| 摘要 |
<p>PCT No. PCT/DK93/00148 Sec. 371 Date Oct. 28, 1994 Sec. 102(e) Date Oct. 28, 1994 PCT Filed May 3, 1993 PCT Pub. No. WO93/22037 PCT Pub. Date Nov. 11, 1993A dispersion having an aqueous phase is filtered by a purality of membranes connected to pass the retentate or a portion of the retentate from one membrane step is used for feeding the one or more succeeding steps, and the permeate resulting from the plurality of membranes is subjected to a concentration step to produce a concentrate containing an increase concentration of dry matter, which is returned as a portion of the feeding dispersion to one or more of the plurality of membranes. The system provided with the membranes and concentration units and recirculation conduits is also disclosed.</p> |
