Powder-activated carbon is a fine, powdery adsorbent made from raw materials such as wood chips, nut shells, and coal through high-temperature carbonization and activation processes. Its particle size typically ranges from 10 to 200 mesh. The extremely small particles endow it with a huge specific surface area and a rich microporous structure, enabling it to fully contact the treated substances in a very short time and rapidly adsorb organic pollutants, pigments, odors in water, as well as harmful gas molecules in the air. The product features a fast adsorption rate, high adsorption efficiency, and remarkable treatment effects. Moreover, it has a relatively low production cost and offers flexible usage, as the dosage can be adjusted according to different requirements. Powder-activated carbon is widely used in advanced purification of drinking water, emergency treatment in sewage treatment plants, decolorization and impurity removal in the food and beverage industry, refining and purification of pharmaceutical and chemical raw materials, as well as terminal purification of industrial waste gas. It is an ideal material for efficiently treating various fluid pollutants.