Removal of nutrients and heavy metals from anaerobic waste by aerobiological treatment |
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Authors: | Shaukat Farooq Paul F Gabriel |
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Institution: | University of Petroleum and Minerals, Dhahran, Saudi Arabia;University of Miami, Coral Gables, Florida 33124, USA |
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Abstract: | This study was conducted to investigate the effectiveness of aerobic biological treatment in removal of nitrogen, phosphorous, and heavy metals from a unique anaerobic liquid waste, produced at a solid waste-to-methane anaerobic digestion facility. Laboratory scale continuous flow activated sludge reactors were employed in this study. The liquid waste has moderate BOD/COD ratio with BOD concentration of 1300 mg/L and high concentration of essential nutrients, making the liquid waste biologically treatable. Results showed that aerobic biological treatment can remove nitrogen and phosphorous on the order of 85%. Metal removal efficiencies vary widely for 11 metals studied in this investigation. |
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