LOW ENERGY CONSUMPTION TYPE WASTE WATER TREATMENT APPARATUS AND ITS OPERATION METHOD

摘要

The present invention relates to a low energy consumption type wastewater treatment apparatus including a microbial fuel cell for generating electricity using organic matters in wastewater in a wastewater treatment apparatus, and having a separation membrane bioreactor and a capacitive deionization device connected sequentially behind the microbial fuel cell for the advanced treatment of the wastewater. The low energy consumption type wastewater treatment apparatus comprises: a first sedimentation tank for receiving wastewater and solid-liquid-separating the wastewater into slurry, which is solid in the wastewater, and first treated water; a microbial fuel cell for receiving the first treated water discharged from the first sedimentation tank and generating electricity by decomposing organic matters in the first treated water without aeration; a separation membrane bioreactor for receiving second treated water discharged from the microbial fuel cell to remove organic matters remaining in the second treated water and remove floating solids stably without a separate sedimentation tank and conducting nitrification and denitrification; and a capacitive deionization device for receiving third treated water discharged from the separation membrane bioreactor and removing salinity in the third treated water.