Process performance and anammox community diversity in a deammonification reactor under progressive nitrogen loading rates for swine wastewater treatment
| Autor: | Camila Ester Hollas, Angélica Chini, Bruno Venturin, Adriana Mércia Guaratini Ibelli, Airton Kunz, Gabriela Bonassa, Maurício Egídio Cantão, Alice Chiapetti Bolsan, Fabiane Goldschmidt Antes |
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| Rok vydání: | 2020 |
| Předmět: |
0106 biological sciences
Environmental Engineering Nitrogen Swine Microorganism Biomass Continuous stirred-tank reactor chemistry.chemical_element Bioengineering 010501 environmental sciences Wastewater 01 natural sciences Ammonia chemistry.chemical_compound Bioreactors 010608 biotechnology Animals Ammonium Anaerobiosis Waste Management and Disposal 0105 earth and related environmental sciences Sewage Renewable Energy Sustainability and the Environment General Medicine Pulp and paper industry chemistry Anammox Digestate Oxidation-Reduction |
| Zdroj: | Bioresource technology. 311 |
| ISSN: | 1873-2976 |
| Popis: | The performance of a deammonification reactor fed with increasing nitrogen loading rates (NLR) was evaluated. The digestate from a continuous stirred tank reactor (CSTR) treating sludge from a swine production unit was diluted to provide different ammonia concentrations. The biomass samples from the end of each experimental phase were analyzed for microorganism community evaluation. The results proved that deammonification system supported a NLR up to 3.27 ± 0.13 g N L−1 d−1 with nitrogen removal efficiency of 83%. The specific ammonia consumption rate (µNH3-N) did not decrease up to this NLR proving the stability of reactor performance. Anammox bacteria genus shifted along the experiment and at the end the predominant anammox bacteria found in the reactor was candidatus Brocadia. Finally, it was proved that a deammonification reactor for nitrogen removal from CSTR digestate could be easily controlled only by monitoring pH and dissolved oxygen. |
| Databáze: | OpenAIRE |
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