▎ 摘　　要

NOVELTY - A flocculation additive comprises 72-90 pts. wt. gum Arabic graphene microcapsule and 10-28 pts. wt. dispersant. The graphene microcapsule comprises core material, and a wall material covering the core material, where the mass ratio of wall material and core is 0.5:1. The core material is graphene and wall material is Arabic gum. USE - The Flocculation additive is useful in sewage treatment. ADVANTAGE - The Flocculation additive improves flocculation efficiency, increase purification rate, and maintains or decreases dosage of flocculant. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) a method of preparing gum Arabic graphene microcapsule involving (a) dispersing graphene in pure water by ultrasonification process to obtain graphene dispersion, (b) adding wall material to graphene dispersion liquid at 30-45 degrees C under inert gas under pressure of 0.5-2 MPa, stirring speed at 800-1500 rpm for 30-60 minutes and (c) filtering, collecting solid product, freezing and drying; and (2) a method for preparing gum Arabic graphene flocculant comprising mixing gum Arabic graphene microcapsule with dispersant.