Measures to improve the air flotation effect The smaller the bubble diameter and the more the number, the better the air flotation effect; the inorganic salts in the water will accelerate the bursting and merging of the bubbles, reducing the air flotation effect; adding coagulant PAC or PAM will promote Suspended solids condense to make them stick to the air bubbles and float up; flotation agents can be added to convert the surface of the hydrophilic particles into hydrophobic substances and stick to the air bubbles, and float up with the air bubbles to form scum, which is scraped by the scum scraper to the dirt Mud pool; the clear water in the lower layer is discharged through the water collecting pipe. Part of the treated clean water is returned to be used by the dissolved air system, and the other part is discharged.
The air flotation process is a fast method of separating solid particles from water and wastewater. Its working principle is that part of the treated waste water circulates into the air dissolving tank, under the state of pressurized air, the air is supersaturated and dissolved, and then mixed with the raw water added with flocculant at the entrance of the air flotation tank, due to the pressure reduction, the supersaturated The air is released, forming tiny bubbles, which quickly attach to the suspended matter and lift it to the surface of the air flotation pool. This creates a sludge slick which is easily removed, and heavier solids settle to the bottom of the tank and are also removed.
