公开(公告)号：US20230227341A1

公开(公告)日：2023-07-20

申请号：US18190083

申请日：2023-03-25

申请人： Greentech Environment Co., Ltd.

发明人： Mu LIU ,  Mengyuan DUAN ,  Zehua LI ,  Kai SUN ,  Yingqiang SU ,  Xikun ZHU ,  Huiming HAN ,  Xiaofeng LIN ,  Jin LI

IPC分类号： C02F3/30 ,  C02F3/20

CPC分类号： C02F3/30 ,  C02F3/208 ,  C02F2101/16

摘要： A total nitrogen (TN) removal device for sewage and its operation method. The TN removal device includes a denitrification tank, a supplementary reaction zone filled with aerobic granular sludge and a sedimentation and separation zone. The supplementary reaction zone and the sedimentation and separation zone are arranged inside the denitrification tank, and communicated through a three-phase separator. The sedimentation and separation zone is located above the supplementary reaction zone. A top of the sedimentation and separation zone is greater than its bottom. A membrane aerated biofilm reactor (MABR) assembly is arranged in a space formed by outer walls of the sedimentation and separation zone and supplementary reaction zone and an inner chamber of the denitrification tank. A side wall of the denitrification tank is provided with a chemical oxygen demand (COD) detector and a nitrate nitrogen detector.