METHOD OF RECYCLE WATER TREATMENT WITH FLUIDIZED BIOFILM MEDIA FOR WASTEWATER TREATMENT

A method for treatment of recycle water using a fluidized media in the wastewater treatment process is provided to secure high nitritation ratio stably, enable the fluidized media to be applied to recycle water containing suspended solids at a high concentration, and enable a recycle water-treating operation to be performed stably in a wide concentration range of dissolved oxygen. A method for treatment of recycle water using a fluidized media in the wastewater treatment process comprises: a first settling process of flowing wastewater into a first settling tank(10) to settle the wastewater; a microorganism treatment process of sequentially performing the steps of emitting phosphorous contained in raw water in an anaerobic tank(20), denitrifying nitrates in an anoxic tank(30), and oxidizing and nitrifying organic matters and accumulating phosphorous in an aerobic tank(40); a second settling process of settling the microorganism treated effluent in a second settling tank(50); a sludge return process of returning some of settled microorganisms to the anaerobic tank of the microorganism treatment process; a sludge treatment process of concentrating, digesting and dewatering sludge excluded in the sludge return process; and a recycle water treatment process of injecting a fluidized media, which is a waste tire-processed carrier or a sponge type polyurethane media, into recycle water of concentrated supernatant, digested supernatant and separated liquid, thereby accelerating nitritation of the recycle water to return the recycle water to the anoxic tank.