| 摘要 |
PCT No. PCT/SE83/00222 Sec. 371 Date Jan. 20, 1984 Sec. 102(e) Date Jan. 20, 1984 PCT Filed Jun. 2, 1983 PCT Pub. No. WO83/04185 PCT Pub. Date Dec. 8, 1983.An apparatus for high-degree purification of liquid contaminated by solvent comprises a vessel (1) of flat configuration, the liquid (16) being caused to flow through the vessel at a given level (17) determined by an overflow (19) or the like. The liquid flows in a thin stratum above holed air outlet elements (21) separated by liquid compartments (23), said elements (21) distributing the purification air uniformly in the liquid in the form of small bubbles. The elements (21) preferably have the form of perforated tubes, arranged separated and in parallel transversely across the bottom (11) of the vessel. The residue concentration of solvent in the outlet water can be kept under 1 ppm. |
