The Summary of Nitritation Process in Mainstream Wastewater Treatment

Hongjun Zhao, Yan Guo (), Qunhui Wang, Ze Zhang, Chuanfu Wu, Ming Gao () and Feng Liu
Additional contact information
Hongjun Zhao: School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China
Yan Guo: School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China
Qunhui Wang: School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China
Ze Zhang: School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China
Chuanfu Wu: School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China
Ming Gao: School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China
Feng Liu: TUS-Environmental Science and Technology Development Corporation, Ltd., Beijing 100084, China

Sustainability, 2022, vol. 14, issue 24, 1-20

Abstract: The application of the mainstream partial nitritation/anammox (PN/A) process is promising due to the huge cost reduction compared to traditional biological nitrogen removal. However, the nitrite production rate (NPR) of a biological nitritation pre-treatment process is relatively lower than the nitrite consumption rate in a pure anammox reactor with a high nitrogen loading rate (NLR). Thus, the NPR is the rate-limiting step for operating the PN/A process with a higher NLR. Various studies have attempted to improve mainstream NPR. A comprehensive review of these processes is needed for the actual application of the PN/A process. This study focuses on: (1) various nitrite production processes that have emerged in recent years; (2) the main microbial species and characteristics involved in biological nitritation; (3) the existing problems and the N 2 O emission problem of these processes; and (4) a proposed novel and promising PN/A process facilitated with photocatalyst oxidation. This review is expected to provide references and a basis for the research on the nitritation step of the application of the mainstream PN/A process.

Keywords: nitrite production; nitritation; photocatalytic oxidation; mainstream wastewater; N 2 O emission; anammox (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

Downloads: (external link)
https://www.mdpi.com/2071-1050/14/24/16453/pdf (application/pdf)
https://www.mdpi.com/2071-1050/14/24/16453/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jsusta:v:14:y:2022:i:24:p:16453-:d:997815

Access Statistics for this article

Sustainability is currently edited by Ms. Alexandra Wu

More articles in Sustainability from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().