Electrodeionization Equipment - EDI Water Treatment Systems

Intro: Need chemical-free ultra-pure water? Our EDI systems deliver consistent 18.2 MΩ·cm water quality with zero chemical regeneration. Perfect for pharmaceuticals, microelectronics, and power generation industries.

What is EDI Technology?

Electrodeionization (EDI) is an advanced water purification technology that combines ion exchange membranes, resin, and electrical current to remove ions without chemical regeneration.

Technology Integration:

• Ion Exchange Membranes: Selective permeability for ions
• Resin Technology: Enhanced ion removal efficiency
• Electrical Migration: Continuous regeneration process
• No Chemicals: Environmentally friendly operation

How EDI Systems Work

Three Stream Separation Process:

• Product Water (90-95%): Ultra-pure output
• Concentrate Stream (5-10%): Recyclable waste
• Electrode Stream (1%): Minimal discharge

Key Process Stages:

• Ion Removal: Cations and anions migrate through selective membranes
• Continuous Regeneration: Water molecules split to regenerate resin
• Quality Enhancement: Upgrades RO water from 1.0 MΩ·cm to 18.2 MΩ·cm

6 Major Advantages of EDI Systems

1. Chemical-Free Operation

• No acid or caustic chemicals required
• Zero chemical wastewater discharge
• Environmentally sustainable process
• Safe working environment

2. Continuous Production

• Non-stop ultra-pure water generation
• Consistent output quality maintained
• No downtime for regeneration
• Stable resistivity 5-18.2 MΩ·cm

3. Low Operating Costs

• Reduced maintenance requirements
• Minimal energy consumption
• No chemical handling costs
• Long-term cost savings

4. Automated Control

• Fully automatic operation
• Remote monitoring capability
• Minimal operator intervention
• Advanced control systems

5. Compact Design

• Space-saving footprint
• Reduced facility requirements
• Modular configuration
• Easy integration

6. Reliable Performance

• Stable long-term operation
• Reduced maintenance frequency
• Quality consistency
• Technical support available

Technical Specifications

Industry Applications

Microelectronics Manufacturing:

• Semiconductor production
• PCB manufacturing
• Integrated circuits
• Display panel cleaning

Pharmaceutical Industry:

• Water for injection (WFI)
• Equipment cleaning
• Process water
• Laboratory applications

Power Generation:

• High-pressure boiler feed
• Turbine generator cooling
• Demineralized water supply

General Industry:

• Surface treatment
• Electroplating processes
• Chemical production
• Laboratory research

EDI vs Mixed Bed Comparison

Installation Requirements

Basic Site Conditions:

• Level, solid foundation
• Minimum inlet pressure: 0.2 MPa
• Clean feed water piping
• Adequate drainage facilities

Operational Considerations:

• Pre-filtered feed water essential
• Regular salt replenishment
• Six-hour salt dissolution time
• Professional installation recommended

Service & Support

Professional Services:

• System design and engineering
• Installation supervision
• Operator training programs
• Maintenance contracts

Technical Support:

• 24/7 emergency service
• Remote monitoring options
• Spare parts supply
• Performance optimization