Preparation of hydroxy-aluminum trichloride and modified polyacrylic amide was discussed.Together with a natural material, high-efficiency water treatment coagulant was made.

• 研究了羟基氯化铝和改性聚丙烯酰胺的制法,然后与一种天然物质复配,制成了一种复合水处理混凝剂。