Achieving partial denitrification-anammox in biofilter for advanced wastewater treatment
Recently, partial denitrification (PDN) - anaerobic ammonium oxidation (anammox) process has been widely studied in activated sludge for nitrate wastewater treatment. However, achieving PDN-Anammox in biofilter for domestic wastewater treatment was never reported. In this study, two lab-scale PDN bi...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2020-05-01
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| Series: | Environment International |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0160412019340103 |
| _version_ | 1811194624012713984 |
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| author | Bin Cui Qing Yang Xiuhong Liu Wenjun Wu Zhibin Liu Pengchao Gu |
| author_facet | Bin Cui Qing Yang Xiuhong Liu Wenjun Wu Zhibin Liu Pengchao Gu |
| author_sort | Bin Cui |
| collection | DOAJ |
| description | Recently, partial denitrification (PDN) - anaerobic ammonium oxidation (anammox) process has been widely studied in activated sludge for nitrate wastewater treatment. However, achieving PDN-Anammox in biofilter for domestic wastewater treatment was never reported. In this study, two lab-scale PDN biofilter and Anammox biofilter were built up to treat simulated domestic wastewater. The results showed that stable nitrogen removal performance was kept with averaged effluent nitrogen of 10.2 mg/L. Stable nitrite accumulation performance was achieved with low abundance of nitrite reductase gene, while influent composition influenced nitrogen transformation pathway in PDN biofilter. When treating domestic wastewater, nitrification and partial denitrification led to the higher nitrite accumulation ratio of 75.4%. The percentage contribution of anammox biofilter was 74.6% for nitrogen removal, and Candidatus Brocadia was dominant genus. After long-term operation, limited substrate concentration caused interspecific competition among various anammox bacteria, leading to an increasing proportion of Candidatus Brocadia fulgida. PDN-Anammox biofilter is a feasible process to advanced wastewater treatment, which could save aeration consumption and carbon source addition, and reduce sludge production. Keywords: Partial denitrification, Anammox, Microbial community structure, Functional gene, Nitrite accumulation |
| first_indexed | 2024-04-12T00:29:50Z |
| format | Article |
| id | doaj.art-4dff51513dcb49caa6ae9983dab05d5c |
| institution | Directory Open Access Journal |
| issn | 0160-4120 |
| language | English |
| last_indexed | 2024-04-12T00:29:50Z |
| publishDate | 2020-05-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Environment International |
| spelling | doaj.art-4dff51513dcb49caa6ae9983dab05d5c2022-12-22T03:55:23ZengElsevierEnvironment International0160-41202020-05-01138Achieving partial denitrification-anammox in biofilter for advanced wastewater treatmentBin Cui0Qing Yang1Xiuhong Liu2Wenjun Wu3Zhibin Liu4Pengchao Gu5National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology, Beijing University of Technology, Beijing 100124, PR ChinaNational Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology, Beijing University of Technology, Beijing 100124, PR China; Corresponding author.National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology, Beijing University of Technology, Beijing 100124, PR ChinaNational Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology, Beijing University of Technology, Beijing 100124, PR ChinaNational Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology, Beijing University of Technology, Beijing 100124, PR ChinaBeijing Drainage Grp Co. Ltd BDG, Beijing 100022, PR ChinaRecently, partial denitrification (PDN) - anaerobic ammonium oxidation (anammox) process has been widely studied in activated sludge for nitrate wastewater treatment. However, achieving PDN-Anammox in biofilter for domestic wastewater treatment was never reported. In this study, two lab-scale PDN biofilter and Anammox biofilter were built up to treat simulated domestic wastewater. The results showed that stable nitrogen removal performance was kept with averaged effluent nitrogen of 10.2 mg/L. Stable nitrite accumulation performance was achieved with low abundance of nitrite reductase gene, while influent composition influenced nitrogen transformation pathway in PDN biofilter. When treating domestic wastewater, nitrification and partial denitrification led to the higher nitrite accumulation ratio of 75.4%. The percentage contribution of anammox biofilter was 74.6% for nitrogen removal, and Candidatus Brocadia was dominant genus. After long-term operation, limited substrate concentration caused interspecific competition among various anammox bacteria, leading to an increasing proportion of Candidatus Brocadia fulgida. PDN-Anammox biofilter is a feasible process to advanced wastewater treatment, which could save aeration consumption and carbon source addition, and reduce sludge production. Keywords: Partial denitrification, Anammox, Microbial community structure, Functional gene, Nitrite accumulationhttp://www.sciencedirect.com/science/article/pii/S0160412019340103 |
| spellingShingle | Bin Cui Qing Yang Xiuhong Liu Wenjun Wu Zhibin Liu Pengchao Gu Achieving partial denitrification-anammox in biofilter for advanced wastewater treatment Environment International |
| title | Achieving partial denitrification-anammox in biofilter for advanced wastewater treatment |
| title_full | Achieving partial denitrification-anammox in biofilter for advanced wastewater treatment |
| title_fullStr | Achieving partial denitrification-anammox in biofilter for advanced wastewater treatment |
| title_full_unstemmed | Achieving partial denitrification-anammox in biofilter for advanced wastewater treatment |
| title_short | Achieving partial denitrification-anammox in biofilter for advanced wastewater treatment |
| title_sort | achieving partial denitrification anammox in biofilter for advanced wastewater treatment |
| url | http://www.sciencedirect.com/science/article/pii/S0160412019340103 |
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