High-Purity Water for Critical Applications
A Deionization (DI) Plant is a water purification system that removes dissolved salts, minerals, and ionic impurities through ion exchange technology. Unlike conventional filtration, DI plants produce ultra-pure water with very low conductivity, making them essential in industries where high-purity process water is required, such as electronics, pharmaceuticals, laboratories, and power generation.
Ralsonics DI Plants are designed with advanced ion exchange resins, robust construction, and intelligent controls to deliver consistent and reliable deionized water for industrial and institutional needs.

Deionization works on the principle of ion exchange:
| Parameter | Specification |
|---|---|
|
Flow Rate |
100 LPH – 50,000+ LPH |
|
Conductivity of Output |
≤ 0.1 – 5 µS/cm |
|
pH of Treated Water |
Neutral (6.5 – 7.5) |
|
Material of Construction |
FRP / MSRL / SS 304 / SS 316 |
|
Resin Type |
Strong Acid Cation (SAC), Strong Base Anion (SBA), Mixed Bed (MB) |
|
Operation |
Manual / Semi-Automatic / PLC-SCADA |
|
Regeneration |
Acid (HCl/H₂SO₄) & Alkali (NaOH) / CEDI (no regeneration) |
|
Optional Add-ons |
UV Disinfection, Ozone Treatment, Mixed Bed Polisher |
Both use ion exchange, but DI plants are optimized for ultra-pure water (very low conductivity), while DM plants are designed for general demineralization.
Resins typically last 3–5 years, depending on feed water quality and regeneration practices.
Two-Bed & Mixed Bed DI Plants – Require periodic regeneration using acids and alkalis. CEDI Plants – Do not require chemical regeneration.