microorganisms, and boiling water can kill them. In China capital city, each city has thousands of tank or cistern, two water pollution incidents are frequent in recent years. The supervision of the two water supply facilities in each city is weak. No direct drinking water is available in mainland China, and boiling water can kill microbial pollution, but it can not remove organic pollutants and heavy metal ions. Many organic pollutants accumulate in human body to a certain extent, which may lead to carcinogenesi