SYSTEM ON REMOVAL OF POLLUTANTS IN URBAN RUNOFF USING UPFLOW FILTRATION REACTOR

摘要

A system for the removal of contaminants in rainwater using an upflow filtration tank is provided to remove reliably fine particles with a particle size of 100 mum or less by using the upflow filtration tank and a porous buoyant filtering material, and maximally remove particulate contaminants contained in the rainwater by treating a large quantity of initial rainwater and preventing easy clogging of a filtering part due to the accumulation of contaminants. A system for the removal of contaminants in rainwater using an upflow filtration tank comprises: a storage tank(4) installed on an end portion of a rain inflow pipe(2) to store rainwater at all times; an upflow filtration tank(6) in which a porous buoyant filtering material is filled, and which filters contaminants by guiding rainwater comprising contaminant particles flown over the storage tank, thereby forming an upflow in the rainwater; a first baffle(22) which is vertically installed in a state that the first baffle is spaced apart from the bottom of a front part of the storage tank as much as a predetermined height to reduce a turbulent phenomenon generated by influent flown in from the rain inflow pipe; a second baffle(24) which is vertically installed at a predetermined height from the bottom of the storage tank and spaced apart from the first baffle to prevent influent that has passed through a part under the first baffle from excessively flowing into the upflow filtration tank; a discharge top plate(8) which is installed on a top part of the upflow filtration tank, and which guides filtered water passing through the upflow filtration tank and overflown water flowing over the storage tank to the treated water discharge side; and a treated water tank(12) installed in rear of the upflow filtration tank to store the filtered water before filtered water flowing along the discharge top plate is discharged to a discharge pipe.