- Qingqingquan
- Shandong
- 20 days
- 300 units per month
Industrial brackish water systems reduce TDS to <100mg/L. 35% energy savings with ERD. Download free technical guide.
Brackish Water Treatment Systems: 2025 Ultimate Guide
Key Challenges in Brackish Water Treatment
✔ High Salinity Range: 1,000-10,000 mg/L TDS
✔ Problem Ions: Boron/fluoride removal difficulties
✔ Corrosion Risks: Chloride attacks stainless steel
✔ Energy Consumption: Traditional RO uses 3-4kWh/m³
Industry Data: Brackish water could serve 2 billion people (WHO 2024)
3 Treatment Technologies Compared
1. Reverse Osmosis (BWRO)
• Rejection Rate: 90-98%
• Operating Pressure: 15-25 bar
• Innovations:
Energy recovery devices (35% savings)
Anti-fouling membranes (5-year lifespan)
2. Electrodialysis (ED)
• Best For: 3,000-8,000 mg/L TDS
• Advantages:
No high-pressure pumps
Modular scalability
3. Nanofiltration (NF)
| Parameter | Performance |
|---|---|
| MWCO | 200-400 Da |
| Hardness Removal | >95% |
| Pressure | 5-15 bar |
5 Critical Selection Factors
1. Water Analysis
Essential Tests:
• TDS/conductivity
• SiO₂ content
• SDI index
2. System Configuration
✔ Two-pass RO (high TDS)
✔ Advanced pretreatment (MMF+UF)
✔ Smart flush programs
3. Energy Optimization
Recommended:
• VFD high-pressure pumps
• Isobaric energy recovery
4. Material Selection
Must Use:
• Duplex 2205 stainless steel
• FRP pressure vessels
• EPDM seals
5. Smart Controls
✅ Cloud monitoring
✅ Predictive maintenance
✅ Mobile alerts
Project Case Studies
| Project | Technology | Product TDS | Energy Use |
|---|---|---|---|
| Inner Mongolia | BWRO+ERD | <200mg/L | 2.1kWh/m³ |
| Middle East Farm | Dual RO | <100mg/L | 3.8kWh/m³ |
| SE Asia Island | NF+UV | <500mg/L | 1.2kWh/m³ |
Maintenance Protocol
🔧 Daily: Log inlet/product conductivity
💧 Weekly: CIP warning (ΔP>15%)
🧪 Monthly: Membrane integrity test
⚠️ Quarterly: Corrosion inspection
Pro Tip: Keep last membrane element as spare
Free Resources
📥 Download: "Brackish Water Analysis Handbook"
🌍 Get: Free System Design
