Simultaneous sludge minimization, biological phosphorous removal and membrane fouling mitigation in a novel plant layout for MBR
| Autor: | Gaspare Viviani, Daniele Di Trapani, Santo Fabio Corsino, Michele Torregrossa, Taissa Silva de Oliveira |
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| Přispěvatelé: | Santo Fabio Corsino, Taissa Silva de Oliveira, Daniele Di Trapani, Michele Torregrossa, Gaspare Viviani |
| Rok vydání: | 2019 |
| Předmět: |
Membrane fouling
Endogenous P-release Environmental Engineering Hydraulic retention time Nitrogen 0208 environmental biotechnology chemistry.chemical_element 02 engineering and technology 010501 environmental sciences Management Monitoring Policy and Law Membrane bioreactor 01 natural sciences Waste Disposal Fluid Nutrient Bioreactors Anaerobic reactor Sludge minimization Waste Management and Disposal 0105 earth and related environmental sciences Settore ICAR/03 - Ingegneria Sanitaria-Ambientale Sewage Chemistry Membranes Artificial Phosphorus General Medicine Pulp and paper industry Biological nutrients removal 020801 environmental engineering Membrane BioReactor Polyphosphate-accumulating organisms |
| Zdroj: | Journal of environmental management. 259 |
| ISSN: | 1095-8630 |
| Popis: | The integration of one anaerobic reactor in the mainstream (AMSR) of a pre-denitritication-MBR was evaluated with the aim to achieve simultaneous sludge minimization and phosphorous removal. The excess sludge production was reduced by 64% when the AMSR was operated under 8 h of hydraulic retention time (HRT). The highest nutrients removal performances referred to organic carbon (98%), nitrogen (90%) and phosphorous (97%) were obtained under 8 h of HRT. In contrast, prolonged anaerobic-endogenous conditions were found to be detrimental for all nutrients removal performances. Similarly, the lowest membrane fouling tendency (FR = 0.65∙1011 m−1 d−1) was achieved under 8 h of HRT, whereas it significantly increased under higher HRT. The highest polyphosphate accumulating organisms kinetics were achieved under HRT of 8 h, showing very high exogenous P-release (46.67 mgPO4-P gVSS−1 h−1) and P-uptake rates (48.6 mgPO4-P gVSS−1 h−1), as well as a not negligible P-release rate under endogenous conditions at low COD/P ratio (≈1). |
| Databáze: | OpenAIRE |
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