Micro-membranes with pore size of 0.2 μm,0.5 μm and 0.8 μm were used to treat the black liquor of paper-making under the following experimental conditions:cross flow velocity 5 m8226;s-1
operation pressure 0.3 MPa and operation temperature 20℃.The separation of pollutants with inorganic membrane and the membrane cleaning method were investigated.Membrane separation used for black liquor recycling in the paper-making process was studied.