Natural occurring water contains many dissolved solids in dilute forms which are usually various types of salts. These solids are known as TDS. Demineralization, also known as deionization, is a process which removes minerals salts from water through the ion exchange procedure. Both cation and anion are removed through this process which is also known as deionization. In other words, it is a wastewater treatment process.
De-mineralization Water Treatment is a physical process. Ion exchange resins are specially manufactured which help to replace the mineral salts in water. There are two types of resins – anion exchange and cation exchange resins. The former resins release hydroxyl ions which are usually negatively charged ions. The cation resins release hydrogen ions which are usually positively charged ions.
The ETP Plants works at various levels and involves various physical, chemical, biological and membrane processes to treat waste water from different industrial sectors like chemicals, drugs, pharmaceutical, refineries, dairy, ready mix plants & textile etc.
Positively-charged ions are known as Cations. These are usually metals:
- Iron
- Calcium
- Magnesium
- Copper
- Sodium
- Potassium
Negatively-charged ions are known as Anions. These are usually non-metals:
- Chloride
- Carbonate
- Sulphate
- Bicarbonate
- Nitrate
High-purity water obtained through deionization process basically does not have any ionic impurities. Hence, it is highly preferred by many laboratories and industries for smooth processing of their units.
