【作者】 邬晓梅； 李连香； 程先军； 刘文朝；

【Author】 Wu Xiaomei~(1,2),Li Lianxiang~(1,2),Cheng Xianjun~(1,2),Liu Wenchao~(1,2) (1.Department of Irrigation and Drainage,China Institute of Water Resources and Hydropower Research,Beijing 100048;2.National center for Efficient Irrigation Engineering and Technology Research,Beijing 100048)

【机构】 中国水利水电科学研究院水利研究所； 国家节水灌溉北京工程技术研究中心；

【摘要】 为客观评价目前建设较多的活化沸石除氟农村饮水安全工程,系统调查了典型工程的实际运行状况,跟踪分析了运行过程中出水氟浓度,指出了工程应用中存在的问题。调研结果表明,活化沸石在实际工程应用中存在吸附容量低、脱附再生能力较差等问题:完成脱附再生后的运行初期活化沸石对氟有一定去除效果,初始出水氟浓度能达到1mg/L以下,但活化沸石对氟的吸附性能衰竭很快,在再生后第2天出水氟浓度均已接近原水氟浓度;通过加入盐酸调节pH至6.0有利于活化沸石吸附容量的增加,但效果有限,在运行中期也出现了出水氟浓度超标问题,且出水偏酸性,pH为5.9～6.5。同时,由于农村管理水平较低和缺乏水质监测措施等不利因素的存在共同影响了活化沸石除氟工程的应用效果。更多还原

【Abstract】 To objectively evaluate the rural drinking water safety projects of activated zeolite defluoridation which were founded a lot recently,the practical operation states of typical projects were systematically investigated,the fluoride concentration of outlet water was tracking analysised,and the projects application problems were pointed out.The investigated results shown that activated zeolite has low fluoride adsorption capacity and relatively bad desorption and regeneration ability in practical application.After desorption and regeneration,the activated zeolite has performed fluoride removal ability during initial operation period and the fluoride concentration of outlet water was below 1mg/L.But the defluoridation capacity exhausted quickly and the fluoride concentration of outlet water was almost near the inlet water in the second day after regeneration.Adjust inlet water pH to 6.0 by adding hydrochloric acid could increase the fluoride adsorption capacity of activated zeolite in some degree,but the fluoride concentration were not meet the drinking water standard in media operation period and outlet water is acidic (pH between 5.9～6.5).Meanwhile,the operation efficiency of activated zeolite defluoridation projects was also affected by the low rural management level and the lack of the water quality measures.更多还原