三维电极-铁碳微电解复合工艺处理垃圾渗滤液的动静态试验对比研究

发布时间：2018-01-19 02:18

本文关键词： 三维微电解铁碳电极垃圾渗滤液动静态试验去除效果　出处：《科学技术与工程》2016年29期 　论文类型：期刊论文

【摘要】：探索三维电催化微电解集成设备、利用三维电催化微电解技术,以国际公认的难处理废水垃圾渗滤液为预处理对象,通过动态、静态单因素试验,分析三维电催化微电解集成设备预处理前后,渗滤液中COD、氨氮和色度三项指标的变化。从电解电压、极板正负交换周期、曝气量、渗滤液流量和电解时间5种影响因子角度,分析并确定试制的集成设备最佳运行条件,达到为后续处理工艺减轻压力,降低单位废水量的处理成本,降低污染等目的。试验结果显示电压梯度在25~30 V时、极板正负交换周期控制在30 s、曝气总量梯度在2 000 L/h、流量控制在30 L/h、电解时间90 min左右时,COD去除率可达41%、氨氮去除率可达24%、色度去除率可达60%,系统对污染物去除率较高。
[Abstract]:The three-dimensional electrocatalytic micro-electrolysis integrated equipment was explored. By using the three-dimensional electrocatalytic micro-electrolysis technology, the landfill leachate, which is recognized by the world as the pretreatment object, was tested by dynamic and static single factor test. The changes of COD, NH3-N and chromaticity in leachate before and after pretreatment of three-dimension electrocatalytic micro-electrolysis equipment were analyzed. The electrolysis voltage, positive and negative exchange period of electrode plate, and aeration rate were analyzed. The optimal operating conditions of the integrated equipment were analyzed and determined in order to reduce the pressure and reduce the cost of treatment per unit of waste water for the subsequent treatment process by analyzing and determining the optimal operating conditions of the integrated equipment based on five influencing factors such as leachate flow rate and electrolytic time. The experimental results show that when the voltage gradient is 2530 V, the positive and negative exchange period of the plate is controlled at 30 s and the total aeration gradient is 2 000 L / h. When the flow rate is controlled at 30 L / h and the electrolysis time is about 90 min, the removal rate of COD can reach 41%, the removal rate of ammonia nitrogen can reach 24%, and the removal rate of chromaticity can reach 60%. The system has higher removal rate of pollutants.
【作者单位】：成都理工大学地质灾害防治与地质环境保护国家重点实验室;
【基金】：四川省科技支撑计划(2011G20245)资助
【分类号】：X703.1
【正文快照】： 三维微电解技术自20世纪70年代问世以来,其运行成本低廉、不易二次污染、处理费用经济等优势,在污水处理中逐渐显示出较大应用潜力[1,2]。三维电极技术相比二维电极具有电流效率高、电流利用率高且能耗低等优点。该工艺融合了表面催化、氧化还原、动态吸附等反应过程,可有效破

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