Novel system configuration with activated sludge like-geometry to develop aerobic granular biomass under continuous flow
| Autor: | Anuska Mosquera-Corral, C. Cofré, Alba Pedrouso, N. Camus, José Luis Campos, A. Val del Río, J.P. Pavissich, Marisol Belmonte, Daniel Valenzuela-Heredia, P. Carrera |
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| Rok vydání: | 2018 |
| Předmět: |
0106 biological sciences
Environmental Engineering Materials science Sewage Renewable Energy Sustainability and the Environment Continuous flow Settling time Sludge volume index Biomass Bioengineering Geometry Sequencing batch reactor General Medicine System configuration 010501 environmental sciences Waste Disposal Fluid 01 natural sciences Aerobiosis Bioreactors Activated sludge Settling 010608 biotechnology Waste Management and Disposal 0105 earth and related environmental sciences |
| Zdroj: | Bioresource Technology. 267:778-781 |
| ISSN: | 0960-8524 |
| DOI: | 10.1016/j.biortech.2018.07.146 |
| Popis: | A novel continuous flow system with “flat geometry” composed by two completely mixed aerobic tanks in series and a settler was used to promote the formation of aerobic granular sludge. Making similarities of this system with a typical sequencing batch reactor (SBR), for aerobic granules cultivation, the value of the tank 1/tank 2 vol ratio and the biomass recirculation rate would correspond with the feast/famine length ratio and the length of the operational cycle, respectively, while the settler upflow liquid velocity imposed would be related to the settling time. From the three experiments performed the best results were obtained when the tank 1/tank 2 vol ratio was of 0.28, the sludge recycling ratio of 0.25 and the settler upflow velocity of 2.5 m/h. At these conditions the aggregates had settling velocities between 29 and 113 m/h, sludge volume index at 10 min (SVI10) of 70 mL/g TSS and diameters between 1.0 and 5.0 mm. |
| Databáze: | OpenAIRE |
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