High-rate nitrogen removal from anaerobic digester liquor using an up-flow anammox reactor with polyethylene sponge as a biomass carrier(ENVIRONMENTAL BIOTECHNOLOGY)

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概要

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• Here, the stable performance of nitrogen removal from digester liquor after partial nitrification was experimentally demonstrated in an up-flow anammox reactor with polyethylene sponge (PE sponge) as a biomass carrier. A high nitrogen loading rate of 8.4kg-N/m^3/day with a TN removal rate of 7.6kg-N/m^3/day was obtained in this study, indicating PE sponge carrier is effective to attain high nitrogen removal performance. This high NLR should be mainly attributed to the successfully operational strategy, the biomass carrier with strong adsorption as well as the functional microbial community. The reaction ratio of NH_4^+:NO_2^-:NO_3^- using the anaerobic digester liquor as feeding media was 1:1.09:0.14. In addition, the channeling phenomenon was investigated in this study, and the problem could be solved through keeping the sludge bed lower than 2/3 of the effective height of the reactor. Furthermore, the settling property of the anammox granules was enhanced significantly and the bacteria community was verified by DNA analysis. The new species of anammox bacteria (kumadai-1) and KSU-1 were confirmed to be the predominant species after stable anammox performance was obtained.

著者

• Zhang Li

  Graduate School of Science and Technology, Kumamoto University

• Yang Jiachun

  Graduate School of Science and Technology, Kumamoto University

• Li Zhigang

  Graduate School of Science and Technology, Kumamoto University

• Fujii Takao

  Department of Applied Life Science, Faculty of Engineering, Sojo University

• Zhang Wenjie

  College of Environmental Science and Engineering, Guilin University of Technology

• Hira Daisuke

  Graduate School of Science and Technology, Kumamoto University

• Zhang Li

  Graduate School Of Science And Technology Kumamoto University

• Furukawa K

  Department Of Civil Engineering And Architecture Faculty Of Engineering Kumamoto University

• Furukawa Kenji

  Graduate School Of Sci. And Technol. Kumamoto Univ. 2-39-1 Kurokami Kumamoto 860-8555 Jpn

• FURUKAWA Kenji

  Department of Civil Engineering and Architecture, Faculty of Engineering, Kumamoto University

• Hira Daisuke

  Graduate School Of Science And Technology Kumamoto University

• Zhang Wenjie

  College Of Environmental Science And Engineering Guilin University Of Technology

• Fujii Takao

  Department Of Applied Life Science Faculty Of Biotechnology And Life Science Sojo University

• Yang Jiachun

  Graduate School Of Science And Technology Kumamoto University

• Fujii Takao

  Department Of Applied Life Science Faculty Of Engineering Sojo University

• Furukawa Kenji

  Department Of Applied Life Science Faculty Of Engineering Sojo University

• Zhang Li

  Graduate School Of Information Sciences Tohoku University

• Zhang Li

  Graduate School of Global Information and Telecommunication Studies

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