▎ 摘　　要

NOVELTY - Method for preparing water treatment agent, involves mixing graphene oxide aqueous solution, sodium hydroxide aqueous solution and graphene oxide aqueous solution, reacting, mixing acrylamide oligomer grafted graphite oxide mixed oxide thin film and acrylamide oligomer in dimethyl sulfoxide (DMSO), adding 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide (EDCI), mixing acrylamide oligomer grafted graphene oxide, polyacrylamide and polydimethylsilylpropylammonium chloride, cooling, and adding poly aluminum ferric silicate and sodium bicarbonate to the mixture. USE - The method is useful for preparing water treatment agent (claimed). ADVANTAGE - The method is cost-effective. DETAILED DESCRIPTION - Method for preparing water treatment agent, involves mixing graphene oxide aqueous solution, sodium hydroxide aqueous solution and graphene oxide aqueous solution in a ratio of 1 l:2 g:2 g, reacting the mixture for 4 hours, separating the mixture to obtain carboxylated graphene oxide, mixing acrylamide oligomer grafted graphite oxide mixed oxide thin film and acrylamide oligomer in dimethyl sulfoxide (DMSO), adding 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide (EDCI), where the ratio of the DMSO, graphite oxide, acrylamide oligomer and EDCI is 1 l:8 g:90 g:50 g, obtaining acrylamide oligomer grafted graphene oxide, mixing acrylamide oligomer grafted graphene oxide, polyacrylamide and polydimethylsilylpropylammonium chloride, naturally cooling the mixture to 45 degrees C, and adding poly aluminum ferric silicate and sodium bicarbonate to the mixture, where the water treatment agent comprises 8 pts. wt. acrylamide oligo grafted graphene oxide, 35 pts. wt. polyacrylamide, 35 pts. wt. polyaluminum silicate, 20 pts. wt. polydimethylpropargyl ammonium chloride and 5 pts. wt. sodium bicarbonate.