Custom Stacks

Tailored to Your Feedwater and Objectives
Custom Stacking

We design and manufacture customized ion-exchange membrane stacks for your feedwater characteristics, treatment objectives and operating conditions.

We assess membrane type and selectivity, active area, cell pairs, spacer structure and flow channels to provide stacks suited to ED, BPED, EDM and EDI processes.

Ion-exchange membrane stack configuration

From Pilot Testing to Commercial Scale

Pilot Scale Stack

Stack specifications and operating conditions are designed for process validation and demonstration using actual feedwater.

Commercial Scale Stack

Demonstration data supports scale-up to commercial stacks and systems suited to the required capacity and site conditions.

Core Capabilities

Customized Stack Design

We optimize membrane type, cell structure, active area and cell pairs for treatment capacity, feed composition and target water quality.

Flow and spacer engineering equipment and engineering work

Flow & Spacer Engineering

We design spacers and internal flow channels with flow distribution, pressure loss, concentration polarization and scaling in mind.

Electrical and operating optimization equipment and engineering work

Electrical & Operating Optimization

We optimize current density, voltage, flow, temperature and concentration ratio to achieve stable process operation.

Applicable Technologies

ED | Electrodialysis

Desalination, concentration and selective ion separation

BPED | Bipolar Electrodialysis

Conversion of salts into acids and bases, and waste salt recovery

EDM | Electrodialysis Metathesis

Salt conversion and resource recovery through ion recombination

EDI | Electrodeionization

High-purity and ultrapure water production

Tailored to Your Feedwater and ObjectivesCustom Stacking