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Author:

Jiang, Hao (Jiang, Hao.) | Wang, Zhong (Wang, Zhong.) | Ren, Shang (Ren, Shang.) | Qiu, Jingang (Qiu, Jingang.) | Li, Xiyao (Li, Xiyao.) | Peng, Yongzhen (Peng, Yongzhen.) (Scholars:彭永臻)

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EI Scopus SCIE PubMed

Abstract:

The two-stage partial nitrification (PN)-Anammox process, during long term treatment of high-ammonia nitrogen leachate, faces challenges such as the adaptation of nitrite oxidation bacteria (NOB) and failure of real-time control of pH. Resultant instabilities including NH4+-N and NO3- -N accumulation were overcome by culturing sludge fermentation liquid (SFL)-driven partial denitrification (PD) in situ in the Anammox process. Biodegradation of slowly biodegradable organics (SBO) in SFL created organics restriction condition, which limited the activity of denitrification bacteria and achieved its balance with Anammox bacteria. Produced NO3- -N is reduced to NO2- -N through PD, which further improved the removal of NH4+-N through Anammox. NO2- -N was utilized timely by Anammox bacteria, which avoid further reduction of NO2- -N to N2, and result in a high nitrate to nitrite transformation ratio (NTR) of 93.3%. Satisfactory nitrogen removal efficiency (NRE) and nitrogen removal rate (NRR) of 99.6% and 822.0 +/- 9.0 g N/(m3 center dot d) were obtained, respectively. Key genera related to degradation of SBO, PD and Anammox were enriched. The value of narG/(nirK+nirS) increased from 0.05 on day 1-0.15 on day 250. Combining SFL-driven PD with two-stage Anammox process provided a novel insight for applying this process to realize advanced nitrogen removal in practical engineering.

Keyword:

Two-stage Anammox Partial nitrification (PN) Sludge fermentation liquid Partial denitrification (PD) Landfill leachate

Author Community:

  • [ 1 ] [Jiang, Hao]Beijing Univ Technol, Engn Res Ctr Beijing, Natl Engn Lab Adv Municipal Wastewater Treatment, Beijing 100124, Peoples R China
  • [ 2 ] [Ren, Shang]Beijing Univ Technol, Engn Res Ctr Beijing, Natl Engn Lab Adv Municipal Wastewater Treatment, Beijing 100124, Peoples R China
  • [ 3 ] [Qiu, Jingang]Beijing Univ Technol, Engn Res Ctr Beijing, Natl Engn Lab Adv Municipal Wastewater Treatment, Beijing 100124, Peoples R China
  • [ 4 ] [Li, Xiyao]Beijing Univ Technol, Engn Res Ctr Beijing, Natl Engn Lab Adv Municipal Wastewater Treatment, Beijing 100124, Peoples R China
  • [ 5 ] [Peng, Yongzhen]Beijing Univ Technol, Engn Res Ctr Beijing, Natl Engn Lab Adv Municipal Wastewater Treatment, Beijing 100124, Peoples R China
  • [ 6 ] [Wang, Zhong]Harbin Inst Technol, State Key Lab Urban Water Resource & Environm, Harbin 150090, Peoples R China

Reprint Author's Address:

  • 彭永臻

    [Peng, Yongzhen]Beijing Univ Technol, Engn Res Ctr Beijing, Natl Engn Lab Adv Municipal Wastewater Treatment, Beijing 100124, Peoples R China

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Source :

JOURNAL OF HAZARDOUS MATERIALS

ISSN: 0304-3894

Year: 2021

Volume: 415

1 3 . 6 0 0

JCR@2022

ESI Discipline: ENGINEERING;

ESI HC Threshold:87

JCR Journal Grade:1

Cited Count:

WoS CC Cited Count: 39

SCOPUS Cited Count: 51

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 3

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