公开(公告)号：US20240166542A1

公开(公告)日：2024-05-23

申请号：US17783309

申请日：2021-10-29

Applicant: Beijing University of Technology

Inventor： Yongzhen PENG ,  Wanyi FENG ,  Jialin LI ,  Shenhua YANG ,  Shuai LI

IPC: C02F3/30 ,  C02F3/00 ,  C02F3/20 ,  C02F101/10 ,  C02F101/16

CPC classification number: C02F3/307 ,  C02F3/006 ,  C02F3/20 ,  C02F3/303 ,  C02F2101/105 ,  C02F2101/166 ,  C02F2209/06 ,  C02F2209/22

Abstract: A method and device for in-situ enriching Anammox bacteria by conventional activated sludge, which belongs to a biological wastewater treatment technology. The device comprises a raw water tank, an anammox reactor and a water outlet tank. The method comprises the following steps: (1) taking traditional activated sludge from a municipal wastewater plant as inoculation sludge without special requirements on form of reactor and water quality of inflow; the mainstream anammox in-situ enrichment being realized mainly in three stages; (2) carbon and phosphorus removal stage, wherein carbon and phosphorus removal sludge is domesticated through joint control of aerobiotic time and sludge retention time; (3) partial nitrification stage, wherein the stage is realized through gradually extending the aerobiotic time; (4) anammox bacteria in-situ enrichment stage, wherein good culture retention conditions are provided through the artificial regulation strategies: (5) the method of the present invention only needs to construct or utilize the existing traditional activated sludge wastewater biological treatment devices and equipment without adding agents, which is conducive to the application of practical engineering.