高炉粉尘基臭氧催化微电解填料对垃圾渗滤液的处理:与不同填料对比研究  

Treatment of landfill leachate with blast furnace dust-based ozone-catalyzed micro-electrolysis filler:A comparative study with different fillers

作　　者：郭紫荆 贾辉[1,2,3] 石晓雪 郭佳然 程志杨 孟霞[3] 王捷[1,2] GUO Zijing;JIA Hui;SHI Xiaoxue;GUO Jiaran;CHENG Zhiyang;MENG Xia;WANG Jie(State Key Laboratory of Separation Membranes and Membrane Processes,Tiangong University,Tianjin 300387;School of Environmental Science and Engineering,Tiangong University,Tianjin 300387;State Key Laboratory of Biobased Material and Green Papermaking,Qilu University of Technology,Shandong Academy of Science,Jinan 250353)

机构地区：[1]天津工业大学分离膜与膜过程国家重点实验室,天津300387 [2]天津工业大学环境科学与工程学院,天津300387 [3]齐鲁工业大学(山东省科学院)生物基材料与绿色造纸国家重点实验室,济南250353

出　　处：《环境科学学报》2022年第7期389-397,共9页Acta Scientiae Circumstantiae

基　　金：生物基材料与绿色造纸国家重点实验室开放基金(No.KF201919);天津市研究生科研创新项目(No.2020YJSS041)。

摘　　要：制备了高炉粉尘基微电解(BFD-IE)填料,在臭氧催化的条件下降解垃圾渗滤液,并与商业臭氧催化填料和TEMPO-Cu分子筛填料的处理效果进行对比.采用扫描电镜(SEM)、能谱分析(EDS)和X射线衍射(XRD)等技术对BFD-IE填料和另外两种不同填料进行表征,并对比了三者对垃圾渗滤液中COD和NH_(4)^(+)-N的去除效果.结果表明,在相同的臭氧浓度(20 mg∙L^(-1))和反应时间下,BFD-IE填料对COD的去除效果(61.3%)要优于商业臭氧催化填料(50.9%)和TEMPO-Cu分子筛填料(39.1%);但对NH_(4)^(+)-N的去除效果存在差异,TEMPO-Cu分子筛填料在20 mg∙L^(-1)臭氧浓度下反应10 min即可实现74.9%的去除率,高于BFD-IE填料(32.7%).此外,经臭氧催化BFD-IE填料处理后的垃圾渗滤液,可生化性显著提升(从0.07提升至0.63),明显优于其他两种填料(0.29和0.39).最后,借助电化学技术和ESR技术,证明了臭氧催化高炉粉尘基填料体系中存在微电解作用.同时,借助电子转移和臭氧催化的作用可以利用垃圾渗滤液高氯离子浓度的特点,实现氨氮的同步去除.BFD-IE填料与臭氧催化之间存在良好的协同作用,并且制作成本低,为高炉粉尘的资源回收再利用及无害化处理提供了有效的途径.In this paper,blast furnace dust-based micro-electrolysis(BFD-IE)fillers were prepared to degrade landfill leachate under ozone-catalyzed conditions and compared with the treatment effects of commercial ozone-catalyzed fillers and TEMPO-Cu molecular sieve fillers.Scanning electron microscope(SEM),energy dispersive spectrometer(EDS)and X-ray diffraction(XRD)techniques were used to characterize the BFD-IE fillers and two different fillers.Comparison of the three effects on the removal of COD and NH_(4)^(+)-N in the landfill leachate,the results show that under the same ozone concentration(20 mg∙L^(-1))and reaction time,the removal effect of BFD-IEfiller on COD(61.3%)is better than commercial ozone catalytic filler(50.9%)and TEMPO-Cu molecular sieve filler(39.1%).But the removal effect of NH_(4)^(+)-N is different.The TEMPO-Cu molecular sieve filler can achieve a removal rate of 74.9%at a concentration of 20 mg∙L^(-1) ozone for 10 minutes,which is higher than the BFD-IE filler(32.7%).In addition,landfill leachate treated with ozone-catalyzed BFD-IE fillers showed a significant increase in biochemical properties(from 0.07 to 0.63),which was obviously better than the other two fillers(0.29 and 0.39).Finally,with the help of electrochemical technology and ESR technology,the presence of micro-electrolysis in the system was demonstrated.At the same time,with the help of electron transfer and ozone catalysis,the high chloride ion concentration of the landfill leachate can be used to achieve the removal of NH_(4)^(+)-N.There is a good synergy between the BFD-IE filler and ozone catalysis,and the low production cost provides an effective way for the resource recycling and harmless treatment of blast furnace dust.

关 键 词：高炉粉尘 微电解 臭氧催化 垃圾渗滤液 

分 类 号：X705[环境科学与工程—环境工程]