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Distinctive species in teraction patterns under high nitrite stress shape inefficient denitrifying phosphorus removal performance.
Abstract
Denitrifying phosphorus removal using nitrite as an electron acceptor is an innovative, resource-efficient approach for nitrogen and phosphorus removal. However, the inhibitory effects of nitrite on anoxic phosphorus uptake and process stability are unclear. This study investigated the total phosphorus removal performance under nitrite stress and analyzed microbiome responses in 186 sludge samples. The results indicated that the total phosphorus removal rates and dominant taxon abundance were highly similar under nitrite stress. High nitrite stress induced a community-state shift, leading to unstable dynamics and decreased total phosphorus removal. This shift resulted from increased species cooperation. Notably, the shared genera OLB8 and Zoogloea under non-inhibitory nitrite stress, suggesting their vital roles in mitigating nitrite stress by enhancing carbon and energy metabolism. The response patterns of these bacterial communities to high nitrite stress can guide the design and optimization of high-nitrogen wastewater reactors.
Authors (10) : Xue Wang, Guoyu Zhang, Aizhong Ding, En Xie, Qiuyang Tan, Yuzi Xing, Haoming Wu, Qi Tian, Yaoxin Zhang, Lei Zheng
Source : Bioresource technology
Article Information
| Year | 2023 |
| Type | Journal Article |
| DOI | 10.1016/j.biortech.2023.130269 |
| ISSN | 1873-2976 |
| Volume |
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