PROCESS AND APPARATUS FOR REGENERATING ADSORBENTS AND WASTE WATER TREATMENT EMBODYING THE SAME

摘要

ABSTRACT OF THE DISCLOSUREAn adsorbate is removed from an adsorbent by contact-ing the adsorbent with a supercritical fluid which is a solventfor the adsorbate. The supercritical fluid containing the dis-solved adsorbate is then subjected to a physical treatment whichrenders the supercritical fluid a nonsolvent for the adsorbateand makes it possible to remove the adsorbate from the super-critical fluid. The supercritical fluid is then subjected toanother physical treatment to restore it to a state wherein itis a solvent for the adsorbate so that it may be reused. Theprocess and apparatus are particularly suitable for adsorbentregeneration in the treating of waste water.