In the complex treatment system for industrial wastewater, the horizontal air flotation machine, with its unique physical separation logic, has become the core process unit for solving the problem of suspended solid removal. Dissolved air flotation combines micron-level bubbles with pollutants to build a conversion from liquid mixing to solid state, providing an efficient solution for wastewater pretreatment in the petroleum, chemical, food and other industries.
Its technical core lies in the fine regulation of the gas-liquid-solid three-phase interface. The dissolved air tank produces dissolved air water, which is released into the water to be treated through a release device under reduced pressure. The air dissolved in the water is released from the water to form 20-40um microbubbles, which are combined with suspended matter in the sewage, making the specific gravity of the suspended matter less than the weight of water, and gradually float to the water surface to form scum. There is a scraper system on the water surface to scrape the scum into the sludge pool. The scraping system pushes the scum to the collection tank at a constant rate, and the treated water enters the clear water tank from the bottom through the overflow tank.
Compared with the traditional sedimentation process, the advantage of the horizontal air flotation machine lies in its dynamic separation mechanism. The surface area advantage of microbubbles improves the pollutant capture efficiency. The engineering value of this equipment is not only reflected in the treatment efficiency, but also in its compact structure and low-carbon properties. The modular design integrates functional units such as dissolved air, release, separation, and scraping into a horizontal box, which is suitable for plant renovation projects with limited land.
In scenarios such as decolorization of printing and dyeing wastewater, degreasing of food processing wastewater, and demulsification of mechanical processing emulsions, the horizontal flotation machine shows a wide range of process adaptability. This dual attribute of pollutant reduction and resource recovery makes this equipment an important device in the green water treatment technology system, and continues to promote the transformation of industrial wastewater treatment towards a low-carbon cycle.