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。

关键词: 维生素C废水, 壳聚糖, 磁场, 絮凝

Abstract:

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 200r/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 (0.5T), indicating that magnetic flocculants could achieve satisfactory flocculating effect, and furthermore, dramatic accelerate pretreatment process.

Key words: Vitamin C wastewater, chitosan, magnet field, flocculation

中图分类号: 

• TQ314.253

• X703.1