多相催化臭氧氧化-纳滤工艺污水深度净化研究  

Wastewater Advanced Purification by Integrating Heterogeneous Catalytic Ozonation and Nanofiltration Process

作　　者：马宁 刘操 黄涛[2] 王培京 李其军 

机构地区：[1]北京市水科学技术研究院流域水环境与生态技术北京市重点实验室,北京100048 [2]中国矿业大学(北京)化学与环境工程学院,北京100083

出　　处：《环境科学与技术》2014年第12期182-186,198,共6页Environmental Science & Technology

基　　金：科技创新基地培育与发展工程流域水环境与生态技术北京市重点实验室2012年度阶梯计划项目(Z121109009212050);国家科技重大专项水体污染控制与治理项目(2012ZX07203001)

摘　　要：以高吸附性能的活性炭纤维作为催化反应载体,建立了多相催化臭氧氧化-纳滤组合工艺,研究其对污水深度净化效果及其机理。结果表明,由于活性炭纤维的催化作用,显著提高了催化臭氧氧化反应效率,催化臭氧氧化单元单独运行5 h后对紫外吸收值(UVA254)和总有机碳(TOC)的去除率分别为68.2%和32.3%。组合工艺运行5 h后出水UVA254和TOC的去除率分别为98.7%和89.5%,对3类典型内分泌干扰物(如双酚A、萘及苯并[a]芘等)的去除率高达90%以上,均高于单独纳滤工艺的去除率。与单独纳滤工艺相比,单独运行5 h后纳滤膜通量下降23.8%,而组合工艺膜通量仅下降14.6%,体现了组合工艺具有改善出水水质和提高产水能力等多方面先进性。An integrated heterogeneous catalytic ozonation and nanofiltration process was established based on activated carbon fiber （ACF） with high adsorption capacity as catalyst. The effectiveness and mechanism of this process for wastewater advanced purification were investigated. Experimental results showed that 68.2% UVA254 removal and 32.3% TOC removal were obtained after 5h catalytic ozonation reaction respectively, mainly due to significant improvement on the efficiency of the catalytic oxidation reaction via ACF catalyst. Moreover, the integrated process achieved 98.7% UVA254 and 89.5% TOC removal after running for 5 h, and the corresponding three typical endocrine disruptors such as bisphenol A, naphthalene and benzo [a] pyrene removal reached higher than 90%, which are also higher than the removal by nanofiltration alone. Compared with 23.8% flux reduction by nanofiltration alone, membrane flux of integrated process decreased only 14.6% after running for 5 h. Therefore, it is evidently suggested thatintegrated catalytic ozonation and nanofiltration process has superior capability on improving both water quality and water production capacity.

关 键 词：催化臭氧氧化 活性炭纤维 纳滤 深度净化 再生水 

分 类 号：X703[环境科学与工程—环境工程]