- Qingqingquan
- Shandong
- 20 days
- 300 units per month
Professional EDI systems for AdBlue production. 0.1μS/cm output, 0.5-100m³/h capacity. ISO 22241 compliant. Download technical specs & case studies!
Automotive Urea (AdBlue) EDI Ultrapure Water Systems - 2025 Technical Guide
Why 15MΩ·cm Water is Critical for AdBlue Production
✔ Prevents SCR system damage - Eliminates 99.9% metal ions
✔ Ensures ISO 22241 compliance - Meets strict DIN 70070 standards
✔ Reduces crystallization risk - <0.1ppm TDS for stable solutions
✔ Extends injector lifespan - Minimizes nozzle clogging
Industry Fact: 32.5% urea purity requires <0.5μS/cm water conductivity
3 System Configurations
1. RO + Mixed Bed (10-15MΩ·cm)
For: Small-scale producers (<5T/day)
Recovery Rate: 65-75%
2. Double RO + EDI (15-17MΩ·cm)
For: Medium plants (5-50T/day)
Feature: Chemical-free operation
Energy Use: 1.2kWh/m³
3. Triple RO + Polished EDI (18MΩ·cm)
For: OEM suppliers & export
Advantage: <1ppb silica & sodium
Technical Specifications
| Parameter | Specification |
|---|---|
| Conductivity | ≤0.1μS/cm |
| TOC | <50ppb |
| Heavy Metals | <0.1ppb |
| Flow Range | 0.5-100 m³/h |
| Materials | 316L SS/PTFE/PVDF |
4 Competitive Advantages
✔ Automated dosing control - ±0.5% urea concentration accuracy
✔ Military-grade prefilters - 10,000L/hr flow capacity
✔ 0.05% failure rate - Most reliable in industry
✔ Including anti-scaling EDI tech
Case Study: Increased catalyst lifespan by 28% for Volvo supplier
Core Technologies
1. Pretreatment System
• Sand filters: Remove >50μm particles
• Carbon tanks: Reduce chlorine <0.1ppm
• Softener: Hardness <1mg/L as CaCO₃
2. RO Membrane Stack
• Elements: Dow Filmtec/DuPont
• Rejection Rate: 99.5% @ 15bar
3. EDI Module
• Voltage: 200-400V DC
• Continuous regeneration - No salt needed
• Resin lifespan: 6-8 years
Production Process
1. Raw Water → Multimedia Filtration → Activated Carbon Adsorption
2. → Reverse Osmosis (Primary) → Reverse Osmosis (Secondary) → EDI Polishing
3. → 0.2μm Final Filtration → Urea Mixing Station
Quality Checkpoints:
• Daily conductivity tests
• Weekly ICP-MS metal analysis
• Monthly silica monitoring
Maintenance Protocol
✅ Daily: SDI & pressure checks
✅ Weekly: CIP membrane cleaning
✅ Monthly: Resin bed sanitization
✅ Quarterly: Electrode inspection
✅ Annually: Full system recertification
Pro Tip: Maintain <5°C feed water for optimal EDI performance
Industry Applications
1. AdBlue Manufacturing
• Bulk DEF production
• ISO 22241 certified plants
2. Truck Fleet Stations
• On-site urea generation
• Mobile purification units
3. Automotive OEMs
• Factory fill systems
• Quality control labs
