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About DM Plant

Brief

A Demineralization (DM) Plant is a water treatment system that removes minerals, salts, and ions to produce high-purity water for industrial and laboratory applications. Unlike Reverse Osmosis (RO), which removes most impurities, DM plants use ion exchange resins to eliminate dissolved ions, producing near-distilled quality water. 

How Does a Demineralization Plant Work?

DM plants use ion exchange resins to replace unwanted ions with hydrogen (H⁺) and hydroxide (OH⁻) ions, resulting in pure water. The process involves:

1. Cation Exchange Unit

  • Removes positively charged ions (Ca²⁺, Mg²⁺, Na⁺) by exchanging them with H⁺ ions.
  • Uses strong acid cation (SAC) resin.

2. Anion Exchange Unit

  • Removes negatively charged ions (Cl⁻, SO₄²⁻, HCO₃⁻) by exchanging them with OH⁻ ions.
  • Uses strong base anion (SBA) resin

3. Mixed Bed Polishing

  • A mix of cation & anion resins further purifies water to <1 µS/cm conductivity

Types of Demineralization Systems

 Two-Bed DM :- Separate cation & anion tanks 

 Mixed Bed DM :- Combined resin for final polishing

 RO + DM Hybrid :- RO pre-treatment + DM polishing  

Applications of DM Plants

Applications of DM Plants

Applications of DM Plants

 ✔ Power Plants (boiler feed water to prevent scaling)
✔ Pharmaceuticals (requires ultra-pure water)
✔ Electronics Manufacturing (semiconductors, PCB washing)
✔ Chemical & Petrochemical Industries
✔ Laboratories & Hospitals (high-purity water for experiments) 

Advantages of DM Plants

Applications of DM Plants

Applications of DM Plants

 ✅ Removes all ionic impurities (unlike RO, which leaves some).
✅ Produces ultra-pure water (near-distilled quality).
✅ No scaling risk (ideal for high-pressure boilers). 

Disadvantages

Applications of DM Plants

Disadvantages

 ❌ High operational cost (resin regeneration requires acid & alkali).
❌ Not for drinking water (removes all minerals, making it tasteless).
❌ Requires frequent maintenance (resin exhaustion, chemical handling).
 

Contact Us

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We love our customers, so feel free to visit during normal business hours.

Water Wise Solutions

208 AAKASHDEEP COMPLEX, Sapna Sangeeta Road, Sneh Nagar, Indore, Madhya Pradesh, India

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