Novel water treatment air floating tank

Abstract

The invention provides a novel water treatment air floating pool. The air floating tank comprises a tank body, wherein a first partition plate, a second partition plate and a third partition plate are sequentially arranged in the tank body; the first partition plate, the second partition plate and the third plate sequentially divide the tank into an impact contact chamber, an adhesion contact chamber, an air floating separation chamber and a diversion water outlet chamber; the impact contact chamber and the adhesion contact chamber are communicated at the tank bottom by a first channel, the air floating separation chamber and the diversion water outlet chamber are communicated at the tank bottom by a second channel, air dissolving releasers are uniformly arranged at the bottom parts of the impact contact chamber and the adhesion contact chamber, a pipe opening of a raw water inlet pipe is arranged at the upper part of the impact contact chamber, a hydraulic slag removal system is arranged above the impact contact chamber, and a mechanical slag removal system is arranged above the air floating separation chamber. With the novel water treatment air floating tank, the mutual action between micro air bubbles and suspended substances is remarkably improved to realize the effective adhesion of micro air bubbles and suspended substances, and the capacity of resisting water quality change and the water purification effect are improved.

Description

technical field [0001] The invention relates to a novel water treatment air flotation pool. Background technique [0002] At present, the pressurized dissolved air flotation process is divided into a downstream air flotation process and a counter-current air flotation process. The downstream air flotation process uses a downstream method in the air flotation contact chamber to make the raw water and dissolved air water flow in the same direction, and the microbubbles and suspended solids move in the same direction in the contact chamber and complete the collision and adhesion process. It flows upwards in the same direction as the suspended solids, and the contact time between the microbubbles and the suspended solids is short, resulting in poor adhesion of the microbubbles, especially in the case of a lot of oil or suspended particles in the raw water and loose flocs, the downstream air flotation process It is difficult to effectively remove oil and suspended particles in...

AI Technical Summary

Problems solved by technology

In the countercurrent process, the microbubbles and suspended solids can effectively collide, and the adhesion process does not require too much flow power. However, since the raw water flows downward and is in a turbulent state, the hydrodynamic force is large, and the microbubbles and suspended solids after the collision cannot Good adhesion to form stable foam flocs or desorption under the countercurrent of raw water after adhesion, resulting in the failure of the foam flocs to complete the floating separation process well, and the phenomenon of "running alum"

The countercurrent air flotation process is not very adaptable to changes in raw water quality and surface loads. As the operation progresses, the water purification effect becomes worse. It is often achieved by increasing the reflux ratio, increasing the concentration of microbubbles, or increasing the depth of the air flotation tank. Good water quality, but this practice is extremely energy-intensive and not economically efficient

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