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底物浓度对反硝化MBBR处理反渗透浓水脱氮效能及脱氮基因的影响

李莉 闫国凯 王海燕 凌宇 赵远哲 王欢

李莉, 闫国凯, 王海燕, 凌宇, 赵远哲, 王欢. 底物浓度对反硝化MBBR处理反渗透浓水脱氮效能及脱氮基因的影响[J]. 环境工程技术学报, 2019, 9(4): 375-383. doi: 10.12153/j.issn.1674-991X.2019.04.260
引用本文: 李莉, 闫国凯, 王海燕, 凌宇, 赵远哲, 王欢. 底物浓度对反硝化MBBR处理反渗透浓水脱氮效能及脱氮基因的影响[J]. 环境工程技术学报, 2019, 9(4): 375-383. doi: 10.12153/j.issn.1674-991X.2019.04.260
LI Li, YAN Guokai, WANG Haiyan, LING Yu, ZHAO Yuanzhe, WANG Huan. Influence of substrate concentration on the nitrogen removal and relative genes of denitrifying MBBR for the treatment of reverse osmosis concentrate[J]. Journal of Environmental Engineering Technology, 2019, 9(4): 375-383. doi: 10.12153/j.issn.1674-991X.2019.04.260
Citation: LI Li, YAN Guokai, WANG Haiyan, LING Yu, ZHAO Yuanzhe, WANG Huan. Influence of substrate concentration on the nitrogen removal and relative genes of denitrifying MBBR for the treatment of reverse osmosis concentrate[J]. Journal of Environmental Engineering Technology, 2019, 9(4): 375-383. doi: 10.12153/j.issn.1674-991X.2019.04.260

底物浓度对反硝化MBBR处理反渗透浓水脱氮效能及脱氮基因的影响

doi: 10.12153/j.issn.1674-991X.2019.04.260
详细信息
    作者简介:

    李莉(1994—),女,硕士研究生,研究方向为水污染控制工程,lili02@craes.org.cn

    通讯作者:

    王海燕 E-mail: wanghy@craes.org.cn

  • 中图分类号: X703

Influence of substrate concentration on the nitrogen removal and relative genes of denitrifying MBBR for the treatment of reverse osmosis concentrate

More Information
    Corresponding author: Haiyan WANG E-mail: wanghy@craes.org.cn
  • 摘要: 针对污水处理厂生产高品质再生水过程中低压反渗透单元(DFRO)产生的反渗透浓水中TN浓度高和N O x - -N(N O 3 - -N+N O 2 - -N)占比高的问题,采用反硝化MBBR处理实际反渗透浓水,研究不同底物浓度下反硝化MBBR的脱氮效能和反硝化基因拷贝数的变化。结果表明:进水N O 3 - -N浓度为(8.70±6.34)~(24.23±8.69)mg/L,TN浓度为(28.43±5.69)~(44.10±7.37)mg/L时,随着浓度的升高N O 3 - -N和TN去除率保持平稳,但N O 3 - -N和TN去除速率上升,N O 2 - -N去除率和去除速率下降。进水N O 2 - -N浓度为(10.94±8.51)~(20.94±5.78)mg/L时,随着浓度的升高,N O 3 - -N和TN去除率及去除速率降低,N O 2 - -N去除率及去除速率上升。反硝化MBBR填料生物膜主要由球菌、杆菌和少量丝状菌组成;填料生物膜和底泥中各脱氮基因拷贝数随N O 3 - -N和TN浓度增加而增大,nirKnirSAnammox等基因拷贝数也随N O 2 - -N浓度增加而增大。

     

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  • 收稿日期:  2019-04-20
  • 刊出日期:  2019-07-20

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