Introduce the concrete in the concrete reaction area, complete the rapid condensation response of small suspension, pharmaceutical agents, and raw water under the action of the mixer, and then enter the flocculation area for a slow flocculation reaction in the flocculation area. At the same time, add flocculant. Attract the effects of adsorption, charge adsorption, bridge, and network catching effectively combining algae, tiny suspension, colloids, bacteria, and other insoluble pollutants in the water body to form a large amount of high-density homogeneous rock flowers. This high-density Bijin can capture and condense pollutants with slightly tiny particle size, making the sludge's settlement in the sedimentation area faster, the water purification effect is better, and the water is clear and transparent. The cycle of concentrated sludge not only ensures the solid concentration of the flocculation reaction tank, improves the flocculation capacity of the mud water, and makes the forming floccope more uniform and dense. The setting of the oblique plate (tube) and the backflow of sludge strengthen the process of mud water separation. The area that can be used for mud water separation in the sedimentation tank of the sediment is several times that of the ordinary sedimentation tank.