Microporous disc type aerator

Abstract

The invention discloses a microporous disc type aerator. The microporous disc type aerator comprises a supporting seat and an aeration disc, wherein an air cavity is formed in the aeration disc; a plurality of air holes are formed in the disc surface of the aeration disc; a membrane with micropores coats the disc surface of the aeration disc; a stand column is inserted in the middle of the disc surface of the aeration disc; a baffle plate is fixed at the upper end of the stand column; the area of the baffle plate is larger than that of the disc surface of the aeration disc, and the baffle plate is positioned right above the aeration disc; the membrane is an annular membrane; the inner side and the outer side of the annular membrane are separately fixed on the aeration disc; and the air holes inthe disc surface of the aeration disc are positioned underthe annular membrane. By the microporous disc type aerator, the circumstance that sludge precipitates on the membrane to block the micropores can be prevented effectively, during aeration, micro-bubbles can also be guided to relieve the circumstance of necking, the micro-bubble rising and divergence area is increased, and the oxygenation transfer efficiency is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of aerators, and in particular relates to a microporous disc aerator. Background technique [0002] The microporous disc aerator is the latest aeration device developed in the 1980s. The device has small aeration bubble diameter, small gas-liquid interface diameter, large gas-liquid interface area, uniform bubble diffusion, and strong corrosion resistance. It is widely used in the sewage treatment process of petrochemical, printing and dyeing, textile, food, brewing, tanning, pharmaceutical, paper making, coking, steel mills, power plants and other industries. When the existing microporous disc aerators are used, the disc faces upward. When the aerator is not in use, the particles in the sewage will cover the disc surface after settling, causing the micropores to be blocked, and the microporous produced by the existing aerator Air bubbles are easily affected by water pressure (especially in deep water) dur...

AI Technical Summary

Problems solved by technology

When the existing microporous disc aerators are used, the disc faces upward. When the aerator is not in use, the particles in the sewage will cover the disc surface after settling, causing the micropores to be blocked, and the microporous produced by the existing aerator Air bubbles are easily affected by water pressure (especially in deep water) during the ascent process, resulting in radial compression (commonly known as necking), especially for large-diameter aerators, and this necking phenomenon is even more serious

As a result, the rising and diverging area of ​​the bubbles will be reduced. Second, the microbubbles will be compressed and collided during the rising process, causing the bubbles to aggregate and become large bubbles. These will affect the oxygen transfer efficiency of the aerator and reduce the effective contact of soda and water.

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