Patent ID: 7175766
Filing Date: 2007-02-13
Classification: B01D,C02F,Y02W

Abstract:
1. An apparatus for performing a tertiary treatment of sewage using porous filtering media, comprising: a reaction tank into which effluent wastewater of a settling basin flows; porous filtering media in the shape of a ring with both ends going amiss having predetermined sizes of surface areas and openings and filled in the reaction tank, for removing suspended solids by precipitating suspended solid particles included in the effluent wastewater and removing organic matters and nutritive salts included in the suspended solid particles along with the precipitation removal of the suspended solid particles; and a two-step overflow weir installed in the upper surface of the efflux portion of the reaction tank, for discharging the water uniformly cleaned in the reaction tank, wherein the two-step overflow weir receives an upper flow of the effluent wastewater flowing in through one side of the two-step overflow weir and receiving a lower flow of the effluent wastewater flowing in through the bottom and the other side.