曝气沉砂池就是在池的一侧通进空气的沉砂池。池内的污水在空气引导下成螺旋形向前流动(即旋流)。污水在这种周边到中心逐渐减少的旋流流速作用下,砂粒被带到池底的集砂槽中而被分离。污水中的有机物,包括从砂面上冲刷下来的污泥都处于悬浮状态,并随水流进入后面的处理构筑物。国外从五十年代开始研究和使用,当前应用已 The aerated grit chamber is a grit chamber that opens into the air on one side of the pool. The sewage in the pool spirals forward (ie, swirling) under air guidance. Sewage is driven by this swirling velocity, which is gradually reduced from the periphery to the center, and the sand particles are taken to the sand trap in the bottom of the pool and separated. The organic matter in the sewage, including the sludge washed off the sand surface, is in a suspended state and flows with the water into the subsequent treatment structure. Foreign research and use since the fifties, the current application has been