Today, the air flotation machine manufacturer will explain the principle and application of cavitation air flotation technology, and hope to help everyone!
Air flotation is an efficient and fast solid-liquid separation technology. It uses highly dispersed micro-bubbles as a carrier to attach to the suspended matter in the wastewater, making it less dense than water and floating on the water surface to achieve the same liquid separation process. It can be used for solid ion separation, solid and liquid ion separation, liquid and liquid ion separation, and even solute separation. Generally speaking, the flotation process should meet the following basic requirements: (1) A sufficient number of fine bubbles must be provided to the water.
(2) The pollutants in the wastewater must be suspended;
(3) The air bubbles must stick to the suspended matter.
With these three basic conditions, the flotation process can be completed to achieve the purpose of removing pollutants in the water.
In sewage and wastewater treatment projects, air flotation has been widely used in the following aspects:
(1) Oil-water separation of oily wastewater in petroleum, chemical and machinery manufacturing industries;
(2) Recover useful substances in wastewater, such as pulp fibers and fillers in papermaking wastewater;
(3) Pretreatment of industrial wastewater containing suspended solids with a relative density close to 1;
(4) Replace two sedimentation tanks for slurry separation, which is especially suitable for the situation where activated sludge flocs are not easy to settle or expand easily.
(5) Thickening of excess sludge.
