Fe-Co合金催化降解腈纶废水影响因素研究

Influencing Factors of Fe-Co Alloy in the Catalytic Degradation of Acrylic Fiber Wastewater

研究Fe-Co合金催化降解腈纶废水的影响因素并优化,应用三维荧光光谱探讨腈纶废水中污染物的去除规律。结果表明,初始p H由1升到6,COD去除率由35.0%快速升至60.0%后再快速降至10.1%;反应时间小于10 min时,COD去除率由10.8%快速升至57.0%再缓慢升至60.8%后基本维持不变;合金与H2O2质量比和合金投加量对COD去除率影响较小。最优条件初始p H值为2,合金与H2O2质量比为6,合金投加量为2.868 g/L,反应时间为10 min下COD去除率可达到65.5%,处理后水达到了《污水综合排放标准》(GB8978-1996)的一级排放标准。三维荧光扫描处理前后水样,3个明显荧光峰完全消失,分析各荧光峰发现:Fe-Co合金有效去除了腈纶废水中可见腐殖质类物质、类蛋白类物质以及UV腐殖质类物质。

Fe-Co alloy was applied in the catalytic degradation of acrylic fiber wastewater, and the influencing factors during the reaction process were investigated and optimized, and the pollution degradation rule was studied with three- dimensional fluorescence. Results showed that COD removal rate quickly increased from 35.0% to 60.0% and then quickly decreased to 10.1%, while pH increased from 1 to 6. When the reaction time was less than 10 min, COD removal rate quickly increased from 10.8% to 57.0% and then maintained stable after it slowly increased to 60.8%. Alloy/H202 mass ratio and dosage of alloy had little influence on the COD removal rate. In optimum conditions of pH 2, alloy/H202 mass ratio 6, dosage of alloy 2.868 g/L, reaction time 10 min, the removal rate of COD was 65.5% and the treated wastewater reached the Grade I in the Integrated Wastewater Discharge Standard （GB8978-1996）. Scanning the wastewater before and after treatment, it was found that three obvious fluorescence peaks disappeared completely. Fe-Co alloy can remove all visible humus, protein and UV humus of acrylic fiber wastewater efficiently.