Apparatus and method for performing tertiary treatment of sewage based on porous filtering media
AssigneeKorea Institute of Construction Technology
InventorsYoung-Sug Kim, Moon-Hyoung Lee, Hong-Kyu Jang, Chung-Hee Chang, Chai-Sung Gee
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Abstract
Provided is an apparatus and method for performing tertiary treatment of sewage based on porous filtering media. The apparatus for performing tertiary treatment of sewage based on porous filtering media includes a reaction tank for receiving effluent wastewater from a primary settling tank; and porous filtering media, which is located in the reaction tank and has a predetermined size of surface area and opening, for settling suspension in the effluent wastewater and removing organic matter and nutritive salts included in the suspension.
Claims27
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.
A method for performing a tertiary treatment of sewage using porous filtering media, comprising the steps of:
- a) collecting the effluent wastewater from a settling basin, flowing the effluent wastewater through porous filtering media having predetermined sizes of surface areas and openings and filled in a fore reaction tank, and processing suspended solids and organic matters based on biological, physical and chemical reactions;
- b) taking in the rear reaction tank the effluent water cleaned in the fore reaction tank, flowing the cleaned water through the porous filtering media having predetermined sizes of surface areas and openings and filled in the rear reaction tank, and removing suspended solids and organic matters based on biological, physical and chemical reactions;
- and
- c) retaining the water discharged from the rear reaction tank in the discharging tank and discharging the water through a two-step overflow weir.
Dependencies are inferred from the claim text.