alumium polysulfate is a composite polymer with a large molecular structure and strong adsorption capacity. Its water purification effect is better than all traditional inorganic water purifiers. After being added to raw water, the flocs formed are large, the precipitation speed is fast, the activity is high, and the filterability is good. It is also highly adaptable to various raw waters and has little effect on the pH value of water (pH value 4-11). Regardless of the turbidity of the raw water and the concentration of wastewater pollutants, its purification effect is significant. Small dosage: less corrosive to equipment and pipelines, easy operation, small dosage, and low purification cost.