Advanced treatment of oil recovery wastewater from polymer flooding by UV/H_2O_2/O_3 and fine filtration

Article type: Research Article

Authors: REN, Guang-meng | SUN, De-zhi | CHUNK, Jong Shik^;

Affiliations: School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China | Department of Chemical Engineering, Pohang University of Science and Technology, Pohang 790-784, Korea

Note: [] Corresponding author. E-mail: rgmhit@126.com

Abstract: In order to purify oil recovery wastewater from polymer flooding (ORWPF) in tertiary oil recovery in oil fields, advanced treatment of UV/H_2O_2/O_3 and fine filtration were investigated. The experimental results showed that polyacrylamide and oil remaining in ORWPF after the conventional treatment process could be effectively removed by UV/H_2O_2/O_3 process. Fine filtration gave a high performance in eliminating suspended solids. The treated ORWPF can meet the quality requirement of the wastewater-bearing polymer injection in oilfield and be safely re-injected into oil reservoirs for oil recovery.

Keywords: oil recovery wastewater from polymer flooding, UV/H[TeX:] _2O[TeX:] _2/O[TeX:] _3 process, polyacrylamide

Journal: Journal of Environmental Sciences, vol. 18, no. 1, pp. 29-32, 2006