摘要
富氮工业废水中难降解的氮杂环化合物加剧了碳氮比失衡,抑制了生物脱氮工艺中硝化反硝化过程,因而探究新型处理工艺是高效处理低C/N工业废水的必由之路。混合营养脱氮技术结合异养脱氮和自养脱氮的代谢路径,优化低C/N工业废水脱氮性能,进而实现低C/N工业废水处理提质增效。本文综述了混合营养脱氮工艺中铁介导生物脱氮、硫介导生物脱氮和菌藻共生脱氮工艺的作用机理、研究进展与影响因素,阐述了三种工艺特点及不同类型低C/N工业废水的适用性,并就三种混合营养脱氮工艺中存在的问题并结合当前研究方向,从优化电子供受体和代谢路径的角度提出增大电子容量、提高电子转移速率,结合电化学体系与Fe-S耦合增强协同代谢从而提升污染物代谢性能的建议。
Since refractory nitrogen heterocyclic compounds in nitrogen-rich industrial wastewater aggravates the imbalance of carbon to nitrogen ratio and inhibits the nitrification and denitrification process in biological nitrogen removal process,exploring a new treatment process has become the inevitable course to efficiently treat low C/N industrial wastewater.Mixotrophic technology combines the metabolic pathways of heterotrophic and autotrophic nitrogen removal to optimize the nitrogen removal performance of low C/N industrial wastewater and further realizes the quality and efficiency improvement of low C/N industrial wastewater treatment.This paper reviews the mechanism,advance and influencing factors of Fe-mediated biological nitrogen removal,sulfur-mediated biological nitrogen removal and bacteria-algal symbiosis processes in mixotrophic nitrogen removal processes,and expounds the characteristics of the three processes and the applicability of different types of low C/N industrial wastewater.From the perspective of optimizing electron donor,acceptor and metabolic pathways,it is proposed to increase the electron capacity and the electron transfer rate,combining the electrochemical and coupling Fe-S system to enhance the collaborative metabolism,and improve the metabolic performance of pollutants.
作者
鄢子鹏
郑梦启
王成业
陈国炜
王伟
袁守军
苏馈足
YAN Zipeng;ZHENG Mengqi;WANG Chengye;CHEN Guowei;WANG Wei;YUAN Shoujun;SU Kuizu(School of Civil Engineering,Hefei University of Technology,Hefei 230009,Anhui,China;Anhui Provincial Engineering Laboratory for Rural Water Environment and Resources,Hefei 230009,Anhui,China)
出处
《化工进展》
EI
CAS
CSCD
北大核心
2023年第12期6567-6575,共9页
Chemical Industry and Engineering Progress
基金
安徽省自然科学基金(2208085QE175)
中央高校基本科研业务费专项(JZ2022HGTA0337,JZ2022HGQA0170)
高速服务区污水处理及资源化关键技术研究项目(W2023JSKF0233)。
关键词
低C/N
工业废水
氮杂环化合物
混合营养
low C/N ratio
industrial wastewater
nitrogen-containing heterocycle
mixotrophic
