磁聚复配物絮凝预处理维生素C废水的研究  

Research on the pretreatment of Vitamin C wastewater by magnetic flocculants

作　　者：柳丹[1] 王相勤[1] 季程晨[1] 蔡冬清[1] 余增亮[1] 

机构地区：[1]中国科学院等离子体物理研究所,安徽合肥230031

出　　处：《工业水处理》2007年第9期27-30,共4页Industrial Water Treatment

基　　金：中国科学院知识创新工程项目(KSCX2-SW-324)

摘　　要：针对维生素C废水生化处理难度大、处理效率低等问题,采用磁聚复配物絮凝预处理维生素C废水,讨论了pH、复配物用量、搅拌速度与时间、温度、磁场强度等对处理效果的影响。实验结果显示,在pH5～6,40mg/L壳聚糖与100mg/LFe3O4复配,搅拌速度200r/min下搅拌5min,温度35～40℃,外加磁场(0.5T)作用1min的情况下,维生素C废水的絮凝率达到99.6%,COD去除率为87.5%,表明磁聚复配物对维生素C废水不仅有很好的净化效果,且可显著提高固液分离的速度。In order to solve the diffculties in the biodegradation of Vitamin C wastewater and its low treatment efficiency, the pretreatment of Vitamin C wastewater by magnetic flocculants has been studied. The results show that optimum flocculation conditions are：pH 5-6,compounding 40 mg/L of chitosan with 100 mg/L ferroferric oxide,stirring at the rate of 200 r/min for 5 min,35- 40 ℃. Under such conditions,flocculation rate reaches 99.6% and the removal rate of COD is 87.5% in the presence of magnetic field （0.5 T） ,indicating that magnetic flocculants could achieve satisfactory flocculating effect,and furthermore,dramatic accelerate pretreatment process.

关 键 词：维生素C废水 壳聚糖 磁场 絮凝 

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]