三维电极处理腈纶聚合废水的条件优化研究

采用填充粒状活性炭的三维电极处理腈纶聚合废水，考察实验条件对污染物去除效果的影响以及废水处理前后可生化性的变化.阳极为Ti/SnO₂-Sb₂O₃网状极板，阴极为网状钛电极，分别考察了停留时间、 电解电压、 pH值、 曝气量对废水中污染物去除效果的影响.结果表明，电解电压和pH值对废水有机物的去除率影响较大，在最优实验条件：电解电压为15V，pH值为3，曝气量400 mL/min的条件下电解120 min，腈纶聚合废水的COD、 TOC和丙烯腈的去除率分别为32.59%、 22.17%和89.70%，并且经过电解处理，废水BOD₅/COD值从0.02上升至0.42，可生化性显著提高，为生物处理提供了条件.

Optimization of Acrylic Fiber Polymerization Wastewater Treatment Condition by Three-dimensional Electrode

The research was focus on the influence of experimental conditions to the removal efficiency of contaminant and the change of biodegradability in the treatment of acrylic fiber polymerization wastewater using three-dimensional electrode reactor with granular activated carbon. The anode was Ti/SnO₂-Sb₂O₃ expanded metal sheet electrode. The cathode was Ti expanded metal sheet electrode. The parameters investigated were the reaction time, electrolytic voltage, initial pH value and aeration amount. The results show that the electrolytic voltage and initial pH value had greater impact on the removal efficiency of organic pollutants. Under the optimal experimental condition with electrolytic voltage 15 V, initial pH value 3, aeration amount 400 mL/min, the removal rates of COD,TOC and acrylonitrile were 32.59%, 22.17% and 89.70%,respectively,and the value of BOD₅/COD increased from 0.02 to 0.42 within 120 min,which improved the biodegradability greatly and was beneficial for further biological treatment.