▎ 摘　　要

NOVELTY - A sodium alginate-hydrotalcite-graphene gel ball comprises sodium alginate gel sphere embedded with hydrotalcite and graphene. USE - Sodium alginate-hydrotalcite-graphene gel ball used for water body heavy metal removal (claimed). ADVANTAGE - The product has improved mechanical strength and toughness. It has higher removal rate removal rate. The method is simple, convenient and has strong practicability. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for: (1) preparation of sodium alginate-hydrotalcite-graphene gel ball comprising dispersing oxidized graphene aqueous solution, sodium alginate and hydrotalcite, mixing, adding calcium chloride solution, and solidifying; and (2) heavy metal lead ion water body removal method comprising taking sodium alginate-hydrotalcite-graphene gel ball, adding heavy metal lead ion containing water, oscillating, and absorbing.