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Ultrafiltration experiment of electrodialysis pretreatment for produced water desalination
ZHEN Xiang-hua1,YU Shui-li1,WANG Bei-fu1,ZHENG Hai-feng1,BAN Hui2,MIAO Bao-lin2
(1. School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China;2. The Second Oil Production Plant of Daqing Oilfield,Daqing 163414, China)
Abstract:
The ultrafiltration experiment of electrodialysis pretreatment for produced water desalination in Daqing Oilfield was worked by taking polyvinylidene fluoride( PVDF) with a cut-off relative molecular weight of 10 X 104 as ultrafiltration membrane. The results show that a feed flow velocity from 3.0 to 3.5 m/s, a transmembrane pressure from 0.30 to 0.35 MPa and a temperature from 35 to 40 °C are the best operating conditions. The turbidity of the produced water treated by ultrafiltration decreases 95 % , and removing oil and suspension substance is up to 90%. The ultrafiltration technique can meet the requirements of electrodialysis pretreatment for produced water desalination.
Key words:  produced water  ultrafiltration  electrodialysis  pretreatment  operating conditions  reuse