| 摘要 |
The present invention discloses a method of recovering oil from a vegetable oil mill effluent comprising the steps of reducing viscosity of the effluent by heating to a temperature of 50-95 oC; filtering the heated effluent to remove solids; passing the treated effluent into a ceramic membrane module (1) to separate of oil and water into a filtrate and a concentrate; and recovering oil by centrifuge the concentrate from the ceramic membrane module (1), wherein the ceramic membrane module (1) comprises a cylindrical housing (2) having an inlet (5) at one end, a permeate outlet (7) at other end, and retentate outlets (6) at the outer peripheral wall surface of the housing (2); and a porous ceramic membrane (3) having a plurality of through-channels (4) disposed within the housing (2) and extended from one end of the housing (2) to another end of the housing (2), wherein the pore size is 1-5000 nm and the molecular weight cut-off is 1,000-10,000,000 Da, wherein the ceramic membrane (3) is supported by material made from TiO2, ZrO2, Al2O3, SiC, or any two or above. |
