Ítem
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Dalmau Figueras, Montserrat
Monclús Sales, Hèctor Gabarrón Fernández, Sara Rodríguez-Roda Layret, Ignasi Comas Matas, Joaquim |
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| Two experimental studies evaluated the effect of aerobic and membrane aeration changes on sludge properties, biological nutrient removal and filtration processes in a pilot plant membrane bioreactor. The optimal operating conditions were found at an aerobic dissolved oxygen set-point (DO) of 0.5mgO2L-1 and a membrane specific aeration demand (SADm) of 1mh-1, where membrane aeration can be used for nitrification. Under these conditions, a total flow reduction of 42% was achieved (75% energy reduction) without compromising nutrient removal efficiencies, maintaining sludge characteristics and controlled filtration. Below these optimal operating conditions, the nutrient removal efficiency was reduced, increasing 20% for soluble microbial products, 14% for capillarity suction time and reducing a 15% for filterability. Below this DO set-point, fouling increased with a transmembrane pressure 75% higher. SADm below 1mh-1 doubled the values of transmembrane pressure, without recovery after achieving the initial conditions | |
| http://hdl.handle.net/2072/249625 | |
| eng | |
| Elsevier | |
| Tots els drets reservats | |
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Bioreactors
Reactors de membrana Membrane reactors Aigües residuals -- Depuració -- Tractament biològic Sewage -- Purification -- Biological treatment Membranes (Tecnologia) Membranes (Technology) |
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| Towards integrated operation of membrane bioreactors : effects of aeration on biological and filtration performance | |
| info:eu-repo/semantics/article | |
| Recercat |
