Sewage treatment device based on nanobubbles

Abstract

The invention discloses a sewage treatment device based on nanobubbles. The sewage treatment device comprises a hard inner air pipe, one end of the hard inner air pipe is connected with an air source, and the other end of the hard inner air pipe is closed; an elastic micro-nano aeration pipe sleeves the outer side of the hard inner air pipe, and two ends of the elastic micro-nano aeration pipe are hermetically connected with the outer side of the hard inner air pipe; a plurality of first air holes are formed in the side wall of the hard inner air pipe in the corresponding elastic micro-nano aeration pipe; the outer side of the hard inner air pipe is sleeved with a hard retaining pipe, the two ends of the hard retaining pipe are fixedly connected with the outer side of the hard inner air pipe, the elastic micro-nano aeration pipe is located in the hard retaining pipe, and a gap is formed between the elastic micro-nano pipe and the hard retaining pipe; the hard retaining pipe is provided with a plurality of ventilation channels; the outer side of the hard retaining pipe is covered with a filter layer; the hard retaining pipe for limiting the expansion degree of the micro-nano aeration pipe is arranged on the outer side of the micro-nano aeration pipe so that the expansion uniformity of each part of the micro-nano aeration pipe is improved, and the aeration effect is improved; in addition, the uniformity of air supply is improved, and blockage is reduced.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment equipment, and in particular relates to a sewage treatment device based on nano-bubbles. Background technique [0002] It is a common method to provide dissolved oxygen in water by using a blower or an air compressor to transport air into the water through the aeration pipe, and then diffuse and escape in the form of bubbles, and dissolve oxygen into the water at the air-liquid interface. [0003] Existing aeration tubes are divided into perforated aeration tubes and micronano aeration tubes. The perforated aeration tube is to open small holes with diameters of millimeters or centimeters on both sides of the aeration tube. During aeration, the gas is ejected from the small holes on both sides to achieve the purpose of oxygenation and hydraulic disturbance; The larger the pore size, the larger the bubbles formed, which is not conducive to the mass transfer of oxygen in water. The micro-n...

AI Technical Summary

Problems solved by technology

In actual operation, too much pressurization of the micro-nano aeration tube will cause excessive expansion of the tube body, reducing the service life or even direct damage; too little pressurization will lead to poor aeration effect

And because the resistance pressure inside the pipeline is different, under the same pressure, the aeration effect of the micro-nano aeration tube is quite different.

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