ADVANCED WASTEWATER TREATMENT METHOD AND SYSTEM USING PHOSPHOROUS RELEASE REACTOR, RBDCOD RECOVERY AND CRYSTALLIZATION TECHNIQUE FOR SLUDGE REDUCTION

摘要

PURPOSE: A method and a system for processing wastewater is provided to reduce a cost for processing sludge, which is generated from the system, by decomposing and utilizing the sludge. CONSTITUTION: Phosphorus contained in sludge, which is transferred from a wastewater processing system to a phosphorous releasing reactor, is discharged as orthophosphoric acid. Ozone and alkaline are introduced into the sludge without the orthophosphoric acid and the sludge is utilized and reduced. The sludge is concentrated and is separated from an ozone contact bath. The concentrated sludge is decomposed as ammoniacal nitrogen and orthophosphoric acid. Remained solution is transferred to a crystallization bath to generate a crystallization material.