The classic product QD-014, black water flocculant is a water-soluble polymer compound (cationic polyacrylamide), non-toxic, non-corrosive, and has a lubricating feeling when attached to the skin. This product has good flocculation and has a variety of active groups. It can form hydrogen bonds with many substances by affinity and adsorption. The amount is small, the sedimentation is fast, and the effect is obvious. The effect of the flocculation sedimentation of coal gasified black water is very prominent.