A study on treatment of phenol in wastewater with upflow sludge blanket filtration (USBF)
Abstract
Upflow Sludge Blanket Filtration (USBF) technology was used to remove phenol in wastewater with laboratory scale. Phenol is eliminated in concentrations ranging from 30 mg / L to 450 mg / L; hydraulic retention time 10 hours; Activated sludge content was maintained with MLSS values in the range of 2000-2300 mg / L. The results of the study showed that the USBF system has a good adaptation to phenol content changes in a short time. Phenol was treated at a high rate, up to 99.8% with phenol concentrations below 200 mg / L, but then showed signs of decreased treatment efficiency when the phenol concentration increased, at a phenol concentration of 450 mg / L the efficiency is only 22.06%. The removal of NH4-N reaches a maximum of 71.8%, then decreases with increasing phenol concentration; total phosphorus treatment efficiency is reduced with increasing phosphorus inflow. The USBF technology can be used to treat phenol in wastewater due to its advantages in operation and treatment capabilities.
