公开(公告)号：US11123670B2

公开(公告)日：2021-09-21

申请号：US16720428

申请日：2019-12-19

申请人： NANJING UNIVERSITY

发明人： RuiHua Li ,  SiWen Shen ,  LiSong Zhou ,  LiYu Luo ,  MengSha Guan ,  Wei Wang ,  ZhiBin Ge

IPC分类号： B01D39/20 ,  C02F3/28 ,  C02F3/30 ,  C02F3/34 ,  C02F101/10 ,  C02F101/16 ,  C02F103/06 ,  C02F3/00

摘要： The present invention discloses a method for preparing a simultaneous nitrogen and phosphorus removal lightweight material and the use thereof, and belongs to the technical field of environmental functional materials and sewage treatment. In the present invention, sulfur and an iron-based component are thoroughly melted and dispersed to obtain a molten mixture, where the iron-based component is a mixture of iron sulfides with carbonates of calcium and magnesium; and the above molten mixture is subjected to a foaming treatment to form the simultaneous nitrogen and phosphorus removal lightweight material. The simultaneous nitrogen and phosphorus removal lightweight material of the present invention has characteristics of high porosity, a large specific surface area, a light weight, and a high reaction activity. The resultant lightweight material, used as a microbial carrier and an electron donor for a biochemical reaction, is applied to a reactor such as a fixed bed or fluidized bed for sewage treatment, with the advantages of a good microbial attachment performance, a high denitrification rate and a good phosphorus removal effect.