Long-term nitritation performance of ammonium-rich landfill leachate

Hongwei Sun; Xintao LÜ; Yongzhen Peng; Shuying Wang; Juan Ma

doi:10.1016/j.cjche.2015.08.014

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Long-term nitritation performance of ammonium-rich landfill leachate

能源、资源与环境技术 | Updated：2026-01-06

- Long-term nitritation performance of ammonium-rich landfill leachate
- Chinese Journal of Chemical Engineering Vol. 23, Issue 11, Pages: 1888-1893(2015)
- Affiliations：
  
  2 Key Laboratory of Beijing Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology,Beijing,China,100124
- Author bio：
- Funds：
- DOI：10.1016/j.cjche.2015.08.014
  CLC：
- Published：2015
- Accepted：
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Hongwei Sun, Xintao LÜ, Yongzhen Peng, Shuying Wang, Juan Ma. Long-term nitritation performance of ammonium-rich landfill leachate[J]. Chin.J.Chem.Eng., 2015, 23(11): 1888-1893.
DOI：

Hongwei Sun, Xintao LÜ, Yongzhen Peng, Shuying Wang, Juan Ma. Long-term nitritation performance of ammonium-rich landfill leachate[J]. Chin.J.Chem.Eng., 2015, 23(11): 1888-1893. DOI： 10.1016/j.cjche.2015.08.014.

摘要

Abstract

This study presents a biological system combined upflow anaerobic sludge bed (UASB) with sequencing batch reactor (SBR) to treat ammonium-rich landfill leachate. The start-up and operation of the nitritation at low temperatures were investigated. The synergetic interaction of free ammonia (FA) inhibition on nitriteoxidizing bacteria (NOB) and process control was used to achieve nitritation in the SBR. It is demonstrated that nitritation was successfully started up in the SBR at low temperatures (14.0 ℃-18.2 ℃) by using FA inhibition coupled with process control

and then was maintained for 482 days at normal/low temperature. Although ammonia-oxidizing bacteria (AOB) and NOB co-existed within bacterial clusters in the SBR sludge

AOB were confirmed to be dominant nitrifying population species by scanning electron microscopic (SEM) observation and fluorescence in situ hybridization (FISH) analysis. This confirmation not only emphasized that cultivating the appropriate bacteria is essential for achieving stable nitritation performance

but it also revealed that NOB activity was strongly inhibited by FA rather than being eliminated altogether from the system.

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