FIELD: process engineering.
SUBSTANCE: invention relates to treatment of solutions used in recovery of sodium cation-exchnage filter in water treatment. Proposed method comprises adding to regenerant including hard salts (MgCl2, CaCl2) of fine-disperse sorbent in the form of fibrillated cellulose fibers, step-by-step treatment of regenerant by stoichiometric amount of alkali at first step and sodium carbonate at second step to form dispersions containing fibrous particles with Mg(OH)2 and CaCO3 particles bonded thereto, respectively. Then, dispersions are saturated and floated to extract flotation slime. Magnesium and calcium compounds are extracted separately at every step.
EFFECT: simplified continuous process.
4 cl, 1 dwg, 1 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF WATER SOFTENING AND DEIRONING | 2013 |
|
RU2541017C1 |
| METHOD OF PURIFYING ACIDIC WASTE WATER FROM HEAVY METAL IONS | 2011 |
|
RU2480419C1 |
| METHOD OF PRODUCING COMPOSITE SORBENT BASED ON MAGNESIUM CARBONATE AND MAGNESIUM HYDROXIDE | 2012 |
|
RU2498850C1 |
| METHOD PURIFYING WASTE WATER FROM ALUMINIUM IONS | 2011 |
|
RU2468997C1 |
| METHOD FOR REGENERATION OF ELUATES OF SODIUM-CATION FILTERS | 2020 |
|
RU2756617C1 |
| METHOD OF PRODUCING COMPOSITE BACTERICIDAL PREPARATION | 2011 |
|
RU2474121C1 |
| METHOD OF PURIFYING WASTE WATER FROM HEAVY METAL IONS | 2011 |
|
RU2488561C2 |
| METHOD OF SEPARATING THORIUM-228 AND RADIUM-224 | 2012 |
|
RU2513206C1 |
| METHOD OF SORBENT PURIFICATION OF SEWAGES FROM CHROME(III), IRON(III), COPPER(II) AND CADMIUM(II) IONS | 2012 |
|
RU2500623C1 |
| PROCESSING METHOD OF PALLADIUM DEAD CATALYSTS | 2012 |
|
RU2493275C1 |
