A full-scale UASB reactor for treatment of pig and cattle slaughterhouse wastewater with a high oil and grease content
This paper discusses the performance of an 800m³ full-scale UASB reactor in treating meat-packing plant and slaughterhouse effluents containing high concentrations of oil and grease (O&G) (413-645 mg/L), resulting in a COD/O&G ratio of 26-32%. Those macromolecules were considered responsible for the unbalance of the system resulting in a total washout of the biomass. The removal of O&G from the influent using a physicochemical system (coagulation-flocculation) improved the physical characteristics of the anaerobic sludge, controlling the biomass washout. Reactor performance was significantly improved when the COD/O&G ratio influent was maintained in the 10%. The COD and O&G removal rates obtained after implantation of the physicochemical system were 70-92% and 27-58%, respectively. The specific methanogenic activity (SMA) of the biomass shows towards a tendency stabilisation and adaptation to the substrate influent. Pretreatment of the influent allowed the maximum organic load to be increased (1.46 to 2.43 Kg COD/m³.d) and improved the quality of the effluent.
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Brazilian Society of Chemical Engineering
2005
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oai:scielo:S0104-663220050004000132006-01-02A full-scale UASB reactor for treatment of pig and cattle slaughterhouse wastewater with a high oil and grease contentMiranda,L. A. S.Henriques,J. A. P.Monteggia,L. O. Anaerobic digestion Oil and grease Specific methanogenic activity UASB reactor This paper discusses the performance of an 800m³ full-scale UASB reactor in treating meat-packing plant and slaughterhouse effluents containing high concentrations of oil and grease (O&G) (413-645 mg/L), resulting in a COD/O&G ratio of 26-32%. Those macromolecules were considered responsible for the unbalance of the system resulting in a total washout of the biomass. The removal of O&G from the influent using a physicochemical system (coagulation-flocculation) improved the physical characteristics of the anaerobic sludge, controlling the biomass washout. Reactor performance was significantly improved when the COD/O&G ratio influent was maintained in the 10%. The COD and O&G removal rates obtained after implantation of the physicochemical system were 70-92% and 27-58%, respectively. The specific methanogenic activity (SMA) of the biomass shows towards a tendency stabilisation and adaptation to the substrate influent. Pretreatment of the influent allowed the maximum organic load to be increased (1.46 to 2.43 Kg COD/m³.d) and improved the quality of the effluent.info:eu-repo/semantics/openAccessBrazilian Society of Chemical EngineeringBrazilian Journal of Chemical Engineering v.22 n.4 20052005-12-01info:eu-repo/semantics/articletext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-66322005000400013en10.1590/S0104-66322005000400013 |
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Miranda,L. A. S. Henriques,J. A. P. Monteggia,L. O. |
| spellingShingle |
Miranda,L. A. S. Henriques,J. A. P. Monteggia,L. O. A full-scale UASB reactor for treatment of pig and cattle slaughterhouse wastewater with a high oil and grease content |
| author_facet |
Miranda,L. A. S. Henriques,J. A. P. Monteggia,L. O. |
| author_sort |
Miranda,L. A. S. |
| title |
A full-scale UASB reactor for treatment of pig and cattle slaughterhouse wastewater with a high oil and grease content |
| title_short |
A full-scale UASB reactor for treatment of pig and cattle slaughterhouse wastewater with a high oil and grease content |
| title_full |
A full-scale UASB reactor for treatment of pig and cattle slaughterhouse wastewater with a high oil and grease content |
| title_fullStr |
A full-scale UASB reactor for treatment of pig and cattle slaughterhouse wastewater with a high oil and grease content |
| title_full_unstemmed |
A full-scale UASB reactor for treatment of pig and cattle slaughterhouse wastewater with a high oil and grease content |
| title_sort |
full-scale uasb reactor for treatment of pig and cattle slaughterhouse wastewater with a high oil and grease content |
| description |
This paper discusses the performance of an 800m³ full-scale UASB reactor in treating meat-packing plant and slaughterhouse effluents containing high concentrations of oil and grease (O&G) (413-645 mg/L), resulting in a COD/O&G ratio of 26-32%. Those macromolecules were considered responsible for the unbalance of the system resulting in a total washout of the biomass. The removal of O&G from the influent using a physicochemical system (coagulation-flocculation) improved the physical characteristics of the anaerobic sludge, controlling the biomass washout. Reactor performance was significantly improved when the COD/O&G ratio influent was maintained in the 10%. The COD and O&G removal rates obtained after implantation of the physicochemical system were 70-92% and 27-58%, respectively. The specific methanogenic activity (SMA) of the biomass shows towards a tendency stabilisation and adaptation to the substrate influent. Pretreatment of the influent allowed the maximum organic load to be increased (1.46 to 2.43 Kg COD/m³.d) and improved the quality of the effluent. |
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Brazilian Society of Chemical Engineering |
| publishDate |
2005 |
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http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-66322005000400013 |
| work_keys_str_mv |
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