Veolia Electrodeionization EDI Stack Modules
E-Cell™ EDI MK-5 Stack Continuous Ultrapure Water Lower Energy Smarter Industrial Performance.
Advanced electrodeionization for demanding industrial applicationsThe E-Cell™ EDI MK-5 Stack delivers reliable, continuous ultrapure water for industries where water quality, system uptime, and operating efficiency are critical.Using electrical current to regenerate the ion exchange resin inside th
Advanced electrodeionization for demanding industrial applications
The E-Cell™ EDI MK-5 Stack delivers reliable, continuous ultrapure water for industries where water quality, system uptime, and operating efficiency are critical.
Using electrical current to regenerate the ion exchange resin inside the stack, the MK-5 eliminates the need for acid or caustic regeneration. With no brine injection and no concentrate recirculation, it offers a cleaner, simpler, and more efficient approach to ultrapure water production.
Designed for semiconductor manufacturing, power generation, solar panel production, green hydrogen, and other heavy industrial applications, the E-Cell™ EDI MK-5 Stack combines high product water quality with low energy consumption and dependable long-term performance.
High-Purity Water. Continuous Performance.
The E-Cell™ EDI MK-5 Stack is engineered to meet the demanding requirements of modern ultrapure water systems.
Performance highlights
Product water resistivity of up to ≥16 MΩ·cm
Sodium concentration of ≤3 ppb
Silica levels as low as 5 ppb
Boron levels as low as 0.08 ppb
Sodium removal of ≥99.9%
Silica removal of up to 99%
Boron removal of up to 96%
Recovery of up to 97%
Continuous operation without acid or caustic regeneration
No brine injection or concentrate recirculation
Reduced cleaning requirements with counter-current operation
Guaranteed leak-free operation backed by a standard 3-year prorated warranty
Actual performance depends on feed water quality, operating conditions, system configuration, and site-specific requirements. Performance guarantees are available for qualified design conditions.
Built for Critical Industrial Processes
From advanced electronics manufacturing to high-pressure boiler systems, the E-Cell™ EDI MK-5 Stack provides the high-purity water your process depends on.
Typical applications
Ultrapure rinse water for semiconductor chips
Solar panel and microelectronics manufacturing
Demineralized boiler feed water for power plants
High-pressure boiler systems in heavy industry
Ultrapure water for electrolyzer-based green hydrogen production
Other industrial processes requiring consistent, high-quality water
A Smarter Alternative to Chemical Regeneration
The MK-5 uses electrical current to continuously regenerate the ion exchange resin within the stack. This helps simplify system operation while reducing chemical handling and maintenance requirements.
Operational advantages
Continuous ultrapure water production
No acid or caustic regeneration
No brine injection
No concentrate recirculation
Lower chemical consumption
Reduced operator intervention
Compact design for straightforward system integration
Efficient operation with low energy demand
With counter-current operation, the stack can also help minimize cleaning requirements when operating with higher feed water hardness levels.
Designed for Reliable System Integration
Technical specifications
| Parameter | Specification |
|---|---|
| Nominal flow rate | 5.0 m³/h / 22 gpm |
| Flow rate range | 2.3–6.4 m³/h / 10–28 gpm |
| Recovery | Up to 97% |
| Operating voltage | 0–400 VDC |
| Operating current | 0–5.2 ADC |
| Maximum inlet pressure | 6.9 bar / 100 psi |
| Pressure drop | 1.4–2.8 bar / 20–40 psi |
| Shipping weight | 165 kg / 364 lb |
| Dimensions, W × H × D | 30 × 61 × 72 cm / 12 × 24 × 29 in |
Pressure drop is based on nominal flow at 25°C. Actual values may vary depending on operating conditions and system design.
Feed Water Requirements
For stable performance and long service life, the E-Cell™ EDI MK-5 Stack should be supplied with properly conditioned feed water, typically RO permeate or equivalent-quality water.
| Feed Water Parameter | Requirement |
|---|---|
| Total exchangeable anions, as CaCO₃ | ≤65 ppm |
| Conductivity equivalent | ≤112 μS/cm |
| Temperature | 4.4–40°C / 40–104°F |
| Total hardness, as CaCO₃ | ≤1.0 ppm |
| Silica, SiO₂ | ≤1.0 ppm |
| Total organic carbon, as C | ≤0.5 ppm |
| Total chlorine | ≤0.05 ppm |
| Iron, manganese, and hydrogen sulfide | ≤0.01 ppm |
| Boron | ≤1.0 ppm |
| pH | 4–11 |
| Oil and grease | None detectable |
| Particulates | RO permeate |
| Oxidizing agents | None detectable |
| Color | ≤5 APHA |
RO permeate helps protect the EDI stack from particulates, colloidal matter, and high-molecular-weight organic substances that may foul the ion exchange media. Where an open system exists between the RO unit and the EDI system, suitable filtration should be installed immediately upstream of the EDI stack.
Feed water requirements vary according to flow rate, temperature, operating mode, and product water quality targets. Use the Winflows® Design Simulator or consult a Veolia sales representative to confirm suitability for your application.
Quality You Can Count On
The E-Cell™ EDI MK-5 Stack is manufactured in facilities certified to ISO 9001 and ISO 14001 standards.
Certifications and compliance
CE marked
RoHS compliant
CSA marked
EAC marked
UKCA certified
Halal certified by IFANCA®
For additional confidence during system design, performance projections and available guarantees can be evaluated using the Winflows® Design Simulator or through a Veolia sales representative.
Make Ultrapure Water Simpler
The E-Cell™ EDI MK-5 Stack helps industrial operators achieve consistent ultrapure water quality while reducing chemical requirements, simplifying maintenance, and supporting more efficient plant operation.
Whether you are manufacturing semiconductors, producing solar panels, operating high-pressure boilers, or scaling green hydrogen production, the MK-5 provides a reliable foundation for your ultrapure water system.
Talk to an EDI Specialist
Contact our water treatment experts to discuss:
Your product water quality targets
Feed water suitability
Required flow rate and recovery
System configuration and operating conditions
Available performance guarantees
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