电催化氧化降解高浓度农药废水的研究  

Study on the Degradation of High-Concentration Pesticide Wastewater by Electrocatalytic Oxidation

作　　者：任梦娇 彭永丽 赵贺芳 田迎春 REN Mengjiao;PENG Yongli;ZHAO Hefang;TIAN Yingchun(School of Architectural Engineering,Ma'anshan University,Ma'anshan 243100,China)

机构地区：[1]马鞍山学院建筑工程学院,安徽马鞍山243100

出　　处：《水处理技术》2022年第10期115-120,共6页Technology of Water Treatment

基　　金：2021年度安徽省教育厅高校自然科学研究重点项目(KJ2021A1233);安徽省新农科研究与改革实践项目(皖教秘高[2020]60号);安徽省环境类专业合作委员会教学研究项目(2020jyxm1753);安徽省年度高校优秀青年人才支持计划项目(gxyq2019165);马鞍山学院校级科研基金重点项目(QS2020008)。

摘　　要：通过填充活性氧化铝粒子的电催化氧化反应器对含高浓度难降解有机物的农药废水进行了催化降解过程的研究。探讨了电导率、反应 pH、工作电流、电极板间距、空气流量以及催化剂填充率对农药废水降解效率的影响。结果表明,在电导率为3 890 μS/cm,反应pH为4.5,工作电流为0.286 A,电极板间距为3.5 cm,空气流量为2.0 L/min,催化剂填充率为 40% 时,农药废水降解效率达到最佳,此时 COD 去除率为 81.7%,COD 能耗为 7.35 kWh/kg,BOD/COD 值由 0.053 提升至 0.324,废水可生化性得到大幅提升。The catalytic degradation process of pesticide wastewater containing high concentration of refractory organics was studied through an electrocatalytic oxidation reactor filled with activated alumina particles. The effects of electrical conductivity, reaction pH, working current, electrode plate spacing, air flow, and catalyst filling rate on the degradation efficiency of pesticide wastewater were discussed. The results show that when the conductivity is 3 890 μS/cm, the reaction pH is 4.5, the working current is 0.286 A, the electrode plate spacing is 3.5 cm, the air flow is 2.0 L/min, and the catalyst filling rate is 40%, the pesticide wastewater is degraded The efficiency is the best. At this time, the COD removal rate is 81.7%, the energy consumption is 7.35 kWh/kg, the BOD/COD value is increased from 0.053 to 0.324, and the biodegradability of wastewater is greatly improved.

关 键 词：电催化 降解 农药废水 可生化性 

分 类 号：X786[环境科学与工程—环境工程]