- Qingqingquan
- Shandong
- 20 days
- 300 units per month
Ion exchange systems deliver 18MΩ·cm water for electronics. Case shows 30-day regeneration cycles. Download technical guide now.
Ion Exchange Pure Water System - Industrial-Grade Ultra-Pure Water Solution
(Compliant with ASTM D1193 Standard)
1. Core Advantages of Ion Exchange Technology
Why is it still the gold standard for ultra-pure water?
🔬 Ultimate Purity:
• Water resistivity of 1-18 MΩ·cm (RO only 0.05-1 MΩ·cm)
• Removes 99.99% of ionic impurities
💰 Cost-effectiveness:
• Equipment investment is 40% lower than EDI systems
• No electricity required (only water pressure needed)
Industry data: The global ion exchange resin market is projected to reach $2.5 billion by 2025 (MarketsandMarkets).
2. Working Principle Diagram
Three-step water purification process
① Cation exchange
• Reaction equation: R-H + Na⁺ → R-Na + H⁺
• Removes: Ca²⁺, Mg²⁺, Na⁺, etc.
② Anion exchange
• Reaction equation: R-OH + Cl⁻ → R-Cl + OH⁻
• Removes: Cl⁻, SO₄²⁻, HCO₃⁻, etc.
③ Mixed-bed polishing
• H⁺ and OH⁻ combine to form H₂O
• Conductivity can be reduced to <1 μS/cm
Process Comparison:
| Type | Output Water Resistivity | Operating Cost | Application Scenarios |
|---|---|---|---|
| Single-Stage Mixed Bed | 1-5 MΩ·cm | Low | General electronic cleaning |
| Dual-Stage Mixed Bed | 10-18 MΩ·cm | Medium | Semiconductor/Photovoltaic |
3. Key Performance Parameters
Standard Configuration and Custom Options
✔ Inlet water requirements:
• Conductivity ≤ 300 μS/cm (RO pretreatment recommended)
• Pressure 0.2–0.5 MPa
✔ Outlet water quality:
• Standard type: 1–10 μS/cm
• High-purity type: ≤ 1 μS/cm (resistivity ≥ 1 MΩ·cm)
✔ Regeneration method:
• Manual multi-valve control (economical type)
• Fully automatic regeneration (requires PLC control)
4. Successful Case: Wafer Fab Ultra-Pure Water System
Project for a semiconductor company in Shanghai
1. Raw Water: RO permeate (conductivity 5 μS/cm)
2. Solution:
• Two-stage mixed-bed series design
• Fully automatic acid-base regeneration system
3. Results:
✅ Stable output resistivity of 15 MΩ·cm
✅ Regeneration cycle extended to 30 days
✅ Certified to TS16949
5. Selection Guide
3 Key Decision Points
1️⃣ Resin Selection:
• Electronic Grade: Nuclear-grade uniform-particle resin (e.g., Dowex™ Marathon)
• Industrial Grade: Macroporous resin
2️⃣ Control System:
• Manual valve (suitable for low flow rates)
• Automatic multi-port valve (recommended for flow rates >2 T/H)
3️⃣ Supporting Equipment:
• Requires acid/base storage tanks + neutralization tank
Our Services:
✔ Free water quality analysis
✔ Resin lifespan estimation report
✔ Regeneration operation training
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