PROCESS FOR REMOVING PHOSPHOROUS AND NITROGEN USING BIOLOGICAL METHOD AND PHYSICAL METHOD USING PHOSPHOROUS ADSORPTION CAPACITY OF LOESS MEDIA

摘要

PURPOSE: To provide a process for removing phosphorous and nitrogen from wastewater, which uses a biological method of an anaerobic tank, an aerobic tank, and a denitrification tank based on composition change of wastewater and a physical method of using phosphorous adsorption capacity of loess media. CONSTITUTION: In a process for treating wastewater comprising the steps of an anaerobic treating step of an anaerobic tank, a nitrification step of an aerobic tank, a denitrification step of an anoxic tank, and a phosphorous-adsorption step of a phosphorous adsorption tank, the process is changed in accordance with composition and treating amount of inflown wastewater, loess media for forming a biological membrane is used for the anaerobic treating step, nitrification step, and the denitrification step, and loess media for adsorbing phosphorous is used for the phosphorous-adsorption step.