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Author:

Zhang, Fangzhai (Zhang, Fangzhai.) | Ren, Shang (Ren, Shang.) | Liang, Haoran (Liang, Haoran.) | Wang, Zhaozhi (Wang, Zhaozhi.) | Yan, Ying (Yan, Ying.) | Wang, Jiahui (Wang, Jiahui.) | Peng, Yongzhen (Peng, Yongzhen.) (Scholars:彭永臻)

Indexed by:

EI Scopus SCIE

Abstract:

The application of anaerobic ammonia oxidation (Anammox) is of great significance due to its eco-friendly potential. Besides conventional nitrite-dependent Anammox (N-Anammox), sulfate can also serve as an electron acceptor for ammonia oxidation under anaerobic conditions (S-Anammox). For the first time, an innovative process integrating partial nitrification, N-Anammox, and S-Anammox (P-NA/SA) in one single system, was applied herein to treat mature landfill leachate (1079.6 mg/L NH4+-N, 1584.4 mg/L SO42--S) with oxic/anoxic operation mode. After 180 days of continuous operation, the nitrogen and sulfate removal efficiencies of 95.7% and 24.3%, respectively, were obtained. Importantly, valuable elemental sulfur was recovered with an average efficiency of 21.9%. Isotope analysis confirmed that N-Anammox and S-Anammox contributed to 65.6% and 27.5% of total inorganic nitrogen removal, respectively. Furthermore, S-Anammox was identified as a step-wise bioprocess, with biologically generated NO2--N and S2- as intermediates. With enhancement of S-Anammox, partial nitrification pretreatment-step for nitrite generation in oxic stage became less necessary, leading to a remarkable 44% saving in aeration energy consumption. The Anammox bacteria gene (hydrazine synthase, HzsB) was highly abundant (1.2-2.5 x 10(8) copies/g center dot SS), with the dominant Anammox genus transforming from Candidatus_Kuenenia (4.6%-> 2.1%) to Candidatus_Brocadia (0.3%-> 3.2%). Anammox-mediated biotechnology by coupling N-Anammox and S-Anammox offers new insights into sustainable treatment of ammonia- and sulfate-containing wastewater.

Keyword:

Mature landfill leachate S-Anammox N-Anammox Efficient nitrogen removal Elemental sulfur recovery

Author Community:

  • [ 1 ] [Zhang, Fangzhai]Beijing Univ Technol, Natl Engn Lab Adv Municipal Wastewater Treatment &, Engn Res CFenter Beijing, Beijing 100124, Peoples R China
  • [ 2 ] [Ren, Shang]Beijing Univ Technol, Natl Engn Lab Adv Municipal Wastewater Treatment &, Engn Res CFenter Beijing, Beijing 100124, Peoples R China
  • [ 3 ] [Liang, Haoran]Beijing Univ Technol, Natl Engn Lab Adv Municipal Wastewater Treatment &, Engn Res CFenter Beijing, Beijing 100124, Peoples R China
  • [ 4 ] [Wang, Zhaozhi]Beijing Univ Technol, Natl Engn Lab Adv Municipal Wastewater Treatment &, Engn Res CFenter Beijing, Beijing 100124, Peoples R China
  • [ 5 ] [Yan, Ying]Beijing Univ Technol, Natl Engn Lab Adv Municipal Wastewater Treatment &, Engn Res CFenter Beijing, Beijing 100124, Peoples R China
  • [ 6 ] [Wang, Jiahui]Beijing Univ Technol, Natl Engn Lab Adv Municipal Wastewater Treatment &, Engn Res CFenter Beijing, Beijing 100124, Peoples R China
  • [ 7 ] [Peng, Yongzhen]Beijing Univ Technol, Natl Engn Lab Adv Municipal Wastewater Treatment &, Engn Res CFenter Beijing, Beijing 100124, Peoples R China
  • [ 8 ] [Peng, Yongzhen]Beijing Univ Technol, Beijing 100124, Peoples R China

Reprint Author's Address:

  • [Peng, Yongzhen]Beijing Univ Technol, Beijing 100124, Peoples R China;;

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Source :

JOURNAL OF CLEANER PRODUCTION

ISSN: 0959-6526

Year: 2023

Volume: 399

1 1 . 1 0 0

JCR@2022

ESI Discipline: ENGINEERING;

ESI HC Threshold:19

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count: 8

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 4

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