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作者:

Ma, Bin (Ma, Bin.) | Wang, Shuying (Wang, Shuying.) (学者:王淑莹) | Zhu, Guibing (Zhu, Guibing.) | Ge, Shijian (Ge, Shijian.) | Wang, Junmin (Wang, Junmin.) | Ren, Nanqi (Ren, Nanqi.) | Peng, Yongzhen (Peng, Yongzhen.) (学者:彭永臻)

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Scopus SCIE CSCD

摘要:

Denitrifying phosphorus accumulating organisms (DPAOs) using nitrite as an electron acceptor can reduce more energy. However, nitrite has been reported to have an inhibition on denitrifying phosphorus removal. In this study, the step-feed strategy was proposed to achieve low nitrite concentration, which can avoid or relieve nitrite inhibition. The results showed that denitrification rate, phosphorus uptake rate and the ratio of the phosphorus uptaken to nitrite denitrified (anoxic P/N ratio) increased when the nitrite concentration was 15 mg center dot L-1 after step-feeding nitrite. The maximum denitrification rate and phosphorus uptake rate was 12.73 mg NO (2) (-) -N center dot g MLSS-1 center dot h(-1) and 18.75 mg PO (4) (3-) -P center dot g MLSS-1 center dot h(-1), respectively. These rates were higher than that using nitrate (15 mg center dot(L-1)) as an electron acceptor. The maximum anoxic P/N ratio was 1.55 mg PO (4) (3-) P center dot mg NO (2) (-) -N-1. When the nitrite concentration increased from 15 to 20 mg NO (2) (-) -N center dot L-1 after addition of nitrite, the anoxic phosphorus uptake was inhibited by 64.85%, and the denitrification by DPAOs was inhibited by 61.25%. Denitrification rate by DPAOs decreased gradually when nitrite (about 20 mg center dot(L-1)) was added in the step-feed SBR. These results indicated that the step-feed strategy can be used to achieve denitrifying phosphorus removal using nitrite as an electron acceptor, and nitrite concentration should be maintained at low level (< 15 mg center dot(L-1) in this study).

关键词:

denitrification denitrifying phosphate accumulating organisms (DPAOs) enhanced biological phosphorus removal nitrite phosphorus uptake step-feed

作者机构:

  • [ 1 ] [Ma, Bin]Harbin Inst Technol, State Key Lab Urban Water Resource & Environm HIT, Harbin 150090, Peoples R China
  • [ 2 ] [Ren, Nanqi]Harbin Inst Technol, State Key Lab Urban Water Resource & Environm HIT, Harbin 150090, Peoples R China
  • [ 3 ] [Peng, Yongzhen]Harbin Inst Technol, State Key Lab Urban Water Resource & Environm HIT, Harbin 150090, Peoples R China
  • [ 4 ] [Ma, Bin]Beijing Univ Technol, Key Lab Beijing Water Qual Sci & Water Environm R, Beijing 100022, Peoples R China
  • [ 5 ] [Wang, Shuying]Beijing Univ Technol, Key Lab Beijing Water Qual Sci & Water Environm R, Beijing 100022, Peoples R China
  • [ 6 ] [Ge, Shijian]Beijing Univ Technol, Key Lab Beijing Water Qual Sci & Water Environm R, Beijing 100022, Peoples R China
  • [ 7 ] [Wang, Junmin]Beijing Univ Technol, Key Lab Beijing Water Qual Sci & Water Environm R, Beijing 100022, Peoples R China
  • [ 8 ] [Peng, Yongzhen]Beijing Univ Technol, Key Lab Beijing Water Qual Sci & Water Environm R, Beijing 100022, Peoples R China
  • [ 9 ] [Zhu, Guibing]Chinese Acad Sci, State Key Lab Environm Aquat Qual, Res Ctr Ecoenvironm Sci, Beijing 100085, Peoples R China

通讯作者信息:

  • 彭永臻

    [Peng, Yongzhen]Harbin Inst Technol, State Key Lab Urban Water Resource & Environm HIT, Harbin 150090, Peoples R China

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来源 :

FRONTIERS OF ENVIRONMENTAL SCIENCE & ENGINEERING

ISSN: 2095-2201

年份: 2013

期: 2

卷: 7

页码: 267-272

6 . 4 0 0

JCR@2022

ESI学科: ENVIRONMENT/ECOLOGY;

ESI高被引阀值:228

JCR分区:4

中科院分区:4

被引次数:

WoS核心集被引频次: 12

SCOPUS被引频次: 15

ESI高被引论文在榜: 0 展开所有

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