工业水处理模板-环境工程学报.docVIP

拟再审修改稿魏金枝1，刘峻峰2，颜婉茹1，张显东1，张义龙2 (1.哈尔滨理工大学化学与环境工程学院，绿色化工技术黑龙江省高校重点实验室哈尔滨 150040 2.哈尔滨工业大学，城市水资源与水环境国家重点实验室哈尔滨 150090） 摘要：为有效处理异噁草酮除草剂废水以Sb掺杂SnO2电极为阳极，不锈钢板为阴极，采用电催化氧化技术对异噁草酮废水进行降解，研究了不同影响因素对异噁草酮去除率的影响，并分析了异噁草酮的降解效果。结果表明当异噁草酮初始浓度为100mg/L、电流密度为20mA/cm2、电解质投加量为0.1mol/L，反应120min后，异噁草酮去除率达到94%，此时TOC去除率为57.9%，能耗为25kWh/m3，且废水的可生化性能显著提高。 X703. 1 Effectiveness of electrocatalysis oxidation treatment of herbicides clomazone wastwater Wei Jinzhi1, Liu Junfeng2 , Yan Wanru1 , Zhang Xiandong1, Zhang Yilong2 （1. Key Laboratory of Green Chemical Engineering and Technology of College of Heilongjiang Province， College of Chemical and Environmental Engineering，Harbin University of Scienc and Technology，Harbin 150040, ChinState Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China) Abstract: In order to find an effective method of treating of clomazone wastwater, the degradation was studied by electrocatalytic oxidation, and Sb doped Ti/SnO2 electrode was used as anode and stainless steel plate as cathode. The main influencing factors and degradation effectiveness of clomazone were discussed in the study. Results showed that when the initial concentration of clomazone was 100mg/L, current density was 20mA/cm2 and the electrolyte dosage was 0.10mol/L, 94% clomazone was removed within 120min. Meanwhile, TOC removal rate was 57.9%, energy consumption was 25kWh/m3 and the biodegradability of the wastewater was improved obviously. Key words: clomazone; electrocatalytic oxidation; removal rate; biodegradability 农药废水化学需氧量、成分复杂、毒性大特点，，有机物极上两种方式进行电催化氧化：在极表面上的直接电反应和利用极表面产生的·OH等强氧化性物种进行间接 基金项目：黑龙江省项 收稿日期： 作者简介：魏金枝 (1966-)，女，博士，副教授E-mail: weijz0451@163. com 于伴随着氧气的析出，会使氧化降解有机物的电流效率降低，能耗升高。而不同的阳极材料具有不同的析氧电位，研究表明Sb掺杂Ti/SnO2异草酮商品名为广灭属于长残留、难降解类型的选择性芽前Sb掺杂Ti/SnO2电极为阳极，采用电催化氧化技术，对异噁草酮废水的降解进行可行性研究，分析影响其降解性能的因素，评价降解效果，为实际异噁草酮废水的处理提供基础研究数据。1. 材料与方法 1.1 实验材料 异噁草酮纯品（99.97%，农业部药检所）；无水硫酸钠分析纯；采用浸渍法自制Sb掺杂Ti/SnO2涂层电极[]；SK1700型直流稳压电源 1.2 实验方法