Abstract
A biological fluidized‐bed reactor (FBR) containing biomass attached to granular activated carbon (GAC) was investigated for the treatment of aqueous‐phase dichloromethane (DCM). The system was directly inoculated with fresh biomass solids collected from a General Electric Plastics wastewater treatment facility, located in Mount Vernon, Indiana. The biomass consumed DCM as its sole carbon and energy source following an acclimation period of approximately 8 days. Dichloromethane biodegradation rates in excess of 40 kg/m3 · d were achieved during continuous operation, with no detectable DCM (<1 mg/L) in the process effluent. Steady‐state data were collected to enable process scale‐up. This study confirmed that the biological GAC FBR is an environmentally acceptable waste treatment configuration for the destruction of aqueous‐phase DCM.
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