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Wu Di, Wang Kai, Liu Yu, Liu Haishui, Tao Dan, Liu Jinquan, Zhou Qi. Upgrading and reconstruction engineering of low C/N aged-landfill leachate treatment[J]. Chinese Journal of Environmental Engineering, 2013, 7(3): 843-847.
Citation: Wu Di, Wang Kai, Liu Yu, Liu Haishui, Tao Dan, Liu Jinquan, Zhou Qi. Upgrading and reconstruction engineering of low C/N aged-landfill leachate treatment[J]. Chinese Journal of Environmental Engineering, 2013, 7(3): 843-847.
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Upgrading and reconstruction engineering of low C/N aged-landfill leachate treatment

  • 1.

    College of Environmental Science and Engineering,Tongji University, Shanghai 200092,China

  • 2.

    Beijing Sound Environmental Engineering Co. Ltd., Beijing 101102, China

  • Received Date: 27/12/2011
    Accepted Date: 16/11/2011
    Available Online: 18/03/2013
    Fund Project:
  • Two-stage A/O process combining with AS-SMBR and NF treatment systems were adopted to treat the aged-landfill leachate which had a BOD5/NH3-N propotion of 0.13~0.22,and the BOD5/COD was only 0.11. It was necessary to control DO value of biochemical system between 3~4 mg/L, reflux ratio at 400%~500%, and pH value≥7.2 at the same HRT. The index of main contaminant of landfill leachate and the changes of MLSS, pH and SV30 during commissioning were investigated. The results show that the removal rate of ammonia in biochemical system>99%, and average COD removal rate>50%,and the removal rate of COD in NF system≥91%, the concentration of ammonia <8 mg/L,simultaneously, coefficient of recovery was ≥75%, effluent of treatment system could reach the standard of GB16889-2008 completely and meet the needs of upgrading project.
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Upgrading and reconstruction engineering of low C/N aged-landfill leachate treatment

  • Received Date: 27/12/2011
  • Accepted Date: 16/11/2011
  • Available Online: 18/03/2013
Fund Project:

Abstract: Two-stage A/O process combining with AS-SMBR and NF treatment systems were adopted to treat the aged-landfill leachate which had a BOD5/NH3-N propotion of 0.13~0.22,and the BOD5/COD was only 0.11. It was necessary to control DO value of biochemical system between 3~4 mg/L, reflux ratio at 400%~500%, and pH value≥7.2 at the same HRT. The index of main contaminant of landfill leachate and the changes of MLSS, pH and SV30 during commissioning were investigated. The results show that the removal rate of ammonia in biochemical system>99%, and average COD removal rate>50%,and the removal rate of COD in NF system≥91%, the concentration of ammonia <8 mg/L,simultaneously, coefficient of recovery was ≥75%, effluent of treatment system could reach the standard of GB16889-2008 completely and meet the needs of upgrading project.

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