DEVELOPMENT AND UTILIZATION OF FLOATATION MACHINE SPECIALIZED IN DEOILING OF OIL PRODUCTION SEWAGE

Features of floatation specialized in oil production sewage are analyzed.And main causes about bubble sliming in Wemco floatation machine are discussed. The radial and tangential components,of liquid-flow velocity were analyzed respectively.The view that reducing linear velocity of impeller blade edges is put forword.On the basis of analysis and experience from researching floatation machine for mineral processing previously,a set of floatation machine for deoiling of oil production sewage is developed,which has four floatation cells with 4.1m 3 of effective volume each. The aeration capacity is able to reach 1.4 m 3/m 2. min with actual power consumption of 30 kW.The machine has some advantages,such as scattered well bubbles,even distribution of bubbles in cells,stable liquid surface,and more efficient deoiling.