Aerobic denitrification bacterium SLY2-21 applied to denitrifying sewage and application thereof

The invention discloses an aerobic denitrification bacterium SYL2-21 applied to denitrifying sewage and application thereof and belongs to the fields of environmental microorganisms and water treatment biological denitrification. The strain is preserved in China General Microbiological Culture Collection Center (CGMCC) in January 2019, the address is Institute of Microbiology Chinese Academy of Sciences No.3 No.1 yard Beichen west road Chaoyang District Beijing, and a preservation number is CGMCC No.17221. The strain disclosed by the invention is screened and obtained from landfill leachate; the strain disclosed by the invention can effectively remove ammoniacal nitrogen and nitric nitrogen in the sewage; after being enlarged and cultivated, the strain can be directly applied to denitrifying riverway water bodies; the strain has large application potential in actual engineering; from far-reaching significance, the strain has a certain promoting effect on environment protection work. 一株用于污水脱氮的好氧反硝化菌SLY2-21及其应用