Automatic reaeration device for horizontal submerged constructed wetland, and constructed wetland thereof

Abstract

The invention discloses an automatic reaeration device for a horizontal submerged constructed wetland, and a constructed wetland thereof. The device comprises a perforated horizontal tube closed at one end, and the upper surface of the perforated horizontal tube is provided with has two rows of small holes in the axial direction; and the open end of the perforated horizontal tube is connected withan inverted U-shaped tube through a threaded telescopic tube, and the other port of the inverted U-shaped tube is connected with a water outlet tube through another threaded telescopic tube. The perforated horizontal tube is laid at the bottom of the filling layer of the horizontal submerged constructed wetland, the open end of the perforated horizontal tube goes out of the sidewall of a pool body, and then is connected with the above siphon tube through a bent tube, and the height of the inverted U-shaped portion of the siphon tube can be adjusted by the threaded telescopic tube. Once the water level of the wetland reaches a siphon water outlet height, sewage in the wetland is rapidly periodically discharged automatically, so the pores inside the wetland are filled with oxygen in air inthe manner of negative pressure emptying and atmospheric convection in order to achieve the purpose of automatic reearation. The device has the advantages of simple structure, easiness in operation, high automation degree, and flexibility in water level adjustment, and can be widely used for sewage treatment of the horizontal submerged constructed wetland.

Description

technical field [0001] The invention belongs to the field of water treatment, in particular to an automatic reoxygenation device for a horizontal submerged flow artificial wetland and the artificial wetland thereof. Background technique [0002] The horizontal subsurface flow artificial wetland is composed of pool body, filler, plants and microorganisms, and is a water treatment technology that purifies sewage through the synergistic effect of physics, chemistry and biology. Compared with the surface flow constructed wetland, the sewage of the horizontal subsurface flow constructed wetland flows inside the wetland bed, which has the advantages of high load rate, small footprint, reliable treatment effect and impact load resistance, so it has been widely used in engineering . [0003] However, with the expansion of the application scale of subsurface flow constructed wetlands, some problems have also been exposed in the operation process. Among them, dissolved oxygen is the...

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Problems solved by technology

[0006] However, at this stage, most of the tidal operation is realized by manually adjusting the opening and closing of valves, and in terms of water level adjustment in subsurface flow constructed wetlands, the only way to achieve high, medium, and low water levels inside the wetland is by setting control valves at different water levels. , water level adjustment is not flexible, more manual operations, higher cost

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