成都市羊子山水厂原有立式沉淀池四座,直径为12.1米,中部池深8米,周边池深5米,单池设计出水能力5,000立方米/日(如图1)。其设计数据:正常工作时上升流速V_上=0.57毫米/秒,一池清洗时V_上=0.75毫米/秒,停留时间T=2.47小时,总面积F=115平方米,中 The Yangzishan Water Plant in Chengdu has four original vertical sedimentation tanks, with a diameter of 12.1 meters, a central pool depth of 8 meters, and a surrounding pool depth of 5 meters. The single tank design has a water capacity of 5,000 cubic meters per day (see Figure 1). The design data: during normal operation, the rising flow rate V_ is equal to=0.57 mm/sec, the V_max=0.75 mm/sec, the retention time T=2.47 hours, and the total area is F=115 square meters.