Used OLTE air flotation machine flotation method use, usually as a supplement to oily waste water after oil. For preprocessing before secondary biological treatment, grease oil-water emulsion containing 50~150mg, after flotation, oil content can be reduced to 30, then the secondary flotation process, water containing up to 10 below. Main purpose: as a pretreatment of secondary biological treatment to ensure the relative stability of biological treatment of water, or in the secondary for secondary biological treatment biological treatment after treatment to ensure the water quality meets the requirements of relevant standards.
In addition to outside in the emulsified State oil removal from sewage, air flotation is also widely removed density close to water in the fine State of suspended particles of impurities. For example, floatation of activated sludge method can be effectively used for enrichment; removal of suspended impurities in sewage.