Study Of Mechanism On The Viscosity Reduction Of Oilfield Polymer Sewage By The Radiation Of Microwave

With the wide application of polymer flooding and Alkaline-Polymer-Surfactant (ASP) flooding in the major oil fields, oil production is increasing, but the difficulty of the sewage treatment is also increaseing significantly. Due to the use of polymers, the viscosity of sewage is stubbornly high, which bring difficulties in sewage treatment. However the cost of traditional sewage treatment is high, area is large and separation rate is poor, it is very necessary to improve the sewage treatment technology.The paper introduces a new view of using microwave to treat sewage. This method is based on the principle that the microwaves are easily absorbed by polarization medium. It has many advantages, such as reaction speed, energy conservation, high efficient, easy control, no secondary pollution, etc.Based on the working principle of microwave, a microwave simple–microwave viscosity reactor is designed. The experiments of viscosity reduction effect under different microwave power and water quality are measured in the laboratory. Through the experiments, we can obtain that microwave viscosity reactor can not only effectively reduces the Hydrolyzed Polyacrylamide (HPAM) viscosity of water but also reduces the HPAM viscosity of wastewater, which also plays a role in the production wastewater on-site.Through the compare of polymer viscosity before and after experiments, we get that microwave makes water molecules and polyacrylamide macromolecular in aqueous solution rotate rapidly, shear mutually. At the apparent, mediums absorb microwave energy into heat, in the microscopic, the long molecular chain of polyacrylamide is interrupted by shear. Thus the effect of viscosity reduction is achieved.