公开(公告)号：US3803030A

公开(公告)日：1974-04-09

申请号：US27933972

申请日：1972-08-10

Applicant: FRAM CORP

Inventor： MONTANARO R ,  MOREAU H

IPC: B01D15/00 ,  B01J47/00 ,  C02F1/28 ,  B01D15/06

CPC classification number: C02F1/285 ,  B01D15/00 ,  B01J47/014 ,  Y10S203/17

Abstract: The process of removing contaminants from a liquid medium, comprising the steps of A. CONTACTING A QUANTITY OF THE CONTAMINATED LIQUID MEDIUM WITH A SOLVENT REGENERABLE FIRST ADSORBENT DURING A FIRST PHASE, THAT ADSORBENT HAVING AN AFFINITY FOR THE CONTAMINANTS AND A VOLUME WHICH ARE INSUFFICIENTLY HIGH TO PRODUCE A DESIRED DEGREE OF PURIFICATION DURING THE FIRST PHASE, WHEREBY A FRACTION OF THE CONTAMINANTS IS ADSORBED BY THE FIRST ADSORBENT AND A PARTIALLY PURIFIED EFFLUENT OF THE MEDIUM IS PRODUCED, B. CONTACTING THE PARTIALLY PURIFIED EFFLUENT FROM SAID FIRST PHASE WITH AN IONIC SOLUTION REGENERABLE SECOND ADSORBENT HAVING AN AFFINITY FOR THE CONTAMINANTS AND A VOLUME WHICH ARE SUFFICIENTLY HIGH TO PRODUCE THE DESIRED DEGREE OF PURIFICATION, C. REGENERATING THE FIRST ADSORBENT WITH A SOLVENT, D. CONTACTING A REGENERANT WITH THE SECOND ADSORBENT TO REMOVE THE CONTAMINANTS ADSORBED THEREON, AND E. CONTACTING THE EFFLUENT FROM STEP (D), COMPRISING THE REGENERANT AND THE CONTAMINANTS REMOVED THEREBY, WITH THE FIRST ADSORBENT, WHEREBY AN ADDITIONAL FRACTION OF THE CONTAMINANTS IS ADSORBED BY THE FIRST ADSORBENT.