A Comprehensive Review on Wastewater Nitrogen Removal and Its Recovery Processes

Yifan Zhou, Yingying Zhu (), Jinyuan Zhu, Chaoran Li and Geng Chen
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Yifan Zhou: Faculty of Maritime and Transportation, Ningbo University, Ningbo 315211, China
Yingying Zhu: Faculty of Maritime and Transportation, Ningbo University, Ningbo 315211, China
Jinyuan Zhu: Faculty of Maritime and Transportation, Ningbo University, Ningbo 315211, China
Chaoran Li: Faculty of Maritime and Transportation, Ningbo University, Ningbo 315211, China
Geng Chen: Faculty of Maritime and Transportation, Ningbo University, Ningbo 315211, China

IJERPH, 2023, vol. 20, issue 4, 1-27

Abstract: Discharging large amounts of domestic and industrial wastewater drastically increases the reactive nitrogen content in aquatic ecosystems, which causes severe ecological stress and biodiversity loss. This paper reviews three common types of denitrification processes, including physical, chemical, and biological processes, and mainly focuses on the membrane technology for nitrogen recovery. The applicable conditions and effects of various treatment methods, as well as the advantages, disadvantages, and influencing factors of membrane technologies, are summarized. Finally, it is proposed that developing effective combinations of different treatment methods and researching new processes with high efficiency, economy, and energy savings, such as microbial fuel cells and anaerobic osmotic membrane bioreactors, are the research and development directions of wastewater treatment processes.

Keywords: wastewater; nitrogen removal; environment; waste treatment; nitrogen recovery (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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