FIELD: chemistry.
SUBSTANCE: disclosed is a method for countercurrent regeneration of ion-exchange materials. The regeneration method includes a step of pressing an ionite layer with a stream of a liquid medium directed from the bottom upwards, a step for regeneration using acid and alkali solutions, a step for gravitational settling and washing ionites from residues of the regenerating solution. Minimum rates of feeding the acid and alkali are calculated based on the diameter of the filter in which regeneration is carried out and viscosity of the regenerating solutions.
EFFECT: invention prolongs the duration of the filter cycle and efficiency of purifying water using large-diameter filters.
1 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| IONITE REGENERATION METHOD | 2003 |
|
RU2241542C1 |
| METHOD OF COUNTERCURRENT REGENERATION OF IONITES | 1999 |
|
RU2149685C1 |
| METHOD OF WATER TREATMENT | 2005 |
|
RU2298529C2 |
| METHOD OF PRODUCING DESALINATED WATER | 2023 |
|
RU2821450C1 |
| METHOD OF REGENERATION OF ION-EXCHANGE RESINS | 1998 |
|
RU2144848C1 |
| ION-EXCHANGE TREATMENT METHOD FOR ORGANICS-CONTAINING WATER INVOLVING COUNTERCURRENT REGENERATION OF ION-EXCHANGE MATERIALS | 2002 |
|
RU2205692C2 |
| METHOD OF RECOVERING IONITES FROM SOLUTIONS | 0 |
|
SU1787946A1 |
| RESOURCE-SAVING IONITE WATER TREATMENT PLANT | 2023 |
|
RU2817630C1 |
| METHOD FOR REGENERATION OF SULFOCATIONITE | 1991 |
|
RU2031853C1 |
| COMPOSITION OF FILTRATION MATERIALS, PLANT AND METHOD FOR FINE CLEANING OF WATER FROM HARDNESS SALTS | 2008 |
|
RU2462290C2 |
