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Author:

Liu, Lifang (Liu, Lifang.) | Qi, Wei-Kang (Qi, Wei-Kang.) | Zhang, Li (Zhang, Li.) | Zhang, Shu-Jun (Zhang, Shu-Jun.) | Ni, Shou-Qing (Ni, Shou-Qing.) | Peng, Yongzhen (Peng, Yongzhen.) | Wang, Cong (Wang, Cong.)

Indexed by:

Scopus SCIE

Abstract:

During partial denitrification (PD), the rapid realization of significant nitrite accumulation and precise addition of organic carbon are critical for reducing costs. In this study, low C/N nitrate industrial wastewater was utilized to domesticate PD sludge. The application of specific strategies resulted in rapid nitrite accumulation and high nitrate-to-nitrite transformation rates (NTRs) of 94 %, 93 %, and 96 %. Rational adjustment of the C/N ratio and HRT according to microbial activity and effluent quality is essential for the success of PD. With the rapid transformation of sludge, the sedimentation performance improved, and the sludge aggregated into particles. Microbiological analyses showed that Thauera exhibited the highest relative abundance at 60 %, which significantly contributed to the stability of the system. The results of batch tests on the effects of C/N and NO3--N showed that the optimal C/N for PD varies under different NO3--N conditions. The pH effect tests showed that the NTR was maintained above 90 % at pH 6-9, with higher pH values promoting the accumulation of nitrite. This study highlights the potential of PD and its integration with other processes for the treatment of low-C/N wastewater.

Keyword:

Granular sludge Microbial community Partial denitrification Low C/N Nitrogen removal

Author Community:

  • [ 1 ] [Liu, Lifang]Beijing Univ Technol, Natl Engn Lab Adv Municipal Wastewater Treatment &, Key Lab Beijing Water Qual Sci & Water Environm Re, Beijing 100124, Peoples R China
  • [ 2 ] [Qi, Wei-Kang]Beijing Univ Technol, Natl Engn Lab Adv Municipal Wastewater Treatment &, Key Lab Beijing Water Qual Sci & Water Environm Re, Beijing 100124, Peoples R China
  • [ 3 ] [Zhang, Li]Beijing Univ Technol, Natl Engn Lab Adv Municipal Wastewater Treatment &, Key Lab Beijing Water Qual Sci & Water Environm Re, Beijing 100124, Peoples R China
  • [ 4 ] [Zhang, Shu-Jun]Beijing Univ Technol, Natl Engn Lab Adv Municipal Wastewater Treatment &, Key Lab Beijing Water Qual Sci & Water Environm Re, Beijing 100124, Peoples R China
  • [ 5 ] [Peng, Yongzhen]Beijing Univ Technol, Natl Engn Lab Adv Municipal Wastewater Treatment &, Key Lab Beijing Water Qual Sci & Water Environm Re, Beijing 100124, Peoples R China
  • [ 6 ] [Wang, Cong]Beijing Univ Technol, Natl Engn Lab Adv Municipal Wastewater Treatment &, Key Lab Beijing Water Qual Sci & Water Environm Re, Beijing 100124, Peoples R China
  • [ 7 ] [Zhang, Shu-Jun]Beijing Drainage Grp Co Ltd, Beijing 100044, Peoples R China
  • [ 8 ] [Wang, Cong]Beijing Drainage Grp Co Ltd, Beijing 100044, Peoples R China
  • [ 9 ] [Ni, Shou-Qing]Shandong Univ, Sch Environm Sci & Engn, Shandong Key Lab Environm Proc & Hlth, Shandong Prov Key Lab Water Pollut Control & Resou, Qingdao 266237, Shandong, Peoples R China

Reprint Author's Address:

  • [Wang, Cong]Beijing Univ Technol, Natl Engn Lab Adv Municipal Wastewater Treatment &, Key Lab Beijing Water Qual Sci & Water Environm Re, Beijing 100124, Peoples R China;;

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Source :

JOURNAL OF WATER PROCESS ENGINEERING

ISSN: 2214-7144

Year: 2024

Volume: 60

7 . 0 0 0

JCR@2022

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count: 2

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 1

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