| 摘要 |
PCT No. PCT/SE94/00980 Sec. 371 Date Jun. 27, 1996 Sec. 102(e) Date Jun. 27, 1996 PCT Filed Oct. 18, 1994 PCT Pub. No. WO95/11325 PCT Pub. Date Apr. 27, 1995The invention relates to a method of purifying contaminated degreasing liquids including (a) adding a collection polymer or polymer mixture forming two phases to the degreasing liquid; (b) mixing the collection polymer with the degreasing liquid; (c) separating the collection polymer and the degreasing liquid gravimetrically, whereby the collection polymer and the major part of the contaminants form a hydrophobic bottom phase and the degreasing agent forms a hydrophilic top phase; (d) removing the bottom phase; and (e) reusing the top phase directly or for further processing. |
