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Industrial EDI Cell for High Purity Water Treatment
Continuous Electrodeionization (EDI) Module for RO-EDI Systems
Introduction
CHONGYANG WATER EDI Cells are designed to continuously produce high-purity water without the need for chemical regeneration. Installed downstream of a reverse osmosis (RO) system, an Electrodeionization (EDI) Cell removes remaining dissolved ions through a combination of ion exchange resins, ion-selective membranes, and direct current electricity.
Compared with conventional mixed-bed ion exchange systems, EDI technology provides stable water quality, lower operating costs, and fully automatic operation while eliminating the use of acid and caustic chemicals for resin regeneration.
Our industrial EDI cells are available in multiple capacities and are widely integrated into RO-EDI water purification systems for industries including power generation, semiconductor manufacturing, electronics, biotechnology, laboratory water, chemical processing, surface coating, hydrogen energy, automotive urea (AdBlue®/DEF) production, and other industrial high-purity water applications.
What Is an EDI Cell?
An EDI Cell (Electrodeionization Module) is the core component of a continuous deionization system. It combines mixed ion-exchange resins, cation exchange membranes, anion exchange membranes, and a DC electrical field to continuously remove dissolved ionic contaminants from RO permeate.
Unlike traditional ion exchange systems that require periodic chemical regeneration, EDI cells regenerate the resin continuously using electricity. This allows uninterrupted operation while significantly reducing maintenance, chemical handling, and wastewater generation.
A standard RO-EDI system typically consists of:
Pretreatment System
Reverse Osmosis (RO)
RO Permeate Tank
Booster Pump
EDI Cell
UV Sterilizer (Optional)
Final Filter (Optional)
High Purity Water Tank
Distribution System
This configuration delivers consistently low conductivity water suitable for demanding industrial applications.
Typical Applications
CHONGYANG WATER EDI Cells are widely used in industries requiring continuous high-purity water production, including:
Power Plant Boiler Feed Water
Semiconductor & Electronics Manufacturing
Solar PV Industry
Biotechnology Process Water
Laboratory High-Purity Water
Chemical Processing
Surface Treatment & Electroplating
Automotive Urea (DEF/AdBlue®) Production
Food & Beverage Process Water
Hydrogen Energy
Fine Chemical Production
Industrial Process Water
Our EDI modules can be integrated into new systems or retrofitted into existing RO plants.
Key Features
| Feature | Benefit |
|---|---|
| Continuous Electrodeionization | No chemical regeneration required |
| High Purity Water | Typical conductivity ≤0.1 μS/cm |
| Stable Water Quality | Consistent operation with minimal fluctuations |
| Low Operating Cost | Reduced chemical and maintenance expenses |
| Environmentally Friendly | No acid or caustic regeneration chemicals |
| Modular Design | Easy installation and capacity expansion |
| Automatic Operation | Compatible with PLC and SCADA control systems |
| Long Service Life | High-quality ion exchange membranes and resins |
| Energy Efficient | Low power consumption during operation |
| Easy Maintenance | Simple module replacement and routine inspection |
Technical Specifications
| Model | YKF-500 | YKF-1000 | YKF-2000 | YKF-3000 |
|---|---|---|---|---|
| Product Type | Industrial EDI Cell | Industrial EDI Cell | Industrial EDI Cell | Industrial EDI Cell |
| Flow Rate | 0.5 m³/h | 1.0 m³/h | 2.0 m³/h | 3.0 m³/h |
| Feed Water | RO Permeate | RO Permeate | RO Permeate | RO Permeate |
| Product Conductivity | ≤0.1 μS/cm | ≤0.1 μS/cm | ≤0.1 μS/cm | ≤0.1 μS/cm |
| Recovery Rate | Up to 95% | Up to 95% | Up to 95% | Up to 95% |
| Operating Pressure | 2–6 bar | 2–6 bar | 2–6 bar | 2–6 bar |
| Operating Temperature | 5–40°C | 5–40°C | 5–40°C | 5–40°C |
| Power Supply | DC | DC | DC | DC |
Models and capacities can be customized according to project requirements.
How an EDI Cell Works
The EDI process begins with RO permeate entering the EDI cell. Inside the module, mixed-bed ion exchange resins capture residual dissolved ions, while a direct current electric field continuously regenerates the resin.
Cation exchange membranes allow positively charged ions to migrate toward the cathode, while anion exchange membranes transport negatively charged ions toward the anode. These ions are concentrated in separate reject channels and discharged continuously.
Because the resin is regenerated electrically rather than chemically, the system operates continuously without shutdown for regeneration.
The result is a stable supply of ultra-low conductivity water with minimal operator intervention.
Advantages of CHONGYANG WATER EDI Cells
High-quality ion exchange membranes
Stable continuous operation
Excellent desalination performance
Low energy consumption
Compact modular design
Easy integration with RO systems
Compatible with Siemens PLC and SCADA
Factory performance testing before delivery
Custom engineering support
Worldwide technical assistance
Why Choose CHONGYANG WATER?
CHONGYANG WATER specializes in designing and manufacturing industrial high-purity water systems. In addition to EDI cells, we provide complete RO-EDI solutions, pretreatment systems, storage and distribution systems, and automated control panels.
Our engineering team supports customers throughout the entire project lifecycle—from process design and equipment selection to factory acceptance testing (FAT), installation guidance, commissioning, and after-sales service.
With extensive experience serving customers across Asia, Europe, the Middle East, Africa, and South America, we deliver reliable, energy-efficient, and customized water treatment solutions tailored to your specific application.
Frequently Asked Questions
Does an EDI Cell require chemical regeneration?
No. The resin inside the EDI cell is continuously regenerated by electricity.
What feed water is required?
EDI cells are designed to operate with high-quality RO permeate.
Can the EDI Cell replace a mixed-bed ion exchange system?
Yes. In most industrial high-purity water applications, an EDI cell can replace traditional mixed-bed ion exchange, reducing chemical consumption and maintenance.
What conductivity can be achieved?
Typical product water conductivity is ≤0.1 μS/cm, depending on the quality of the RO permeate and system design.
Can the module be integrated into an existing RO system?
Yes. CHONGYANG WATER EDI cells are suitable for both new installations and upgrades to existing RO systems.
Contact CHONGYANG WATER
Looking for a reliable Industrial EDI Cell or a complete RO-EDI High Purity Water System?
CHONGYANG WATER provides customized EDI modules, RO systems, control panels, and turnkey water purification solutions for a wide range of industrial applications.
Contact our engineering team today to discuss your project requirements and receive a customized technical proposal.
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