塑料粒子三维电极反应器对硝态氮降解的效果  

Effect of Three-dimensional Electrode Reactor of Plastic Particles on the Degradation of Nitrate Nitrogen

作　　者：司超 许振芹 丁原红 Si Chao;Xu Zhenqin;Ding Yuanhong(College of Environmental and Safety Engineering,Qingdao University of Science and Technology,Qingdao 266042,China;Ningyang County Ecological Environment Monitoring Center,Ningyang 271411,China)

机构地区：[1]青岛科技大学环境与安全工程学院,山东青岛266042 [2]宁阳县生态环境监控中心,山东宁阳271411

出　　处：《山东化工》2022年第21期200-203,共4页Shandong Chemical Industry

基　　金：江苏省科技基金项目(BE2014616)。

摘　　要：采用导电粒子和Fe-Ti/RuSn极板构建的三维电极反应器对硝态氮进行了降解试验研究,其中导电粒子是以塑料为基体,将Pd-Sn、Ru-Sn等双金属催化剂负载在其上。研究结果表明:当硝态氮废水为300 mg/L、水力停留时间为2.5 h时,三维电极反应器对硝态氮和总氮的去除率分别为93.14%和83.29%;硝态氮的阴极还原产物,将在阳极催化、导电粒子和氯离子的协同作用下,继续转化,促进了硝态氮较为完全的降解,硝态氮和总氮的去除效果均有明显的提升。A three-dimensional electrode reactor(TDER)constructed with conductive plastic particles and Fe cathode-Ti/RuSn anode plates was used to study the degradation of nitrate nitrogen,on which surfaces the bimetallic catalysts such as Pd-Sn and Ru-Sn was coated.The research results showed that,when the nitrate nitrogen concentration and HRT was maintained 300 mg/L and 2.5 hours respectively,the removal rates of nitrate nitrogen and total nitrogen by TDER was 93.14%and 83.29%,respectively,the results demonstrated that,it was possible that the reduction intermediates was converted to gaseous nitrogen continuously under the synergistic effects of anode catalysis,conductive particles and chloride ions,which promotes the relatively complete degradation of nitrate nitrogen,and the degradation of nitrate nitrogen and total nitrogen was significantly improved.

关 键 词：硝态氮 塑料粒子电极 三维电极反应器 

分 类 号：X703[环境科学与工程—环境工程]