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- Title
Nitrogen removal characteristics of heterotrophic nitrification-aerobic denitrification bacterium Acinetobacter ZQ-A1 and community characteristics analysis of its application in pig farm wastewater.
- Authors
Cao, Ze; Huang, Feng; Zhang, Ruiyu; Zhao, Xiaoya; Wang, Yan; Wu, Yinbao; Liao, Xindi; Feng, Yaoyu; Ma, Jingyun; Lan, Tian
- Abstract
A heterotrophic nitrifying aerobic denitrifying (HN-AD) strain ZQ-A1 with excellent denitrification performance, identified as Acinetobacter, was isolated from simultaneous nitrification and denitrification (SND) craft. ZQ-A1 was capable of removing NH4+, NO2–, and NO3–; the 21-hour removal rates were 84.84%, 87.13%, and 92.63%. ZQ-A1 has the ability to treat mixed nitrogen sources. In addition, ZQ-A1 can be well applied to actual sewage. According to the analysis of microbial community characteristics, the relative abundance of Acinetobacter in the experimental group increased from 0.06% to 2.38%, which is an important reason for the removal rate of NH4+ exceeding 99% within 30 days. The results of KEGG function prediction showed that with the addition of ZQ-A1, the relative abundance of pathways related to bacterial metabolism, such as tricarboxylic acid cycle metabolism, was higher. The research expanded the thinking of HN-AD bacteria in actual production and laid a foundation for its application in sewage treatment.
- Subjects
SWINE farms; DENITRIFICATION; ACINETOBACTER; KREBS cycle; SEWAGE purification; NITROGEN removal (Water purification)
- Publication
Environmental Science & Pollution Research, 2023, Vol 30, Issue 47, p104029
- ISSN
0944-1344
- Publication type
Article
- DOI
10.1007/s11356-023-29556-9