Effect of organic load of refinery wastewater in municipal wastewater treatment using bench scale extended aeration activated sludge system
Petroleum refinery wastewater has the characteristics of a high concentration of aliphatic and aromatic petroleum hydrocarbons, which could lead to heavy pollution to the environment. In this study, petroleum refinery wastewater was co-treated with municipal wastewater in continuous flow bench scale...
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| Main Authors: | , , |
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| Format: | Book Section |
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WIT Press
2011
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| Online Access: | http://eprints.utp.edu.my/6484/1/Effect_of_organic_load_of_refinery_wastewater_in_municipal_wastewater_treatment_using_bench_scale_extended_aeration_activated_sludge_system.pdf http://eprints.utp.edu.my/6484/ |
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| Summary: | Petroleum refinery wastewater has the characteristics of a high concentration of aliphatic and aromatic petroleum hydrocarbons, which could lead to heavy pollution to the environment. In this study, petroleum refinery wastewater was co-treated with municipal wastewater in continuous flow bench scale reactors. Two bench scale reactors, A and B each of liquid volume of 18 L treats municipal wastewater and a mixture of municipal and refinery wastewater, respectively. The flow rate, Q for both reactors was maintained at 9 L/day with the hydraulic retention time (HRT) and sludge retention time (SRT), set at 2 days and 40 days, respectively. Food to microorganism (F/M) ratio, concentration of effluent soluble chemical oxygen demand (sCOD), mixed liqour suspended solids (MLSS), and mixed liquor volatile suspended solids (MLVSS) were monitored throughout the study period. The result of a full five months operation show high removal efficiencies of organic matter of about 90% as sCOD with 30% loading of the refinery wastewater. |
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