Mthod and device for injection dissolution of gas for circulation water

Abstract

A jet method and apparatus for dissolving air in the circulated water is characterized by that the jetter in the path of circulated water, which has water pressurizing tube and water sucking tube, isused to dissolve air in the water by sucking and cutting actions, and a water pump is used to stir and mixthe water with air for dissolving air in water further. Its advantages are simple structure, high dissolving effect, and less energy consumption.

Description

technical field [0001] The invention relates to an air flotation and dissolved air method and a device, in particular to a circulating water ejection dissolved air flotation method and a device for realizing the method. Background technique [0002] Air flotation is a technique for solid-liquid or liquid-liquid separation. It generates a large number of microbubbles in a certain way, making them adhere to solid or liquid impurity particles with a density close to that of water, forming a floating body with a density lower than that of water, which floats up to the water surface under the action of buoyancy to form scum. Solid-liquid or liquid-liquid separation. [0003] As a unique water treatment technology, air flotation separation technology is very effective for separating oils, fibers, suspended solids, algae, activated sludge or biofilms whose specific gravity is similar to that of water. The particles removed by the air flotation method are mainly divided into two t...

AI Technical Summary

Problems solved by technology

When there is dissolved air filling in the system, it is inconvenient to control the relative position of the water level of the dissolved air tank and the air level, resulting in the effect of air flotation from time to time. Even if automatic control is adopted, such as automatic water level controller or pressure automatic controller, sometimes There will be misoperation, and the investment of dissolved air irrigation is also very large

In the system of reflux pump suction pipe suction-dissolved air, gas-liquid mixing pump and simply using ejector to dissolve air, although the dissolved air filling and power consumption are reduced, the gas-water ratio is too high due to the small amount of gas inhaled. Low, high dissolved air return water is required to achieve the ideal air flotation effect

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