Cyclone grit chamber is controlled by a mechanical force flow pattern and velocity, acceleration sedimentation of sand and grit means of organic matter with the water away. There are many types cyclone grit chamber, some forms also belong to the patented product. Grit chamber from the inlet, the outlet, sand area, sand bucket, turbine-driven devices and sediment system components. When also a baffle, so water and sand into the grit chamber; sewage flows from the inlet tangential direction grit area, water channels to set up a weir or water, so that may be deposited at the bottom of the channel sand down into the grit chamber Pop to the bottom and to strengthen the Coanda effect. In the middle of the grit chamber has a variable speed paddle, the water in the chamber to maintain circulation. Paddle, paddle and the water flow together, so that the turbine blades to rotate a spiral-shaped flow of sand, organic matter, and facilitate the separation of sand, suffered a centrifugal force due to the different relative density larger sand thrown to the wall, in sink into the sand bucket under the action of gravity; while the lighter organic matter, the part with the sand in the middle of the grit chamber separated organics with water outside the cyclone belt out of the pool. By adjusting the speed, grit can achieve the best results. Grit sand hopper can be used to enhance air, sediment and other ways to exclude sediment pump, and then through the sand-water separator to clean sediment standards. Cyclone grit chamber (Bell's and ratio's) has an area of ??the province, high grit removal efficiency, good operating environment, equipment operation and reliable, but the change of water more stringent scope of the fine grid higher operating results. The key equipment for foreign products, the price is high, so the pool-type spread in the country too early. Its ability to adapt to changes in traffic, a small head loss, the typical loss value is only 6mm, fine grit removal efficiency, 140 (0.104mm) purpose is also up to 73 percent sand, high kinetic energy efficiency.