Characteristics of rapid-biofiltering anammox reactor (RBAR) for low nitrogen wastewater treatment
| Autor: | Xin-Xin Lu, Wen-Huai Wang, Binjuan Li, Yi Wang, Jia-Jun Li, Xiaozhong Huang |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
0106 biological sciences
Environmental Engineering Hydraulic retention time Nitrogen chemistry.chemical_element Biomass Bioengineering 010501 environmental sciences Wastewater 01 natural sciences Bioreactors 010608 biotechnology Ammonium Compounds Anaerobiosis Waste Management and Disposal Effluent 0105 earth and related environmental sciences biology Sewage Renewable Energy Sustainability and the Environment General Medicine Pulp and paper industry biology.organism_classification chemistry Anammox Sewage treatment Oxidation-Reduction Bacteria |
| Zdroj: | Bioresource technology. 318 |
| ISSN: | 1873-2976 |
| Popis: | This research provides an important approach for rapid treatment of low nitrogen wastewater through anaerobic ammonium oxidation (anammox), which was realized in a rapid-biofiltering anammox reactor (RBAR). The operation mode of continuous upward flow and gradually shortened hydraulic retention time (HRT) accumulated anammox bacteria effectively in RBAR, where carmine anammox granular sludge and thick biofilm were co-existed, leading the biomass concentration and the specific anammox activity to reach 21.61 gSS/L and 0.82 gN/gVSS·d in the main functional zone. Moreover, the relative abundance of anammox bacteria in the whole reactor was more than 50%, and the relative abundance of Candidatus Brocadia in the biofilm of 20–47 cm zone reached 71.10%. Results showed that the removal rate and effluent concentration of total nitrogen remained stable at 86.24% and 14.20 mg/L (below 15 mg/L) averagely, under HRT of 32 min when the the nitrogen loading rate was 4.86 kgN/m3·d. |
| Databáze: | OpenAIRE |
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