Advanced removal of organic and nitrogen from ammonium-rich landfill leachate using an anaerobic-aerobic system

doi:10.1016/j.cjche.2014.03.007

Chin.J.Chem.Eng. ›› 2015, Vol. 23 ›› Issue (6): 1047-1051.DOI: 10.1016/j.cjche.2014.03.007

• ENERGY, RESOURCES AND ENVIRONMENTAL TECHNOLOGY • Previous Articles Next Articles

Advanced removal of organic and nitrogen from ammonium-rich landfill leachate using an anaerobic-aerobic system

Hongwei Sun¹, Huanan Zhao¹, Baoxia Bai³, Yuying Chen¹, Qing Yang², Yongzhen Peng²

1 School of Environmental and Municipal Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China;
2 Key Laboratory of Beijing Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing 100124, China;
3 Disease Prevention and Control Office of Urumqi Railway Bureau, Urumqi 830010, China

Received:2013-06-08 Revised:2014-03-18 Online:2015-07-09 Published:2015-06-28
Contact: Hongwei Sun
Supported by:
Supported by the National Natural Science Foundation of China (51168028, 51168027) and Science and Technique Foundation Project for Youth of Gansu Province (1107RJYA279).

Advanced removal of organic and nitrogen from ammonium-rich landfill leachate using an anaerobic-aerobic system

Hongwei Sun¹, Huanan Zhao¹, Baoxia Bai³, Yuying Chen¹, Qing Yang², Yongzhen Peng²

1 School of Environmental and Municipal Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China;
2 Key Laboratory of Beijing Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing 100124, China;
3 Disease Prevention and Control Office of Urumqi Railway Bureau, Urumqi 830010, China

通讯作者: Hongwei Sun
基金资助:
Supported by the National Natural Science Foundation of China (51168028, 51168027) and Science and Technique Foundation Project for Youth of Gansu Province (1107RJYA279).

Abstract

Abstract: A novel system coupling an up-flow anaerobic sludge blanket (UASB) and sequencing batch reactor (SBR) was introduced to achieve advanced removal of organic and nitrogen from ammonium-rich landfill leachate. UASB could remove 88.1% of the influent COD at a volumetric loading rate of 6.8 kg COD·m^-3·d^-1. Nitritation- denitritation was responsible for removing 99.8% of NH₄⁺-N and 25% of total nitrogen in the SBR under alternating aerobic/anoxic modes. Simultaneous denitritation and methanogenesis in the UASB enhanced COD and TN removal, and replenished alkalinity consumed in nitritation. For the activated sludge of SBR, ammonia oxidizing bacteria were preponderant in nitrifying population, indicated by fluorescence in sit hybridization (FISH) analysis. The Monod equation is appropriate to describe the kinetic behavior of heterotrophic denitrifying bacteria, with its kinetic parameters determined from batch experiments.

Key words: Landfill leachate, Nitrogen removal, Denitritation, Monod model, Fluorescence in sit hybridization

摘要： A novel system coupling an up-flow anaerobic sludge blanket (UASB) and sequencing batch reactor (SBR) was introduced to achieve advanced removal of organic and nitrogen from ammonium-rich landfill leachate. UASB could remove 88.1% of the influent COD at a volumetric loading rate of 6.8 kg COD·m^-3·d^-1. Nitritation– denitritation was responsible for removing 99.8% ofNH₄⁺-N and 25% of total nitrogen in the SBR under alternating aerobic/anoxic modes. Simultaneous denitritation and methanogenesis in the UASB enhanced COD and TN removal, and replenished alkalinity consumed in nitritation. For the activated sludge of SBR, ammonia oxidizing bacteria were preponderant in nitrifying population, indicated by fluorescence in sit hybridization (FISH) analysis. The Monod equation is appropriate to describe the kinetic behavior of heterotrophic denitrifying bacteria, with its kinetic parameters determined from batch experiments.

关键词: Landfill leachate, Nitrogen removal, Denitritation, Monod model, Fluorescence in sit hybridization

Hongwei Sun, Huanan Zhao, Baoxia Bai, Yuying Chen, Qing Yang, Yongzhen Peng. Advanced removal of organic and nitrogen from ammonium-rich landfill leachate using an anaerobic-aerobic system[J]. Chin.J.Chem.Eng., 2015, 23(6): 1047-1051.

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Advanced removal of organic and nitrogen from ammonium-rich landfill leachate using an anaerobic-aerobic system

Advanced removal of organic and nitrogen from ammonium-rich landfill leachate using an anaerobic-aerobic system

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