Cyclone Sand Settler

Cyclone Sand Settlers are generally used in front of the primary sedimentation tank and behind the screen of urban domestic sewage treatment plants to separate larger inorganic particles in sewage. As a key pretreatment equipment in the process chain of urban sewage treatment, it has built an important defense line for intercepting inorganic particles in the front section of the primary sedimentation tank with its efficient solid-liquid separation ability and compact structural design. Through the precise coordination of centrifugal force and fluid dynamics, the equipment can effectively separate inorganic impurities such as sand particles and metal debris with a particle size greater than 0.5mm in sewage, creating stable operating conditions for subsequent biochemical treatment units.

From the perspective of structural design, the core of the cyclone grit setter consists of a steel tank body, an air lift device, a drive system and an intelligent control module. When sand-containing sewage enters the cylindrical tank body from the tangential water inlet, a high-speed cyclone field is formed through the guide plate. The sand particles with higher density are thrown to the tank wall under the action of centrifugal acceleration, and settle to the sand collecting hopper along the conical tank bottom, while the organic suspended matter enters the subsequent treatment unit with the central upflow. The sand particles accumulated in the sand hopper are lifted by air or sand pumps and enter the sand-water separator for thorough separation. The separated sand is discharged to the garbage bin (simplified) for transportation, and the sewage flows back to the screen well.

The highlights of technical innovation are reflected in the optimization of fluid dynamics and intelligent control. Moreover, with its stable operation rate and low energy consumption performance, it provides an innovative paradigm for improving the quality and efficiency of urban sewage treatment systems.