Inclined tube sedimentation tank Product introduction Inclined tube sedimentation tank refers to the sedimentation tank with inclined tube in the sedimentation area. There are two types of assembly: inclined pipe and branch pipe. In the sedimentation area of horizontal or vertical flow sedimentation tank, inclined parallel pipes or parallel pipes (sometimes honeycomb packing) are used to divide into a series of shallow sedimentation layers. The treated and settled sedimentation mud move and separate in each shallow sedimentation layer. According to the direction of their mutual movement, they can be divided into three different separation modes: reverse (opposite) flow, same direction flow and direction finding flow. Each two parallel inclined plates (or in parallel pipes) is equivalent to a very shallow sedimentation tank. Advantages: 1 the principle of lamenar flow is used to improve the treatment capacity of sedimentation tank; Secondly, the settling distance of particles is shortened, so the settling time is shortened; 2 the sedimentation area of the sedimentation tank is increased, so the treatment efficiency is improved. The over flow rate of this type of sedimentation tank can reach 36m3 / (m2. H), which is 7-10 times higher than that of the general sedimentation tank. It is a new type of high-efficiency sedimentation equipment. And has been finalized for production practice. Advantages: high removal rate, short residence time and small floor area. According to the theory of shallow tank, the length of inclined tube sedimentation tank is l, the horizontal velocity in the tank is V, and the settling velocity of particles is U0. Under ideal condition, L / h = V / U0. It can be seen that when the values of L and V are constant, the shallower the pool body is, the smaller the suspended particles can be removed. If a horizontal baffle is used, h is divided into three layers, each layer is H / 3 deep. Under the condition of constant U0 and V, only L / 3 is needed to remove the particles of U0. That is to say, the total volume can be reduced to 1 / 3 of the original. If the length of the tank is constant, because the depth of the tank is H / 3, the horizontal velocity can be increased by 3V, and the particles with settling velocity of U0 can still be removed, that is to say, the treatment capacity can be increased by three times. At the same time, dividing the sedimentation tank into N layers can increase the treatment capacity by N times. This is the shallow pool theory put forward by Hazen in the early 20th century.
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