The mixed/mixotrophic nitrogen removal for the effective and sustainable treatment of wastewater : From treatment process to microbial mechanism

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • Quan Zhang
  • Xijun Xu
  • Ruochen Zhang
  • Bo Shao
  • Kaili Fan
  • Lei Zhao
  • Xiaoming Ji
  • Nanqi Ren
  • Chuan Chen

Related Research Unit(s)

Detail(s)

Original languageEnglish
Article number119269
Journal / PublicationWater Research
Volume226
Online published17 Oct 2022
Publication statusPublished - 1 Nov 2022

Abstract

Biological nitrogen removal (BNR) is one of the most important environmental concerns in the field of wastewater treatment. The conventional BNR process based on heterotrophic nitrogen removal (HeNR) is suffering from several limitations, including external carbon source dependence, excessive sludge production, and greenhouse gas emissions. Through the mediation of autotrophic nitrogen removal (AuNR), mixed/mixotrophic nitrogen removal (MixNR) offers a viable solution to the optimization of the BNR process. Here, the recent advance and characteristics of MixNR process guided by sulfur-driven autotrophic denitrification (SDAD) and anammox are summarized in this review. Additionally, we discuss the functional microorganisms in different MixNR systems, shedding light on metabolic mechanisms and microbial interactions. The significance of MixNR for carbon reduction in the BNR process has also been noted. The knowledge gaps and the future research directions that may facilitate the practical application of the MixNR process are highlighted. Overall, the prospect of the MixNR process is attractive, and this review will provide guidance for the future implementation of MixNR process as well as deciphering the microbially metabolic mechanisms.

Research Area(s)

  • Anammox, Biological nitrogen removal, Mixotrophic, Sulfur-driven autotrophic denitrification

Citation Format(s)

The mixed/mixotrophic nitrogen removal for the effective and sustainable treatment of wastewater: From treatment process to microbial mechanism. / Zhang, Quan; Xu, Xijun; Zhang, Ruochen et al.
In: Water Research, Vol. 226, 119269, 01.11.2022.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review