Multifunctional novel composite efficient phosphorus removal filler and preparation method thereof

The invention discloses a multifunctional novel composite efficient phosphorus removal filler which comprises the following components in parts by weight: 30-50 parts of Portland slag cement, 40-60 parts of PAC residues, 7-9 parts of bentonite and 1-2 parts of a slow-release carbon source, and a solid raw material and water with a weight ratio of 1: (0.4-0.7). Meanwhile, the invention discloses apreparation method of the phosphorus removal filler. According to the phosphorus removal filler disclosed by the invention, Portland slag cement is used as an adhesive, Portland slag cement and bentonite are used as reinforcers for removing phosphorus from PAC residues, and the phosphorus removal filler has the effect of synchronously and slowly releasing a carbon source while efficiently removingphosphorus. The multifunctional novel composite efficient phosphorus removal filler prepared by the invention has relatively strong phosphorus adsorption capacity, relatively good removal rate and relatively high adsorption c