Study of Carbonaceous and Nitrogenous Pollutant Removal Efficiencies in a Hybrid Membrane Bioreactor
A hybrid membrane bioreactor (HMBR) comprises activated sludge (free biomass), a biofilm (supported biomass), and a membrane separation. A laboratory pilot-scale HMBR was operated for seven months with high organic loads of both carbonic and nitrogen pollutants. Several experiments were conducted to...
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| Format: | Article |
| Language: | English |
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Wiley
2017-01-01
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| Series: | Journal of Chemistry |
| Online Access: | http://dx.doi.org/10.1155/2017/4080847 |
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| author | Victor S. Ruys Kamel Zerari Isabelle Seyssiecq Nicolas Roche |
| author_facet | Victor S. Ruys Kamel Zerari Isabelle Seyssiecq Nicolas Roche |
| author_sort | Victor S. Ruys |
| collection | DOAJ |
| description | A hybrid membrane bioreactor (HMBR) comprises activated sludge (free biomass), a biofilm (supported biomass), and a membrane separation. A laboratory pilot-scale HMBR was operated for seven months with high organic loads of both carbonic and nitrogen pollutants. Several experiments were conducted to investigate the influence of the height of the packing bed (27 cm, 50 cm, and 0 cm) and the effect of the concentration of dissolved oxygen (DO) on the organic removal rate, total nitrogen removal rate (TN), and ammonium removal. The organic removal rate was always >95% and mostly >98%. The NH4+-N and TN removal rates were directly related to DO. NH4+-N removal rate reached 100% and was mostly >99% with a concentration of DO > 0.1 mg/L, whereas the NO3--N removal rate was differentially affected depending on the level of DO. The removal rate increased when the concentration of DO was optimal for simultaneous nitrification and denitrification, which was between 0.1 and 0.5 mg/l, and the TN removal rate was consequently high. The removal rate decreased when DO was high and denitrification was consequently low thereby reducing the TN removal rate. This implies that high levels of DO (>1 mg/L) limit the denitrification process and low levels of DO (<0.1 mg/L) limit the nitrification process and hence total nitrogen removal in the bioreactor. |
| format | Article |
| id | doaj-art-baafbb9e5dcf4e77afcb2d59c4eac8bf |
| institution | Kabale University |
| issn | 2090-9063 2090-9071 |
| language | English |
| publishDate | 2017-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Journal of Chemistry |
| spelling | doaj-art-baafbb9e5dcf4e77afcb2d59c4eac8bf2025-02-03T06:08:22ZengWileyJournal of Chemistry2090-90632090-90712017-01-01201710.1155/2017/40808474080847Study of Carbonaceous and Nitrogenous Pollutant Removal Efficiencies in a Hybrid Membrane BioreactorVictor S. Ruys0Kamel Zerari1Isabelle Seyssiecq2Nicolas Roche3Aix-Marseille University, CNRS, Centrale Marseille, M2P2 UMR 7340, 13541 Marseille Cedex 13, FranceAix-Marseille University, CNRS, Centrale Marseille, M2P2 UMR 7340, 13541 Marseille Cedex 13, FranceAix-Marseille University, CNRS, Centrale Marseille, M2P2 UMR 7340, 13541 Marseille Cedex 13, FranceAix-Marseille University, CNRS, Centrale Marseille, M2P2 UMR 7340, 13541 Marseille Cedex 13, FranceA hybrid membrane bioreactor (HMBR) comprises activated sludge (free biomass), a biofilm (supported biomass), and a membrane separation. A laboratory pilot-scale HMBR was operated for seven months with high organic loads of both carbonic and nitrogen pollutants. Several experiments were conducted to investigate the influence of the height of the packing bed (27 cm, 50 cm, and 0 cm) and the effect of the concentration of dissolved oxygen (DO) on the organic removal rate, total nitrogen removal rate (TN), and ammonium removal. The organic removal rate was always >95% and mostly >98%. The NH4+-N and TN removal rates were directly related to DO. NH4+-N removal rate reached 100% and was mostly >99% with a concentration of DO > 0.1 mg/L, whereas the NO3--N removal rate was differentially affected depending on the level of DO. The removal rate increased when the concentration of DO was optimal for simultaneous nitrification and denitrification, which was between 0.1 and 0.5 mg/l, and the TN removal rate was consequently high. The removal rate decreased when DO was high and denitrification was consequently low thereby reducing the TN removal rate. This implies that high levels of DO (>1 mg/L) limit the denitrification process and low levels of DO (<0.1 mg/L) limit the nitrification process and hence total nitrogen removal in the bioreactor.http://dx.doi.org/10.1155/2017/4080847 |
| spellingShingle | Victor S. Ruys Kamel Zerari Isabelle Seyssiecq Nicolas Roche Study of Carbonaceous and Nitrogenous Pollutant Removal Efficiencies in a Hybrid Membrane Bioreactor Journal of Chemistry |
| title | Study of Carbonaceous and Nitrogenous Pollutant Removal Efficiencies in a Hybrid Membrane Bioreactor |
| title_full | Study of Carbonaceous and Nitrogenous Pollutant Removal Efficiencies in a Hybrid Membrane Bioreactor |
| title_fullStr | Study of Carbonaceous and Nitrogenous Pollutant Removal Efficiencies in a Hybrid Membrane Bioreactor |
| title_full_unstemmed | Study of Carbonaceous and Nitrogenous Pollutant Removal Efficiencies in a Hybrid Membrane Bioreactor |
| title_short | Study of Carbonaceous and Nitrogenous Pollutant Removal Efficiencies in a Hybrid Membrane Bioreactor |
| title_sort | study of carbonaceous and nitrogenous pollutant removal efficiencies in a hybrid membrane bioreactor |
| url | http://dx.doi.org/10.1155/2017/4080847 |
| work_keys_str_mv | AT victorsruys studyofcarbonaceousandnitrogenouspollutantremovalefficienciesinahybridmembranebioreactor AT kamelzerari studyofcarbonaceousandnitrogenouspollutantremovalefficienciesinahybridmembranebioreactor AT isabelleseyssiecq studyofcarbonaceousandnitrogenouspollutantremovalefficienciesinahybridmembranebioreactor AT nicolasroche studyofcarbonaceousandnitrogenouspollutantremovalefficienciesinahybridmembranebioreactor |