Demineralization (DM) Plants
Complete Ion Removal for Ultra-Pure Applications
Advanced ion exchange systems providing comprehensive mineral removal for pharmaceutical, power generation, and electronics manufacturing applications.
What It Does & How It Works
Demineralization plants utilise strong acid cation (SAC) and strong base anion (SBA) exchange resins in separate or mixed-bed configurations to remove virtually all dissolved salts and minerals from water. The process begins with cation exchange, where positively charged ions like calcium, magnesium, and sodium are replaced with hydrogen ions. Subsequently, anion exchange removes negatively charged ions such as chlorides, sulfates, and bicarbonates, replacing them with hydroxide ions. The hydrogen and hydroxide ions combine to form pure water, achieving conductivity levels below 1 µS/cm. Mixed-bed systems combine both resin types in a single vessel, providing superior water quality with resistivity exceeding 10 megohm-cm. Regeneration processes using hydrochloric acid and sodium hydroxide restore resin capacity, with automated systems optimising chemical usage and minimising waste generation. Advanced monitoring systems track conductivity, pH, and resin exhaustion to optimise regeneration timing and ensure consistent water quality.
Benefits & Applications
Key Benefits
Complete Demineralisation
Achieves conductivity levels below 1 µS/cm, removing virtually all dissolved salts and minerals for applications requiring ultra-pure water quality and precise chemical composition control
Flexible System Design
Available in separate bed or mixed-bed configurations to match specific water quality requirements and operational preferences, with scalable capacity for varying demand
Proven Technology
Time-tested ion exchange principles with decades of successful operation in critical applications, providing reliable performance and predictable operating costs
Application Areas
Power Generation
Boiler makeup water for high-pressure steam systems requiring ultra-low conductivity to prevent corrosion and scaling in turbines and heat exchangers
Electronics Manufacturing
Ultra-pure water for semiconductor fabrication and PCB manufacturing where trace minerals affect product yield and performance
Pharmaceutical Industry
Water for injection (WFI) and cleaning applications where ionic contamination affects product purity and regulatory compliance
Chemical Processing
Process water for reactions sensitive to ionic interference and applications requiring precise pH control and chemical balance