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作者:

Li, Dong (Li, Dong.) | Chen, Hao (Chen, Hao.) | Gao, Xin (Gao, Xin.) | Zhang, Jie (Zhang, Jie.) (学者:张杰)

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EI Scopus SCIE

摘要:

The presence of nitrite-oxidizing bacteria (NOB) when treating low-strength ammonia wastewater was a challenge in the application of the PN/A process. The partial nitrification/ANAM-MOX/partial nitrification/ANAM-MOX (PN/A/PN/A) process based on multiple oxidations of ammonia was proposed to solve this problem. The influence of independent variables such as nitrite concentration was analyzed based on the response surface method (RSM). The model showed that nitrite concentration has an adverse impact on ammonia removal efficiency and nitrite accumulation rate. The model provided optimal parameters for the PN/A/PN/A process: the dissolved oxygen concentration was 0.60 mg/L, and the cycle duration was 90 min. Advanced nitrogen removal was achieved by maintaining the nitrite concentration below 10.0 mg/L. The nitrogen removal efficiency was 81.44 +/- 4.15 %, and the nitrogen removal rate was 0.18 +/- 0.02 kg N/(m(3).d). Potential functions of microorganisms were analyzed by functional annotation of prokaryotic taxa (FAPROTAX) and the correlation network analysis was performed.

关键词:

Response surface method nitrification/ANAMMOX Nitrite concentration Partial nitrification/ANAMMOX/partial Nitrogen removal

作者机构:

  • [ 1 ] [Li, Dong]Beijing Univ Technol, Key Lab Water Sci & Water Environm Recovery Engn, Beijing 100123, Peoples R China
  • [ 2 ] [Chen, Hao]Beijing Univ Technol, Key Lab Water Sci & Water Environm Recovery Engn, Beijing 100123, Peoples R China
  • [ 3 ] [Gao, Xin]Beijing Univ Technol, Key Lab Water Sci & Water Environm Recovery Engn, Beijing 100123, Peoples R China
  • [ 4 ] [Zhang, Jie]Beijing Univ Technol, Key Lab Water Sci & Water Environm Recovery Engn, Beijing 100123, Peoples R China
  • [ 5 ] [Zhang, Jie]Harbin Inst Technol, State Key Lab Urban Water Resource & Environm, Harbin 150090, Peoples R China

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来源 :

BIORESOURCE TECHNOLOGY

ISSN: 0960-8524

年份: 2022

卷: 361

1 1 . 4

JCR@2022

1 1 . 4 0 0

JCR@2022

ESI学科: BIOLOGY & BIOCHEMISTRY;

ESI高被引阀值:43

JCR分区:1

中科院分区:1

被引次数:

WoS核心集被引频次: 19

SCOPUS被引频次: 25

ESI高被引论文在榜: 0 展开所有

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