Veolia Water Technologies & Solutions

E-Cell* Electrodeionization (EDI) Stacks

Modules for ultrapure and high purity water systems

E-Cell EDI stacks are the core component of a fully engineered system to produce ultrapure and high purity water. Veolia offers several E-Cell EDI stacks with differing capabilities for use in many industries including power generation, semiconductor fabrication, solar panel production, green hydrogen, pharmaceutical manufacturing, and at many other heavy industrial sites. E-Cell EDI stacks manufactured by Veolia are commonly used by original equipment manufacturers (OEMs) building EDI systems in various applications and capacities with Veolia's technical guidance. Veolia also offers E-Cell EDI stacks to the market through other channels, including direct to end-users for replacement or retrofit to the EDI stacks in their existing systems.

Overview

The E-Cell electrodeionization (EDI) portfolio is an established Veolia product offering with time-tested manufacturing practices and a reputation for providing premium performance including both the highest levels of product water quality and the lowest energy consumption.

Veolia offers the following E-Cell EDI stacks with recommendations on the typical new-build application.

 

E-Cell EDI Stack

Nominal Stack Flow Rate

Typical New-Build Applications


MK-9

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

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

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 Electrodeionization (EDI) Stack Benefits vs 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.

Additional E-Cell EDI stack benefits:

  • Requires no regeneration chemicals which simplifies environmental, health and safety concerns and reduces chemical costs
  • Continuous operation minimizing the risk of breakthrough from exhausted resin and simplifies operations by eliminating the need to take a system offline for regeneration
  • 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
  • No hazardous wastewater discharge and wastes can be easily recycled without the neutralization systems needed for ion exchange

Implementing E-Cell EDI stacks will prove to be more economical than mixed bed ion exchange, offering many customers both reduced initial investment costs and decreased day-to-day operational expenses.
 

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