(1. 湖南城市学院 材料与化学工程学院，益阳 413000；
2中南大学 冶金与环境学院，长沙 410083；
3. 中南大学 云浮研究院，云浮 527300)
摘 要: 以磁种(Fe3O4)和聚合硫酸铁(PFS)为主原料，通过复配工艺制备新型复合磁絮凝剂(CMF)，并将其应用于黄药废水的处理。结果表明：当Fe3O4球磨时间为40 h、聚二甲基二烯丙基氯化铵(PDMDAAC)、聚乙烯吡咯烷酮(PVP)和壳聚糖(CTS)在PFS中的添加量分别为480、280和60？g/L时， Fe3O4-PDMDAAC-PFS、Fe3O4-PVP-PFS和Fe3O4-CTS-PFS的沉降时间分别可达248、1035和507？h。当黄药废水初始pH为9、Fe3O4-PDMDAAC(240 g/L)-PFS和Fe3O4-CTS(40 g/L)-PFS中复合絮凝剂投加量分别为180和160 mg/L、Fe3O4添加量分别为5%和20%时，与PFS相比，Fe3O4-PDMDAAC(240？g/L)-PFS和Fe3O4-CTS(40？g/L)-PFS对COD总去除率分别提高17.28%和20.16%，对黄药总去除率分别提高1.91%和2.48%，且Fe3O4-PDMDAAC-PFS和Fe3O4-CTS-PFS都获得了更快的絮体沉降速度和更密实的絮体结构。
关键字: 磁絮凝；复合絮凝剂；黄药废水；Fenton试剂；絮体
（1. School of Materials and Chemical Engineering, Hunan City University, Yiyang 413000, China;
2. School of Metallurgy and Environment, Central South University, Changsha 410083, China;
3. Yufu Research Institute, Central South University, Yufu 527300, China）
Abstract:The composite magnetic flocculant (CMF) was prepared by the composite process, with magnetic seed(Fe3O4) and polyferric sulfate(PFS) as the main raw materials, and its application in the treatment of butyl xanthate wastewater was studied. The results show that when the milling time of Fe3O4 is 40 h, and the concentrations of poly dimethyl diallyl ammonium chloride(PDMDAAC), polyvinyl pyrrolidone(PVP) and chitosan(CTS) in PFS solution are 480, 280 and 60 g/L, respectively, the settlement time of Fe3O4-PDMDAAC-PFS, Fe3O4-PVP-PFS and Fe3O4-CTS-PFS reach 248, 1035 and 507 h, respectively. When the initial pH of butyl xanthate wastewater is 9, the dosage of composite flocculant in Fe3O4-PDMDAAC(240？g/L)-PFS and Fe3O4-CTS(40？g/L)-PFS are 80 and 160 mg/L, respectively, and the Fe3O4 content in CMF are 5% and 20%, respectively, compared with PFS, the total COD removal rates of Fe3O4-PDMDAAC(240？g/L)-PFS and Fe3O4-CTS(40？g/L)-PFS increase by 17.28% and 20.16%, respectively, the total butyl xanthate removal rates of which increase by 1.91% and 2.48%, respectively, and both Fe3O4-PDMDAAC-PFS and Fe3O4-CTS-PFS obtain the faster settling velocity of flocs and denser floc structure.
Key words: magnetic flocculation; composite flocculant; butyl xanthate wastewater; Fenton reagent; floc
