工业水处理 ›› 2024, Vol. 44 ›› Issue (6): 22-33. doi: 10.19965/j.cnki.iwt.2023-0417

• 专论与综述 • 上一篇    下一篇

硫基、铁基及硫-铁基自养反硝化技术研究进展

王婧(), 王宁, 韩严和(), 李再兴, 马雪姣, 王楠楠, 姜文斌   

  1. 北京石油化工学院环境工程系,北京 102617
  • 收稿日期:2024-03-18 出版日期:2024-06-20 发布日期:2024-06-18
  • 作者简介:

    王婧(1998— ),硕士。E-mail:

    韩严和,博士,教授。E-mail:

  • 基金资助:
    国家自然科学基金项目(21677018); 北京市自然科学基金-市教委联合项目(KZ2018100117024); 大学生研究训练计划项目(2022J00070); 北京石油化工学院交叉科研探索项目(BIPTCSF-22032205003/014)

Research progress of autotrophic denitrification technology of sulfur, iron and sulfur-iron based electron donors

Jing WANG(), Ning WANG, Yanhe HAN(), Zaixing LI, Xuejiao MA, Nannan WANG, Wenbin JIANG   

  1. Department of Environmental Engineering, Beijing Institute of Petrochemical Technology, Beijing 102617, China
  • Received:2024-03-18 Online:2024-06-20 Published:2024-06-18

摘要:

自养反硝化技术具有无需外加碳源、污泥产量低以及成本低等优势,是双碳背景下具有前景的低C/N废水的深度脱氮处理技术之一,而无机电子供体的选择是该技术能否广泛实际应用的关键。根据反硝化原理,硫基自养反硝化易产酸并会产生硫酸盐,铁基反硝化耗酸且会有亚硝酸盐积累,而硫-铁基耦合自养反硝化可以结合两者的特点,维持反应pH稳定,减少二次污染。基于以上分析了硫基、铁基以及硫-铁基作为电子供体的自养反硝化基本作用原理及特性,并阐述了基于各电子供体进行反硝化时的优势菌属,以期为硫基、铁基及硫-铁基耦合自养反硝化技术在提高脱氮效率并减少二次污染方面的研究提供参考。

关键词: 硫铁基, 电子供体, 自养反硝化, 脱氮

Abstract:

Autotrophic denitrification technology has the advantages of no additional carbon source, low sludge yield and low cost. It is one of the promising technologies for deep denitrification of low C/N wastewater under the dual-carbon background. The selection of inorganic electron donor is the key to its wide practical application. According to the principle of denitrification, sulfur autotrophic denitrification is easy to produce acid and sulfate, iron denitrification consumes acid and accumulates nitrite, whereas sulfur-iron coupling autotrophic denitrification can combine the characteristics of both to maintain stable reaction pH and reduce secondary pollution. In this paper, the principle and characteristics of autotrophic denitrification based on sulfur, iron and sulfur-iron as electron donors were analyzed, and the dominant bacteria under different electron donors were introduced. It was hoped to provide reference for improving nitrogen removal efficiency and reducing secondary pollution by sulfur based, iron based and sulfur-iron coupled autotrophic denitrification technologies.

Key words: sulfur-iron based, electron donor, autotrophic denitrification, denitrification

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