PORE CONTROLLABLE DUAL FILTERING APPARATUS BASED ON BUOYANCY AND PRESSURE CAPABLE OF EFFICIENTLY ELIMINATING NON-POINT POLLUTANTS BY PASSING INITIAL RAINWATER THROUGH A FLOATING MEDIUM AND AN ELASTIC MEDIUM

摘要

PURPOSE: A pore controllable dual filtering apparatus based on buoyancy and pressure is provided to filter remaining materials based on a self cleaning mode without power.;CONSTITUTION: A pore controllable dual filtering apparatus includes a rainwater treating bath(10), a first floating and filtering bath(20), a buoyage(40), an elastic filtering medium(50), and a porous compressing plate(60). A pair of porous plates(21) is separately installed between a filtering bath separating wall(13) and the inner wall(10a) of a rainwater treating bath. A floating medium(22) is filled between the porous plates. A filtering water chamber(31) is installed on the upper side of a fixed porous plate(30) and is in connection with a filtered water outlet(12). The fixed porous plate is fixed to the upper side of the first floating and filtering bath. The buoyage is movably installed in the filtered water chamber. The elastic filtering medium is arranged in a second compressing and filtering bath. The second compressing and filtering bath is formed at the lower side of the fixed porous plate.;COPYRIGHT KIPO 2012