日本田中和美运用理想沉淀池的基本假定,对水流通过斜板、斜管所能全部截留去除的水中最小颗粒粒径(称为临界分离粒径)的沉速u_0(称为截留速度)进行了理论分析(水处理技术,1968年5月)。现以我国实践中较为普遍采用的上向流斜管沉淀为例(如图1),研究水中悬浮杂质颗粒在正方形斜管中符合理想沉淀条件(假设:1.斜管 Japan’s Tanaka and U.S. used the basic hypothesis of an ideal sedimentation tank to perform a settling rate, u_0 (known as the interception rate), for the minimum particle size of the water (called the critical separation particle size) that can be removed from the water by sloping plates and inclined tubes. Theoretical analysis (water treatment technology, May 1968). Now take the example of upward flow inclined pipe sedimentation that is commonly used in our country’s practice (see Figure 1). Study the suspended impurities in the water in the square inclined pipe to meet the ideal precipitation conditions (hypothesis: 1. Inclined pipe