Patent ID: 8801921
Filing Date: 2014-08-12
Classification: C02F,C10G,Y02A

Abstract:
1. A method of conducting water treatment of water produced from an in-situ recovery of bitumen from oil sand, comprising the steps of: subjecting a bitumen-mixed fluid to separation in a separator to obtain bitumen and a hot oil-containing water, the bitumen-mixed fluid being produced from an oil sand well; and filtering the hot oil-containing water at a temperature of from 85-135° C. with a microfiltration membrane made of polytetrafluoroethylene to produce a product water having a lowered oil content wherein the hot oil-containing water is filtered under an external or internal pressure with the microfiltration membrane having a hollow fiber structure, the microfiltration membrane has an outer diameter of 1-5 mm, an inner diameter of 0.5-4 mm, a porosity of 40-90% and continuous structures having a pore size of 0.01-0.45 μm and the microfiltration member is contained in a cross-flow filter system.