Veolia Water Technologies & Solutions

E-Cell* Electrodeionization (EDI) Stacks

Modular EDI Solutions with Performance Guarantees

E-Cell EDI stacks deliver the ultrapure and high purity water to meet your operation requirements. Veolia's comprehensive range of E-Cell EDI stacks provides the flexibility to optimize your system for maximum performance - whether you need higher flow rates, compact footprints, reduced energy consumption, or cost-competitive technology that doesn't compromise on quality. From power generation and semiconductor fabrication to pharmaceutical manufacturing and green hydrogen production. E-Cell EDI stacks power critical processes across industries where water purity is non-negotiable. Partner with Veolia directly for technical guidance on custom OEM systems, or source replacement and retrofit stacks to enhance your existing infrastructure. With E-Cell EDI technology, you gain a reliable, efficient solution that scales with your business and reduces operational costs. 

Download E-Cell* Electrodeionization (EDI) Portfolio Brochure

Overview

The E-Cell (EDI) stack portfolio is a proven Veolia product with time-tested manufacturing and a reputation for premium performance- delivering exceptional water quality with minimal energy consumption. When high purity and ultrapure water are critical, choice matters. The E-Cell EDI stack portfolio offers comprehensive configurations engineered for diverse purification needs across industries, providing the reliability and consistency required for today's most demanding high purity and ultrapure water applications. 

Explore Veolia E-Cell EDI stack's complete lineup below, with application specific recommendations to guide your selection. 

Microelectronics

Stack Name

Nominal Flow Rate

Typical New-Build Applications

MK-5D
10.0 m3/h (44.0 gpm)
  • Ultrapure water for rinsing of semiconductor chips, solar panels, and other microelectronics.
  • Demineralized boiler feed water for high pressure boilers found in power plants and other heavy industrial sites. 
  • Ultrapure water for electrolyzer green hydrogen generation. 

MK-5

5.0 m3/h (22 gpm)
  • Ultrapure water for semiconductor, flat panel display, solar photovoltaic and other microelectronics.
  • Boiler feedwater in power plants and other heavy industrial sites.

MK-3

3.4 m3/h (15 gpm)
  • Ultrapure water for semiconductor, flat panel display, solar photovoltaic and other microelectronics.
  • Boiler feedwater in power plants and other heavy industrial sites.

General Industry 

Stack Name

Nominal Flow Rate

Typical New-Build Applications

MK-9D
16.0 m3/h (70.4 gpm)
  • Demineralized boiler feed water for high pressure boilers found in power plants and other heavy industrial sites. 
  • Ultrapure water for rinsing of solar panels and other microelectronics.
  • Ultrapure water for electrolyzer green hydrogen generation. 

MK-9

8.0 m3/h (35 gpm)
  • Ultrapure water for solar photovoltaic and green hyrdrogen.
  • Boiler feedwater in power plants and other heavy industrial sites.

Pharmaceutical and Biotechnology 

Stack Name

Nominal Flow Rate

Typical New-Build Applications

MK-3PharmHT

3.4 m3/h (15 gpm)
  • High purity water compliant with United States Pharmacopeia (USP) and European Pharmacopeia (EP) standards for pharmaceutical and laboratory water injection

MK-3MiniHT

1.14 m3/h (5 gpm)
  • Pharmaceutical and laboratory purified water injection compliant with USP and EP

 

 

 

Benefits

E-Cell EDI Technology: The Smart Alternative to Mixed Bed Ion Exchange

Electrodeionization (EDI) represents a critical evolution in demineralization systems—moving from multiple sequential ion exchange vessels to efficient membrane-based technology. When integrated with reverse osmosis, E-Cell EDI systems deliver reliable production of ultrapure and high-purity water.

Key Benefits

Operational Excellence

  • Continuous operation with no downtime for regeneration
  • Eliminates risk of breakthrough from exhausted resin
  • Simplified operations with predictable, consistent water quality

Cost Savings

  • No regeneration chemicals required—reducing both chemical costs and procurement complexity
  • Lower initial investment and reduced day-to-day operational expenses
  • Smaller footprint and lower height requirements than ion exchange systems

Safety & Environmental

  • Eliminates hazardous chemical handling (acids and caustics)
  • No hazardous wastewater discharge
  • Waste streams easily recycled without neutralization systems
  • Improved environmental, health, and safety profile

E-Cell EDI technology offers a more economical solution than mixed bed ion exchange, combining lower capital costs with reduced operating expenses while delivering superior operational reliability.

E-Cell Electrodeionization (EDI) Portfolio Benefits Versus Ion Exchange

Electrodeionization is a critical part of the evolution of demineralization systems from several sequential ion exchange vessels and toward membrane-based systems. In such a flow sheet with reverse osmosis, E-Cell EDI systems can replace mixed-bed ion exchange systems and provide reliable production of ultrapure or high purity water.

Additionally:

  • EDI requires no regeneration chemicals which simplifies environmental, health and safety concerns and reduces chemical costs
  • EDI operates continuously which minimizes risk of breakthrough from exhausted resin and simplifies operations by eliminating the need to take a system offline for regeneration
  • EDI reduces facility requirements by having a smaller footprint and lower height requirement than ion exchange, particularly when including supporting equipment such as chemical dosing systems
  • EDI has no hazardous wastewater discharge and wastes can be easily recycled without the neutralization systems needed for ion exchange

For many customers and in addition to the above benefits, choosing to use E-Cell Electrodeionization (EDI) portfolios provided lower capital costs and reduced operating expenses when compared to mixed bed ion exchange.

 

Winflows Design Simulator

Winflows Design Simulator is an intuitive and user-friendly projection program that allows users to quickly design simple or complex reverse osmosis (RO), nanofiltration (NF), and electrodeionization (EDI) systems. Winflows Design Simulator provides users with access to Veolia’s spiral wound RO/NF elements, E-Cell EDI stacks, cartridge filter products as well as pre-configured NF and RO systems e.g., PROflex and SeaPRO.

Winflows Design Simulator includes functionality for adding E-Cell EDI stacks to system configurations for projections of any size. Winflows Design Simulator can be accessed here (link: https://www.watertechnologies.com/resources/winflows )

 

 

 

Case Studies

Veolia’s E-Cell EDI solutions demonstrate exceptional performance through documented customer success stories across multiple industries. Our case studies highlight specific examples where we've successfully addressed challenges and delivered measurable results. These real-world applications validate the versatility and effectiveness of our advanced E-Cell EDI solutions.
 


Chemical Processing

E-Cell Electrodeionization (EDI) Stacks chosen over ion exchange for expansion

Download Case Study - Petrochemical Company
 

Photovoltaics & Microelectronics

On the wave of Carbon Neutrality, Veolia offers tailor-made ultrapure water system to boost photovoltaic giant

Download Case Study - Chinese solar photovoltaic industry
 

Boiler Feedwater

Shandong Power Plant retrofits with E-Cell EDI stacks to treat boiler feedwater

Download Case Study - Shandong Power Plant
 


 

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