Inversed umbrella type composite impeller surface aeration machine

Abstract

A surface aerating machine with reverse umbrella type compoiste blade wheel for filling O2 in water is composed of motor, drive shaft, blade wheel with radial blades and air sucking holes, and radial air-liquid mixing tubes with air inlet communicated to said air sucking hole.

Description

technical field [0001] The invention relates to an inverted umbrella type composite impeller surface aerator for sewage treatment. Background technique [0002] The inverted umbrella surface aerator is the key equipment used in the oxidation ditch of the urban sewage treatment project. All the impellers of the traditional inverted umbrella surface aerator are shaped like a paper umbrella opened upside down and installed in the oxidation ditch The surface of the water is driven by mechanical deceleration to rotate, relying on several blades on the impeller to scrape water and push the flow to wrap the air and dissolve the oxidized organic matter in the water to achieve the purpose of water purification. Because the blades can only push and rotate the water, the impact of the blades on the water causes bubbles to break up and the flow direction is disordered. When the dissolved oxygen on the surface reaches a certain value, it is difficult to increase it, resulting in poor aer...

AI Technical Summary

Problems solved by technology

Because the blades can only push and rotate the water, the impact of the blades on the water causes bubbles to break up and the flow direction is disordered. When the dissolved oxygen on the surface reaches a certain value, it is difficult to increase it, resulting in poor aeration effect and low power efficiency. Generally, it can only reach 1.6-2.4kgO 2 / kW h, the highest can only reach 2.5-2.6kgO 2 / kW h, so that the cost of energy consumption in the cost of urban sewage treatment in my country remains high

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