About Demineralisation Plant
What is Demineralisation
Demineralisation is the process of removing all dissolved mineral salts — calcium, magnesium, sodium, chlorides, sulphates, silica, and other ionic impurities — from water through ion exchange resin beds. Unlike softening, which only removes hardness, demineralisation produces water that is virtually free of all dissolved solids, making it suitable for the most demanding industrial and process applications.
Crearch Envirotech designs complete demineralisation systems — from single-pass two-bed configurations to multi-stage mixed bed polishing trains — engineered to your exact feed water TDS profile and output purity requirement, whether you need water at 10 µS/cm or ultra-pure output below 0.1 µS/cm for critical process use.
Cation & Anion Exchange Process
The demineralisation process operates in two sequential stages — cation exchange, where positively charged ions such as calcium, magnesium, sodium, and potassium are replaced with hydrogen ions; followed by anion exchange, where negatively charged ions such as chlorides, sulphates, nitrates, and silica are replaced with hydroxyl ions. The result is chemically pure H₂O with virtually no dissolved ionic load.
Crearch Envirotech engineers precisely sequenced cation-anion exchange systems with correctly sized vessel diameters, resin bed depths, and service flow rates — ensuring complete ionic removal at every point in the service cycle, not just at startup, and delivering consistent output quality right through to resin exhaustion.
Ion Exchange Demineralisation
Ion exchange is the core technology behind every demineralisation plant — and its performance depends entirely on the quality of resin selection, vessel sizing, and regeneration cycle design. Undersized or poorly configured ion exchange systems deliver inconsistent output quality, consume excessive acid and caustic during regeneration, and fail prematurely under variable feed water conditions.
Crearch Envirotech engineers precision-designed ion exchange DM systems — from two-bed and mixed-bed configurations to fully automatic multi-column trains — calibrated to your exact feed water TDS, flow rate, and output purity requirement, ensuring ultra-low conductivity output consistently across every operating cycle.
High Purity Water for Process Industries
Power plants, pharmaceuticals, electronics manufacturing, and steam generation systems demand water of exceptional purity — where even trace levels of dissolved salts, silica, or hardness can cause catastrophic scale buildup, corrosion of heat exchangers, turbine blade damage, and batch contamination that costs crores to remediate.
Crearch Envirotech delivers high purity DM water systems engineered to achieve conductivity below 0.1 µS/cm and silica levels below detectable limits — integrating degassers, polishing mixed beds, and online quality monitoring to guarantee that your boilers, reactors, and process lines receive water that is truly mineral-free, every single batch.
Why Choose Crearch for Demineralisation Plant
Precision Resin Selection
We select and size ion exchange resins based on your exact feed water chemistry — ensuring maximum exchange capacity, longer resin life, and lower regeneration chemical consumption per cycle.
Consistent Ultra-Low Conductivity
Our DM systems are engineered to deliver output conductivity below 1 µS/cm consistently — with mixed bed polishers achieving sub-0.1 µS/cm for the most demanding process and power applications.
Fully Automatic Regeneration
Our PLC-controlled auto-regeneration systems initiate resin regeneration based on conductivity breakthrough — minimising operator intervention, reducing chemical waste, and ensuring uninterrupted DM water supply.
Boiler & Steam System Ready
Every DM plant we design is sized and configured to meet boiler feed water standards — protecting your steam generation assets from scale, corrosion, and carryover, and extending equipment operational life.
Typical Applications
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