(1. 湖南城市學院 材料與化學工程學院，益陽 413000；
2中南大學 冶金與環(huán)境學院，長沙 410083；
3. 中南大學 云浮研究院，云浮 527300)
摘 要: 以磁種(Fe3O4)和聚合硫酸鐵(PFS)為主原料，通過復配工藝制備新型復合磁絮凝劑(CMF)，并將其應用于黃藥廢水的處理。結果表明：當Fe3O4球磨時間為40 h、聚二甲基二烯丙基氯化銨(PDMDAAC)、聚乙烯吡咯烷酮(PVP)和殼聚糖(CTS)在PFS中的添加量分別為480、280和60？g/L時， Fe3O4-PDMDAAC-PFS、Fe3O4-PVP-PFS和Fe3O4-CTS-PFS的沉降時間分別可達248、1035和507？h。當黃藥廢水初始pH為9、Fe3O4-PDMDAAC(240 g/L)-PFS和Fe3O4-CTS(40 g/L)-PFS中復合絮凝劑投加量分別為180和160 mg/L、Fe3O4添加量分別為5%和20%時，與PFS相比，F(xiàn)e3O4-PDMDAAC(240？g/L)-PFS和Fe3O4-CTS(40？g/L)-PFS對COD總去除率分別提高17.28%和20.16%，對黃藥總去除率分別提高1.91%和2.48%，且Fe3O4-PDMDAAC-PFS和Fe3O4-CTS-PFS都獲得了更快的絮體沉降速度和更密實的絮體結構。
關鍵字: 磁絮凝；復合絮凝劑；黃藥廢水；Fenton試劑；絮體
（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
