化学混凝沉淀法处理含氟废水研究  

Study on the Treatment of Fluorine-containing Wastewater by Chemical Coagulation Sedimentation Method

作　　者：李佳琪 吴丽红 兴虹[1] 唐馨悦 袁润 LI Jiaqi;WU Lihong;XING Hong;TANG Xinyue;YUAN Run(School of Biomedical and Chemical Engineering,Liaoning Institute of Science and Technology,Benxi Liaoning 117004,China)

机构地区：[1]辽宁科技学院生物医药与化学工程学院,辽宁本溪117004

出　　处：《辽宁科技学院学报》2024年第3期22-25,共4页Journal of Liaoning Institute of Science and Technology

基　　金：辽宁科技学院2024年校级大创项目(202411430039).

摘　　要：文章采用氯化钙、氯化钙-聚合氯化铝(PAC)处理氟离子浓度为95 mg/L的废水,考察氯化钙投加量、PAC投加量对氟离子去除率的影响,出水浊度随沉淀时间的变化,进水pH对氯化钙-PAC除氟的影响。实验结果表明,氯化钙-PAC处理效果优于氯化钙单独处理效果,进水最佳pH值为7,最佳Ca/F(物质的量比)为0.9,PAC(10%)最佳投加量为每升水样6.0 mL。在此条件下,出水残余氟离子浓度为8.6 mg/L,出水浊度为2 NTU,处理1吨水的药剂费为2.7元。Calcium chloride and calcium chloride-polyaluminium chloride(PAC)were used to treat wastewater with fluoride ion concentration of 95 mg/L.The effects of calcium chloride and PAC amounts on the removal rate of fluoride ion,the change of effluent turbidity with sedimentation time,and the effect of influent pH on the removal of fluoride by calcium chloride-PAC were investigated.The experimental results showed that the treatment effect of calcium chloride-PAC is better than that of calcium chloride alone.The optimum pH of the influent is 7,the optimum Ca/F(amount of substance)is 0.9,and the optimum amount of PAC(10%)is 6.0 mL per liter of water sample.Under this condition,the residual fluoride ion concentration in the effluent is 8.6 mg/L,the turbidity of the effluent is 2 NTU,and the reagent cost for treating 1 ton of water is 2.7 RMB.

关 键 词：含氟废水 氯化钙 聚合氯化铝(PAC) 

分 类 号：X703[环境科学与工程—环境工程]