Shallow-layer air-floating sewage filter

Abstract

The invention belongs to the field of sewage treatment equipment and in particular relates to a shallow-layer air-floating sewage filter. The shallow-layer air-floating sewage filter comprises a tankbody, a bracket and a water distribution mechanism, wherein a rotary wheel runway plate is arranged on the upper surface of a tank wall in the peripheral direction; the rotary wheel runway plate is matched and connected with a rotary frame; the rotary frame is provided with a rotary driving device; the rotary wheel on the rotary frame is controlled to do peripheral motion on the rotary wheel runway plate; a rotary barrel, a fixed barrel, a water level adjusting barrel and a sludge barrel are concentrically arranged in the middle of the tank body in sequence from outside to inside; clean-waterwater lifting pipes are uniformly welded with the outer side of the rotary barrel; a water distribution mechanism is located at the upper part of the sludge barrel; an air dissolving pipe and a refluxing pipe are mounted on the bracket. According to the shallow-layer air-floating sewage filter provided by the invention, a product purification tank is shallow and the staying time of sewage in an air floating tank is only 3 to 5 minutes and the surface has an enough dross storage space; the filter is especially suitable for treating high-concentration sewage. The shallow-layer air-floating sewage filter has a small volume and the air dissolving efficiency reaches 95 percent or more; the shallow-layer air-floating sewage filter also has the advantages of compact structure, small occupied areaof equipment and high efficiency.

Description

Technical field [0001] The invention belongs to the field of sewage treatment equipment, in particular to a shallow air flotation sewage filter. Background technique [0002] For tap water clarification, domestic wastewater and industrial wastewater treatment, air flotation technology is currently widely used, that is, the use of supersaturated dissolved gas water, which is mixed with the raw water to be treated under normal pressure, forms a large number of microbubbles, which are in the process of floating As a carrier, it contacts the suspended matter in the raw water, and it is brought to the surface of the water and then removed to purify and decontaminate the water. However, because the dissolved gas directly enters the pool from the bottom of the pool, it has a great interference to the pool water. To clarify, the effective water depth of the pool body of the existing sewage filter needs to be more than 2 meters, so there is a tall pool body, a lot of consumables, a large ...

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Problems solved by technology

[0002] For the treatment of tap water clarification, domestic wastewater and industrial sewage, air flotation technology is widely used at present, that is, supersaturated dissolved air water is used to mix with raw water to be treated under normal pressure to form a large number of microbubbles. As a carrier, it is in contact with the suspended matter in the raw water, and then it is brought to the water surface and then skimmed to purify and decontaminate the water quality. However, since the dissolved air water enters

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