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Author:

Cui, Huihui (Cui, Huihui.) | Zhang, Liang (Zhang, Liang.) | Zhang, Qiong (Zhang, Qiong.) | Li, Xiyao (Li, Xiyao.) | Peng, Yongzhen (Peng, Yongzhen.) (Scholars:彭永臻) | Wang, Chuanxin (Wang, Chuanxin.)

Indexed by:

EI Scopus SCIE

Abstract:

The biological nitrogen removal of municipal wastewater was successfully improved by integrating anammox in a step-feed sequencing biofilm batch reactor. Despite fluctuating influent carbon to nitrogen ratio (1.9-5.1) and decreasing temperature (24.1-16.3 celcius), nitrogen removal efficiency of 95.9 +/- 1.4 % and nitrogen removal rate of 0.23 +/- 0.02 kg N/(m3.d) were successfully maintained without requirement of external carbon sources. The advanced removal performance was mainly attributed to the enhanced anammox. Anammox bacteria presented a high relative abundance (42.9% in biofilms, 1.5% in flocs) and anammox activity was as high as 5.42 +/- 0.12 mg N/(g volatile suspended solids.h). Further analysis suggested that flexible control of influent organic and ammonium through step-feeding could provide multiple substrate supply for anammox reaction, potentially resulting in stable combination of anammox with hybrid-nitrite-shunt processes. Overall, this study provides a promising anammox-related application with simple-control step-feed strategy for enhanced and stable nitrogen removal from carbon-limited municipal wastewater.

Keyword:

Biological nitrogen removal Anammox Partial denitrification Step-feed process Low C N

Author Community:

  • [ 1 ] [Cui, Huihui]Beijing Univ Technol, Engn Res Ctr Beijing, Natl Engn Lab Adv Municipal Wastewater Treatment &, Beijing 100124, Peoples R China
  • [ 2 ] [Zhang, Liang]Beijing Univ Technol, Engn Res Ctr Beijing, Natl Engn Lab Adv Municipal Wastewater Treatment &, Beijing 100124, Peoples R China
  • [ 3 ] [Zhang, Qiong]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, Chuanxin]Guangdong Shouhui Lantian Engn & Technol Co Ltd, Xingguang Yingjing Commercial Ctr, Units 01 & 04,5-F,117 Shuiyin Rd, Guangzhou, Peoples R China

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Source :

BIORESOURCE TECHNOLOGY

ISSN: 0960-8524

Year: 2023

Volume: 381

1 1 . 4 0 0

JCR@2022

ESI Discipline: BIOLOGY & BIOCHEMISTRY;

ESI HC Threshold:16

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count: 7

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 2

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