SEWAGE AND WASTEWATER TREATMENT APPARATUS FOR REMOVAL OF NITROGEN AND PHOSPHORUS

摘要

PURPOSE: A sewage and wastewater treating apparatus for eliminating nitrogen and phosphorus is provided to improve the amount of microorganisms and to shorten residence time in a reactor by maximizing the using efficiency of organic carbon sources in raw water. CONSTITUTION: A sewage and wastewater treating apparatus(100) includes an anaerobic bath(110), a first anoxic bath(120a), a second anoxic bath(120b), a first transferring pipe, an aerobic bath(130), a separating membrane bath(140), a water taking unit, a degassing bath(150), and a second transferring pipe. Biological phosphorus releasing reaction is implemented in the anaerobic bath. Biological denitrification and dephosphorization are implemented in the first anoxic bath. The biological denitrification of nitrate nitrogen is implemented in the second anoxic bath. Biological nitrification and excessive phosphorus taking reaction are implemented in the aerobic bath. Treated water and sludge are separated in the separating membrane bath. The biological eliminating reaction of dissolved oxygen and nitrate nitrogen is implemented in the degassing bath.