Effect of Mixed Liquor Volatile Suspended Solids on Membrane Fouling During Short and long-term Operation of Membrane Bioreactor
| Autor: | Edson Baltazar Estrada-Arriaga, Petia Mijaylova Nacheva, Liliana García-Sánchez |
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| Jazyk: | English<br />Spanish; Castilian |
| Rok vydání: | 2015 |
| Předmět: | |
| Zdroj: | Ingeniería y Ciencia, Vol 11, Iss 21 (2015) |
| Druh dokumentu: | article |
| ISSN: | 1794-9165 2256-4314 |
| DOI: | 10.17230/ingciencia.11.21.7 |
| Popis: | The aim of this study was to examine the impact of different Mixed Liquor Volatile Suspended Solids (MLVSS) concentrations on membrane fouling, in a submerged Membrane Bioreactor (MBR) at short and long-term MBR operation for wastewater treatment. Three laboratory-scale in a submerged MBR system were operated under critical flux, sub-critical flux, and an intermittent suction time and backwashing conditions. At shortterm MBR operation with mixed liquors of 4,200 and 6,150 mg MLVSS L-1, the hydraulic resistance of membranes followed a same trajectory with averages of 5.0E+12 m-1, whereas for 7,940 mg MLVSS L-1, a high resistance of up to 1.7E+13 m-1 was obtained. The result showed that high biomass concentrations decreased to permeability due to a bio-layer formed in the membrane surface and high Extracellular Polymeric Substance (EPS). PACS: 87.18.-h, 92.40.kc, 87.16.dj, 92.40.Qk, 47.63.-b |
| Databáze: | Directory of Open Access Journals |
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