| Oily wastewater treatment using a novel hybrid PBR-UASB system. | |
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MedLine Citation:
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PMID: 17276486 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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In this study, anaerobic treatability of oily wastewater was investigated in a hybrid reactor system consisting of a packed bed reactor (PBR) followed by an upflow anaerobic sludge blanket (UASB) reactor at 35 degrees C. The system was operated using real pet food wastewater at different hydraulic retention times and loading rates for 165 d. The PBR was packed with sol-gel/alginate beads containing immobilized enzyme which hydrolyzed the oil and grease (O&G) into free long chain fatty acids, that were biodegraded by the UASB. The hybrid system was operated up to an oil loading rate of 4.9 kg O&Gm(-3)d(-1) (to the PBR) without any operational problems for a period of 100 d, with COD and O&G removal efficiencies above 90% and no sludge flotation was observed in the UASB. Beads supplement to the PBR was less than 2 g d(-1) and the relative activity was about 70%. Further increment in O&G loading to 18.7 kg O&Gm(-3)d(-1) caused destabilization of the system with 0.35% (v float/v feed) sludge float removed from the UASB. |
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Authors:
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Jeganaesan Jeganathan; George Nakhla; Amarjeet Bassi |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't Date: 2007-02-05 |
Journal Detail:
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Title: Chemosphere Volume: 67 ISSN: 0045-6535 ISO Abbreviation: Chemosphere Publication Date: 2007 Apr |
Date Detail:
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Created Date: 2007-02-28 Completed Date: 2007-06-14 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0320657 Medline TA: Chemosphere Country: England |
Other Details:
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Languages: eng Pagination: 1492-501 Citation Subset: IM |
Affiliation:
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Department of Chemical and Biochemical Engineering, University of Western Ontario, 1151 Richmond Street, Suite 2, London, Ont., Canada N6A 5B9. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Anaerobiosis Bioreactors* Enzymes, Immobilized / metabolism Lipase / metabolism Oils / chemistry* Sewage* Waste Disposal, Fluid / instrumentation* Water Purification / instrumentation, methods* |
| Chemical | |
Reg. No./Substance:
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0/Enzymes, Immobilized; 0/Oils; 0/Sewage; EC 3.1.1.3/Lipase |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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