Containerized Electro­deionization for High-Pressure Boiler Feed

Overview

Valleyview Generation Station recently contracted with WesTech to replace its portable mixed-bed ion exchange demineralization systems with continuous electrodeionization (EDI) technology. To meet this gas-fired powerplant’s requirements, we designed a containerized system with two independently operated EDI trains. Both trains reside in a single, insulated high-cube container with HVAC and lighting. All systems controls were factory tested, pre-assembled, and pre-wired.

The containerized system requires only one power feed, with a power distribution panel located inside to service the EDI trains and the associated equipment. Permeate from the plant’s existing double-pass reverse osmosis (RO) system feeds the EDI system via a common container feed header, which distributes the permeate to one or both EDI skids, depending on the required demineralized-water capacity.

Highlights

• The containerized design includes two electrodeionization trains in a single container.
• The system requires no chemical or off-site regeneration.
• Only minimal on-site installation labor was required.