Coal powder charcoal to choose optimal fine quality too west coal as raw material, through carbonization, activation and grinding powder refined processed, in black powder, can be made according to user requirements different adsorption and decolorization ability, different fineness grade activated carbon, powdered activated carbon adsorption speed, with flocculating effect and leaching effect, and the construction of the unit using less investment, low running cost, and pretreatment in water plant, sewage treatment plant.