FIELD: chemistry.
SUBSTANCE: proposed method involves ionising water in cation- and anion-exchange filters, regeneration of filters and electrochemical treatment of waste regenerant solution after regeneration of anion-exchange filters in the middle chamber of a three-chamber electrolysis unit with ion-exchange membranes at current density 400-800 A/m². The alkali and acid formed in the cathode and anode chambers are used for regenerating ion-exchange filters.
EFFECT: simplification of water demineralisation process, reduced concentration of sulphates and chlorides in waste regenerant solution with possibility of its repeated use.
1 dwg, 2 tbl, 2 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF PRODUCTION OF DESALTED WATER | 1997 |
|
RU2136604C1 |
| RECOVERY METHOD OF LITHIUM CHLORIDE, DIMETHYLACETAMIDE AND ISOBUTYL ALCOHOL OR LITHIUM CHLORIDE AND DIMETHYLACETAMIDE FROM PROCESS SOLUTIONS FOR PRODUCTION OF PARA-ARAMID FIBRES | 2014 |
|
RU2601459C2 |
| METHOD FOR HIGH-DEGREE ION-EXCHANGE WATER DEMINERALIZATION | 0 |
|
SU1682322A1 |
| METHOD FOR ELECTROCHEMICAL PRODUCTION OF SILVER NITRATE AND SODIUM HYDROXIDE | 2004 |
|
RU2252979C1 |
| METHOD OF CLEANING SEWAGE FROM DISSOLVED IMPURITIES | 0 |
|
SU1723047A1 |
| METHOD OF OBTAINING CARBOXYLIC ACID AND ALKALI | 1991 |
|
RU2016636C1 |
| DEVICE FOR RECOVERY OF LIQUID RADIOACTIVE WASTES | 1994 |
|
RU2095866C1 |
| METHOD OF UTILIZATION OF THE SOLUTIONS FORMED AT REPROCESSING OF THE SPENT LEAD ACCUMULATORS | 2005 |
|
RU2304627C1 |
| METHOD OF CLEANING AND CONCENTRATING CHLORINE COMPLEXES OF PLATINUM METALS BY ELECTROLYSIS METHOD | 2002 |
|
RU2226225C1 |
| METHOD OF REGENERATION OF CATIONIC EXCHANGE FILTERS | 0 |
|
SU1386289A1 |
