高级氧化技术在污泥减量化中的应用  

SLUDGE REDUCTION USING ADVANCED OXIDATION TECHNOLOGIES:A REVIEW

作　　者：郑尚基 王枫 巢昆[1] Pacelli Zitha ZHENG Shang-ji, WANG Feng, CHAO Kun, PACELLI Zithja(College of Electromechanical Engineering, Qingdao University of Science and Technology, Qingdao 266061, China)

机构地区：[1]青岛科技大学机电工程学院,山东青岛266061

出　　处：《环境工程》2018年第9期133-138,153,共7页Environmental Engineering

基　　金：国家“外专千人”基金.

摘　　要：污泥减量化是污泥处置过程中的首要问题。目前,传统污泥处理工艺仍面临污泥产量高、含固率低等问题,不能实现环境效益与经济效益相协调。高级氧化技术既可减少污泥干基产量,又可提高污泥脱水性能,在污泥处理领域备受关注。在简述Fenton试剂氧化、臭氧氧化、湿式空气氧化及超临界水氧化机理的基础上,重点论述了几种高级氧化技术对污泥干基产量及脱水性能的影响,并介绍了各种氧化法的运行条件或运行工况。最后探讨了各种高级氧化技术的优缺点,并指出今后污泥高级氧化的主要研究方向。分析表明,几种高级氧化技术不但可有效降低污泥中有机化合物含量或污泥悬浮固体浓度,减少污泥干基产量,而且可有效提高污泥的沉降性能及脱水性能,降低脱水污泥含水率。Recently, sludge reduction is the key to sludge disposal; however, the traditional sludge treatment processes can no longer be harmonious in balancing the benefits between environment and economy, with the high sludge yield and low solids content. Due to the advantage of reducing the dry solids and improving the dewaterability, advanced oxidation technology obtained the increasing attention in the field of sludge treatment. On the basis of mechanism explanation for Fenton oxidation, ozone oxidation, wet air oxidation and supercritical water oxidation, this paper reviewed the influence of advanced oxidation technologies on yield and dewaterability of sludge emphatically, and introduced the operating conditions. Finally, this paper made a comparison between the four technologies, and pointed out the research directions. This paper indicated that advanced oxidation technologies can not only reduce the content of organic compounds or the concentration of suspended solid, but also improve the settleability and dewaterability.

关 键 词：污泥减量化 FENTON氧化 臭氧氧化 湿空气氧化 超临界水氧化 有机化合物 

分 类 号：X703[环境科学与工程—环境工程]