Chemical Industry and Engineering Progress ›› 2021, Vol. 40 ›› Issue (5): 2730-2738.DOI: 10.16085/j.issn.1000-6613.2020-1178

• Biochemical and pharmaceutical engineering • Previous Articles     Next Articles

Effect of iron on nitrogen removal efficiency of anaerobic ammonium oxidation bacteria

LEI Xin(), YAN Rong, MU Yujie, ZHANG Yuancan, FU Zhimin()   

  1. Key Laboratory of Environmental Pollution Control & Waste Recycling in Inner Mongolia Autonomous Region, Inner Mongolia Coal Chemical Wastewater Treatment &Recycling Engineering Technology Research Center, School of Ecology and Environment, Inner Mongolia University, Hohhot 010021, Inner Mongolia, China
  • Received:2020-06-24 Online:2021-05-24 Published:2021-05-06
  • Contact: FU Zhimin

铁元素对厌氧氨氧化菌脱氮效能的影响

雷欣(), 闫荣, 慕玉洁, 章院灿, 付志敏()   

  1. 内蒙古大学生态与环境学院,内蒙古自治区环境污染控制与废物资源化重点实验室,内蒙古自治区煤化工废水处理与资源化工程技术研究中心,内蒙古 呼和浩特 010021
  • 通讯作者: 付志敏
  • 作者简介:雷欣(1995—),女,硕士研究生,研究方向为水污染控制。E-mail:184818252@qq.com
  • 基金资助:
    国家自然科学基金(51408320);内蒙古“一湖两海”科技重大专项项目(ZDZX2018054)

Abstract:

The anammox process is a green and efficient novel technology for the biological treatment of nitrogen pollution in water. However, the long generation time of the anammox bacteria and its highly environment sensitivity characteristics result in the slow start-up of the anammox system and low operational stability, which further limits practical applications of the anammox process. Iron is not only a ubiquitous metal element in the environment, but also an essential nutrient element for microbial growth. In the anammox system, both the valence state and dosage of iron could affect the microbial activity and nitrogen removal performance. Here, the effects of iron on the start-up of the anammox process and the nitrogen removal performance in the operation process were reviewed. Furthermore, the reaction pathways of iron and nitrogen, the relationship between the growth rate of anammox bacteria and formation of the particles, and the composition of microbial communities, under the presence of iron are analyzed. It could help to further understand the role of iron in microbial nitrogen removal systems and the involved mechanisms. In addition, it provides scientific guidance for the enhancement of microbial nitrogen removal processes and improvement of microbial activity in the engineering application through the introduce of iron.

Key words: anaerobic ammonia oxidation, iron element, nitrogen removal

摘要:

厌氧氨氧化工艺是治理水体氮污染的一种绿色、高效新型生物技术。然而,厌氧氨氧化菌世代时间长,对环境敏感性高,致使厌氧氨氧化系统启动缓慢、运行稳定性较低,进而导致厌氧氨氧化工艺在实际应用中受限。铁不仅是环境中普遍存在的金属元素,也是微生物生长所需的必要营养元素之一。本文综述了铁元素价态及投加量对基于厌氧氨氧化反应的废水脱氮工艺启动及运行过程中含氮污染物去除效果,分析铁元素存在时,铁/氮元素的反应途径、厌氧氨氧化菌生长速率、颗粒形成以及微生物群落组成演变等方面的作用关系,旨在深入探究和阐释元素铁对于厌氧氨氧化菌脱氮性能的内在作用机制,为实现工程化利用铁强化厌氧氨氧化系统脱氮过程、提高微生物活性提供科学指导。

关键词: 厌氧氨氧化, 铁元素, 脱氮

CLC Number: 

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