Anisotropic flow shallow layer rotary sedimentation tank

Abstract

The invention discloses an inclined plate sedimentation tank with annularly and rotatably arranged inclined plates, and particularly relates to a high-integration-level integrated anisotropic flow shallow layer rotary sedimentation tank device in which water enters from the center of the upper part of the inclined plate, overflows from the periphery of the top of a water inlet area and discharges water, and the rotary inclined plate is inclined towards the central part from top to bottom. The tank comprises an upper water inlet area, an outer drainage groove, a middle settling area, a lower buffer area and a bottom sludge collecting area, and the vertical center lines of the five areas coincide; the outer side of the water inlet area is connected with a bottom plate of the drainage groove; the settling area is of an open hollow inverted quadrangular frustum pyramid structure, and an annular rotary inclined plate is arranged in the settling area; the buffer area is of a hollow cuboid structure with upper and lower openings; the sludge collecting area is of a space structure which is provided with an open rectangular upper end and an open circular lower end and is transited from a hollow inverted quadrangular frustum pyramid to a hollow inverted circular truncated cone. The sedimentation tank has the advantages of good suspended matter settling performance and concentrated settling paths.

Description

technical field [0001] The invention belongs to the field of water supply and drainage science and engineering, and provides a counterflow inclined plate sedimentation tank for sedimentation treatment of suspended matter in water, in particular to a counterflow shallow layer with shallow sedimentation function and high integration Rotary sedimentation tank device. Background technique [0002] Sedimentation tank is a primary treatment or advanced treatment structure commonly used in water purification process. It is mainly used to remove suspended solids with relatively high density from the water body by gravity. The shallow sedimentation theory holds that the shallower the pool depth of the sedimentation tank, the shorter the sedimentation time, the greater the surface load, the higher the sedimentation efficiency, and the smaller the particle size of the suspended solids that can be removed. According to this principle, installing inclined plates (or inclined tubes) in t...

AI Technical Summary

Problems solved by technology

The tank shape of the inclined plate sedimentation tank is usually rectangular. The bottom of the tank body is filled with water, and the upper tank body overflows with water. The rising water flow between the inclined plates affects the downward settlement of particles and the effective settlement of suspended solids, resulting in some Suspended solids flow out with the water flow, affecting the quality of the effluent

[0005] (2) The space utilization rate of the sedimentation tank is low

In the traditional sloping plate sedimentation tank, the sloping plates cover the entire surface of the sedimentation tank along an inclined direction, but due to the consistent arrangement direction, there is inevitably an idle space at both ends of the sloping plate near the vertical tank wall, so that the sedimentation tank is effective. Reduced settling space

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