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目的筛选更加有效实用性强的饮水除氟材料。方法通过实验室模拟检测分析,对改性超高分子质量聚乙烯(UHMWPE)微滤膜在用于饮水除氟时,出水流量、含氟浓度对除氟效果的影响,以及使用条件、再生使用等性能进行了研究。结果在有效过滤膜面积为140 cm2,出水流量为3 L/min时,可使60 L含氟浓度为3 mg/L水得到有效净化,而且出水含氟量保持在0.48～0.93 mg/L之间,符合国家生活饮用水卫生标准。微滤膜的动态饱和吸附容量为0.44mg/cm2,反复再生6次后,吸附容量可恢复85%以上。结论改性超高分子质量聚乙烯微滤膜具有除氟效果明显,稳定,使用周期长,使用方便。对于饮水除氟具有较高的使用价值。
Objective To screen more effective and practicable fluoride removal materials for drinking water. Methods By laboratory simulation analysis, the effect of effluent flow rate and fluorine concentration on the effect of fluoride removal when the modified UHMWPE microfiltration membrane was used for drinking water fluoride removal, as well as the conditions of use, regeneration Other properties were studied. Results When the effective filtration membrane area was 140 cm2 and the effluent flow rate was 3 L / min, the water content of 60 L with 3 mg / L of fluorine was effectively purified and the fluorine content in the effluent maintained at 0.48-0.93 mg / L Between, in line with national drinking water health standards. The dynamic saturated adsorption capacity of the microfiltration membrane is 0.44mg / cm2, and after 6 times of regeneration, the adsorption capacity can recover over 85%. Conclusion Modified ultra-high molecular weight polyethylene microfiltration membrane with fluoride removal effect is obvious, stable, long life cycle, easy to use. Fluoride for drinking water has a high value.