Modified iron tailing solid waste ceramsite as well as preparation method and application thereof

The invention belongs to the technical field of environmental engineering water treatment, and provides modified iron tailing solid waste ceramsite as well as a preparation method and application thereof, and the modified iron tailing solid waste ceramsite is prepared from the following raw materials in parts by mass: 60-80 parts of iron tailings, 19-39 parts of saw mud, 1-5 parts of a pore forming agent and 1-5 parts of a sodium silicate solution. The ceramsite provided by the invention has the volume density of 1.10 to 1.25 g/cm < 3 >, the strength of 5.8 to 7.1 MPa, the apparent porosity of 62 to 72 percent, the hydrochloric acid solubility of 0.8 to 1.3 percent and the ammonia nitrogen removal rate of 90.1 to 94.8 percent. The catalyst has the advantages of small volume density, large specific surface area, high strength and apparent porosity, low hydrochloric acid solubility, high ammonia nitrogen pertinence, high removal rate and the like. And after adsorption, recycling is convenient, the purpose of tr