Power Plant Chemical Water Treatment EDI Module 10 M3/h High Ion Selectivity Demineralized Water System

Product Overview

This DUBHE CEDI module is specified for chemical water treatment in thermal and combined-cycle power plants, where boiler make-up, closed cooling water and demineralised water circuits must be kept free of dissolved ions. Installed downstream of a reverse osmosis stage, the module removes residual conductivity, silica and carbon dioxide without the chemical regeneration, acid and caustic storage that conventional mixed-bed ion exchange demands.

The electrodeionization stack continuously regenerates its own ion exchange resin by direct current, so power plant operators obtain a stable, chemical-free polishing step with a permeate quality that stays within boiler feedwater limits regardless of load swings.

Why Power Plants Choose This Module

• Wide pH range chemical cleaning tolerance, high reliability and long life design.
• CPVC runner plate frame with high weather resistance, built for outdoor and containerised plants.
• Double O-ring sealing with double injection moulding prevents internal and external leakage.
• 2 in 2 out port design, a direct replacement for conventional ordinary runner stacks.
• Specially developed ion exchange membrane with extremely high ion selectivity in a compact volume.
• Designed service life of more than 80,000 hours with 90-95% water recovery.
• Continuous operation without regeneration downtime, acid or caustic handling.
• Stable product water quality during load following and plant start-up cycles.

Typical Power Plant Water Train

• Raw water intake → pre-treatment & filtration → reverse osmosis → CEDI polishing → boiler make-up / demineralised water storage.
• Condensate polishing and closed cooling water make-up circuits.
• Auxiliary systems: laboratory ultrapure water, analyser sampling and sampling racks.

Technical Specifications

(General industrial desalted water, high purity water)

Selection Parameters

Export Markets & Delivery

DUBHE CEDI modules are exported regularly to Latin America, South America and South Africa, including Brazil, Chile, Peru, Colombia, Mexico, Argentina and the Republic of South Africa. Standard export packing is a seaworthy wooden case with shock-proof internal support; documents, wiring diagrams and commissioning guidance are supplied with every shipment.

• Seaworthy wooden case packing, suitable for long ocean freight and inland transport.
• Delivery time 15-25 working days after order confirmation.
• Payment terms: T/T, L/C, Western Union.
• Rated flow selection from 0.5 M3/h to 8 M3/h standard, up to 10 M3/h maximum per module.