摘要
由于厌氧生物处理技术具有产生剩余污泥少、可回收能源等优点而被广泛用于处理各种有机污染物,尤其在有毒、有害、难降解污染物的去除方面取得了良好的效果。然而,厌氧生物法的处理速率通常比较低,而氧化还原介体可通过自身不断的氧化和还原来传递电子,提高电子在氧化还原反应过程中的传递速率,从而促进污染物高效厌氧降解。醌类物质和腐殖酸是应用较多的氧化还原介体,在催化难降解污染物降解方面取得了一定效果。讨论了氧化还原介体的特点、作用机制,并总结了其对偶氮染料厌氧脱色、反硝化和多氯联苯厌氧降解的强化作用,提出了氧化还原介体未来的研究方向。
Anaerobic biological treatment technology has been widely used for treating various organic pollutants due to less excessive sludge and recyclable energy, especially, good performance in removal of poisonous, harmful and refractory pollutants.However, the treatment rate of anaerobic biological process is usually relatively low. Redox mediators can improve the electron transfer rate in the redox process through continuous oxidation and reduction, promoting anaerobic degradation of pollutants.Quinones and humic acids are frequently used as redox mediators, which have achieved certain effects in catalytically enhancing the degradation of refractory pollutants. The characteristics and mechanism of redox mediators are discussed in this study, and their enhancement effects on anaerobic decolorization of azo dyes, denitrification and anaerobic degradation of polychlorinated biphenyls are summarized. Moreover, the future research direction of redox media is also proposed.
作者
班巧英
刘琦
余敏
李建政
秦岩
BAN Qiaoying;LIU Qi;YU Min;LI Jianzheng;QIN Yan(College of Environment and Resource,Shanxi University,Taiyuan 030006,China;School of Environment,Harbin Institute of Technology,Harbin 150090,China)
出处
《科技导报》
CAS
CSCD
北大核心
2019年第21期88-96,共9页
Science & Technology Review
基金
国家自然科学基金项目(51708341)
山西省“青年三晋学者”支持计划项目
山西省高等学校优秀创新团队支持计划项目
山西省青年科技研究基金项目(201701D221215)
关键词
厌氧降解
氧化还原介体
电子传递
催化强化作用
anaerobic degradation
redox mediators
electron transformation
catalytic enhancement
作者简介
班巧英,副教授,研究方向为废水厌氧生物处理,电子信箱:banqiaoying@163.com。
