Fe_(3)O_(4)/CPAM磁性絮凝剂对高浊度水的絮凝作用及其响应面优化  

Flocculation of Fe_(3)O_(4)/CPAM Magnetic Flocculant for High Turbidity Water and Optimization of Its Response Surface

作　　者：范廷玉[1,2] 潘进宏 王兴明 王顺[1,2] 路啊康 周维民[3] FAN Tingyu;PAN Jinhong;WANG Xingming;WANG Shun;LU Akang;ZHOU Weimin(School of Earth and Environment,Anhui University of Science and Technology,Huainan 232001,China;Institute of Environmental Friendly Materials and Occupational Health,Anhui University of Science and Technology,Wuhu 241002,China;Anhui Shuiyun Environmental Protection Co.,LTD.,Wuhu 241000,China)

机构地区：[1]安徽理工大学地球与环境学院,安徽淮南232001 [2]安徽理工大学环境友好材料与职业健康研究院(芜湖),安徽芜湖241002 [3]安徽水韵环保股份有限公司,安徽芜湖241000

出　　处：《水处理技术》2023年第8期25-29,共5页Technology of Water Treatment

基　　金：安徽理工大学环境友好材料与职业健康研究院研发专项基金(ALW2020YF08);国家重点研发计划(2022YFF1303303);国家自然科学基金(51878004);中国工程院战略研究与咨询项目(2021-XZ-18);安徽省重点研究与开发计划项目(202104a06020027);淮北矿业集团科技项目(2022)。

摘　　要：为高效处理高浊度水,采用Fe_(3)O_(4)与阳离子聚丙烯酰胺(CPAM)通过溶液共混法合成了磁性絮凝剂(CPAMF),系统分析了CPAMF的表面特征:采用扫描电镜(SEM)和傅里叶变换红外光谱(FTIR)分析其表面形态和化学结构,X射线衍射(XRD)验证晶体结构,Zeta电位分析仪测定了CPAMF不同pH下的Zeta电位。研究CPAMF对高浊度水的处理效果,讨论了Fe_(3)O_(4)与CPAM不同质量比合成的CPAMF在不同投加量、不同搅拌时间和不同pH对高岭土悬浮液(0.2 g/L)的浊度去除率,结合Zeta电位分析絮凝机理。以投加量、pH和搅拌时间为自变量,采用Box-Behnken设计响应面实验,筛选出的最佳反应条件为:投加量0.51 g/L,pH为6.2,搅拌时间为4.5 min,絮凝效率为93.41%。研究为高浊度废水水处理提供了技术参考。In order to efficiently treat high turbidity water,magnetic flocculant(CPAMF)was synthesized by solution blending method using Fe_(3)O_(4)and cationic polyacrylamide(CPAM),and the surface characteristics of CPAMF were systematically analyzed:The surface morphology and chemical structure of CPAMF were analyzed by scanning electron microscopy(SEM)and Fourier Transform infrared spectroscopy(FTIR).The crystal structure was verified by X-ray diffraction(XRD).The zeta potential of CPAMF at different pH was measured by zeta potential analyzer.The treatment effect of CPAMF on high turbidity water was studied.The turbidity removal rate of kaolin suspension(0.2 g/L)by CPAMF synthesized with different mass ratios of Fe_(3)O_(4)and CPAM was discussed at different dosage,stirring time and pH.The flocculation mechanism was analyzed by combining with Zeta potential.Taking dosage,pH and stirring time as independent variables,box-Behnken response surface experiment was used to design the optimal reaction conditions:dosage 0.51 g/L,pH 6.2,stirring time 4.5 min,and flocculation efficiency 93.41%.The research provides technical reference for high turbidity wastewater treatment.

关 键 词：Fe_(3)O_(4) 阳离子聚丙烯酰胺 磁性絮凝剂 表面特征 响应面优化 

分 类 号：TQ314.253[化学工程—高聚物工业] X703.1[环境科学与工程—环境工程]