CAJ | 학술논문

在静态试验装置中，通过化学沉淀与混凝法相结合的二次除氟工艺处理电厂高浓度含氟脱硫废水，采用正交试验研究了多因素操作条件对脱硫废水除氟效率的综合影响．结果表明：氯化钙除氟性能优于氢氧化钙，最佳钙氟摩尔比n（Ca）／n（F）一l：1.3；添加硫酸铝、氯化铁等混凝剂可明显改善药剂的除氟性能，确定了最佳”（A1）／n（F）=1．5、最佳n（Fe）／n（F）=0．3；在PH=5～6的弱酸性条件、温度约为30℃、转速约为500r／min、添加聚丙烯酰胺（PAM）质量分数约为0．1％的情况下，除氟效率高达95％以上；影响脱硫废水除氟效率的因素由主到次依次为：CaCl2〉Al2（SO4）3〉PAM〉FeCl3〉PH〉温度〉搅拌转速．
재정태시험장치중，통과화학침정여혼응법상결합적이차제불공예처리전엄고농도함불탈류폐수，채용정교시험연구료다인소조작조건대탈류폐수제불효솔적종합영향．결과표명：록화개제불성능우우경양화개，최가개불마이비n（Ca）／n（F）일l：1.3；첨가류산려、록화철등혼응제가명현개선약제적제불성능，학정료최가”（A1）／n（F）=1．5、최가n（Fe）／n（F）=0．3；재PH=5～6적약산성조건、온도약위30℃、전속약위500r／min、첨가취병희선알（PAM）질량분수약위0．1％적정황하，제불효솔고체95％이상；영향탈류폐수제불효솔적인소유주도차의차위：CaCl2〉Al2（SO4）3〉PAM〉FeCl3〉PH〉온도〉교반전속．
An experimental study on defluorination process of desulphurization wastewater was carried out in a static testing apparatus based on combination of chemical coagulation and precipitation method, during which factors influencing the defluorination efficiency were analyzed by orthogonal tests. Results show that the defluorination property of calcium chloride is better than that of the calcium hydroxide, and the best n（Ca）/n（F） is 1 ： 1.3; adding an appropriate amount of coagulants may help to improve the defluori nation property, such as some aluminum sulfate and iron chloride, and the best ratios of n（A1）/n（F） and n（Fe）/n（F） are respectively 1.5 and 0.6; the defluorination efficiency may get up to 95% under the prem ise of pH value in 5-6, temperature at 30 ~C, rotating speed at 500 r/min, and an addition of 0.1% PAM. Factors influencing the defluorination efficiency are found to be in following descending order： CaC12, Al2（SO4）3, PAM, FeC13, pH value ,temperature and rotating speed.