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目的了解潍坊市2008~2012年间高氟区改水效果。方法 1~5个高氟水村的乡镇(街办)至少随机选择1个村庄,6个村以上的,采取分层随机抽样原则,依据村庄所在不同地理位置布点,按供水人口数量分层,随机选择自然村为监测点,每个监测点采集1份末梢水,检测水质氟化物,检测结果按《生活饮用水卫生标准》进行评价。采取更换水源、电凝聚法和电渗析法进行除氟改水。结果改水前全市高氟区水质氟化物检测范围是1.59~9.39mg/L,均数为3.34mg/L,改水后检测范围是1.16~1.48mg/L,均数为1.32mg/L,改水前后对比差异有统计学意义(χ2=18.04,P<0.01),更换水源、电凝聚法和电渗析法除氟改水后,饮水中氟化物合格率分别为100%、80.95%和73.07%。结论更换水源是除氟改水最佳选择,无法实施管网延伸工程的地区可选择电凝聚和电渗析法除氟,效果明显。
Objective To understand the effect of water diversion in Weifang City from 2008 to 2012. Method 1 to 5 villages and towns (street offices) with high fluorine water village at least randomly select 1 village, more than 6 villages, take the stratified random sampling principle, according to the different geographical location of the village, according to the number of water supply population stratified random Select natural villages as monitoring points, each monitoring point to collect a peripheral water, testing of fluoride water quality, test results according to “drinking water health standards” for evaluation. Take replacement of water, electric coagulation and electrodialysis fluoride removal water. Results Before water change, the detection range of fluoride in water of high fluoride area in the city was 1.59-9.39mg / L, the average was 3.34mg / L, the detection range was 1.16-1.48mg / L after water modification, the average was 1.32mg / L, There was significant difference between before and after water diversion (χ2 = 18.04, P <0.01). The pass rates of fluoride in drinking water were 100%, 80.95% and 73.07 respectively after water exchange, electrocoagulation and electrodialysis %. Conclusion Replacing water source is the best choice for removing water and improving water quality. In areas where pipe network extension project can not be implemented, selective electro-coagulation and electrodialysis can remove fluoride, and the effect is obvious.