Fenton法处理腈纶聚合废水

采用Fenton法处理腈纶聚合废水，考察药剂、反应条件等对处理效果的影响，并分析了其作用机理，确定了反应过程中的关键控制因素. 结果表明:Fenton法处理腈纶聚合废水时，影响COD_Cr去除率的因素依次为c(H₂O₂)＞反应时间＞pH＞c(Fe2+)；最佳试验条件〔c(H₂O₂)为0.2 mol/L, c(Fe2+)为28.8 mmol/L, pH为2.5, 反应时间为150 min〕下处理腈纶聚合废水时，进水ρ(COD_Cr)，ρ(BOD₅)和ρ(丙烯腈)分别为1 200.0，242.1和97.4 mg/L，出水分别为301.6，110.0和0 mg/L，去除率分别为74.9%，55.0%和100.0%，ρ(BOD₅)/ρ(COD_Cr)由0.2提高到0.36，废水可生化性显著提高，特征污染物丙烯腈得到有效去除. 

Treatment of Acrylic Fiber Polymerization Wastewater by Fenton Method

The Fenton method was applied to the treatment of acrylic fiber polymerization wastewater. The influences of the agentias and reaction conditions on removal efficiency were investigated, the action mechanism was analyzed, and the key controlling factors in the reaction course were determined. The indicator COD_Cr was used to determine the roles of influence in the agentias and reaction factors. The results showed that the degree of influence in the experiment was c(H₂O₂) > t > pH > c(Fe2+). The optimal operating conditions tested were as follows: c(H₂O₂)0.2 mol/L, c(Fe2+)28.8 mmol/L, pH2.5, t150 min. Under these conditions, influent concentrations, effluent concentrations, and removal efficiencies of ρ(COD_Cr), ρ(BOD₅) and ρ(acrylonitrile) were 1 200.0 mg/L, 242.1 mg/L, and 97.4 mg/L; 301.6 mg/L, 110.0 mg/L, and 0 mg/L; and 74.9%, 55.0%, and 100.0%, respectively. The biodegradability of acrylic fiber polymerization wastewater was improved obviously by ρ(BOD₅)/ρ(COD_Cr) increasing from 0.2 to 0.36, and the particular pollutant, acrylonitrile, was removed efficiently.