Study On Ultrafiltration Treatment Petroleum Micropolluted Source Water

The paper discusses the general situation of petroleum micropolluted source water treatment,summarized petroleum micropolluted source water treatment system and the leve of treatment,aslo study the developing tendency and ultrafiltration used in this field home and abroad.Use the ultrafiltration treat petroleum micropolluted source water and study the ultraflitration membrane's material,molecular weight cut-offs,and the petroleum micropolluted source water's petroleum concentrations,temperature,pH impact the removal efficiency.The pilot-scale result show that the ultrafiltration treatment petroleum micropolluted source water treatment have a good effect.When the petroleum is content blowe 0.5mg/L the removal efficiency achieve 100%,When the petroleum is content above 1.0mg/L the removal efficiency more than 80%.Under the different pH conditions the pilot-scale result show that when the petroleum micropolluted source water's pH blowe 5 the removal efficiency increase with the pH reduction,it's because that in acidic conditions the petroleum's negativity decrease and the hydrophobic strengthen so the membrane could adsorption more petroleum so the removal efficiency increase;When the petroleum micropolluted source water's pH above 9 the removal efficiency increase with the pH elevation,it's because that in alkaline conditions the petroleum's surface activity changed so the removal efficiency increase.In the ultraflitration process,the petroleum micropolluted source water' temperature have the very tremendous influence about the removal efficiency.The pilot-scale result show that when the petroleum micropolluted source water' temperature increase the removal efficiency decrease,it's it's because that when the temperature increase and the petroleum micropolluted source water' viscosity reduces gradually and the petroleum mass transfer efficiency increase so the removal efficiency decrease.Under the different ultraflitration membrane's material,the result show that at the beginning running the PS membrane's removal efficiency above PE membrane.After 30 minute,the membrane's surface forms cake level so the two membrane's removal efficiency tends to be consistent.It is said that the ultraflitration membrane's material affect the removal efficiency not obviously.