ADVANCED SEWAGE AND WASTEWATER TREATMENT PROCESS AND DEVICES FOR EACH UNIT PROCESSES

An apparatus for advanced treatment of sewage and wastewater is provided to treat sewage and wastewater into sewage and wastewater with better quality than effluent discharged from existing sewage and wastewater treatment facilities by performing respective unit processes in an anaerobic selection tank, a front aerobic tank and a sludge return tank for the front aerobic tank and separately disposing the unit processes in accordance with objectives, and a method for advanced treatment of sewage and wastewater using the same is provided. An apparatus for advanced treatment of sewage and wastewater by combination of unit processes comprises: a pretreatment equipment for removing adulterations, non-corrosive inorganic materials, and oils and fats contained in suspended solids from sewage and wastewater(1) by coarse and dense sieved screens(2,4) and a grit chamber(3); an anaerobic selection tank(5) independently operated to generate volatile fatty acid, accelerate emission of phosphorous using microorganisms contained in return sludge(23) returned from the main reaction SBR and nutrients contained in wastewater, inhibit generation of aerobic fiber bacteria and cultivate microorganisms with good cohesion; a front aerobic tank(6) used as a pure aerobic tank for removing a considerable amount of organic matter contained in sewage and wastewater through aerobic oxidation; a sludge return tank(7) for the front aerobic tank installed at a post process of the front aerobic tank to return active sludge(20) to the front aerobic tank to control MLSS(mixed liquor suspended solid) concentration; and a main reaction SBR(sequential batch reactor)(9) for removal of residual organic matter and advanced treatment of nitrogen and phosphorous.