deionised / demineralised water

industrial and commercial demineralised water

OUR ENERGY-EFFICIENT REVERSE OSMOSIS WATER DESALINATION SYSTEMS DELIVER THE MAXIMUM TREATED WATER-FLOW WITH THE MINIMUM POWER CONSUMPTION

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Watercore demineralised water systems, based on reverse osmosis (RO) plus electrodeionization (EDI) are capable of delivering consistent ultrapure water for commercial and industrial application with very little maintenance compared to traditional resin demineralisation processes.

1. Watercore water demineralisation systems

Watercore demineralisation systems are designed to be part of commercial or industrial ultrapure quality water systems, delivering an average conductivity of 10-17 Megohm.cm.

Ultrapure water is water that has been purified in a way that not only suspended particles have been filtered but also any dissolved component has also been removed. This way demineralised water only contains H20 molecules, hence ultrapure water conductivity is about 0,055 uS/cm or 18,2 MOhm.

A typical water demineralisation system will contain pre-treatment, reverse osmosis (RO), electrodeionization (EDI) and an ultrapure water tank. Polishing, UV disinfection and a recirculation  system can be included as options.

Watercore water purification method delivers the highest purity and is different to other systems in the market as the last purification stage is based on EDI technology. EDI is more effective and cost efficient method than distillation or ion exchange purification and results offer a more consistent demineralised water,

The whole system will typically be enclosed and will include PLC monitoring and control.

2. Benefits of Watercore demineralised water systems

Watercore water demineralisation systems possess many benefits over tradicional ion exchange systems:

  • Systems are compact and require smaller footprint
  • Consistent ultrapure water quality
  • Low energy consumption
  • No/little chemical dosing is required
  • Environmentally friendly 
 
Dissolved salts can be removed continuously from a feed water source using a DC electrical potential. The result is high-quality pure water of multi-MΩ.cm resistivity, which can be produced at flow rates compatible with different industries such as labs, boiler feedwater or semiconductors manufacturing.

3. contaminants to be removed before the demineralised water process

Hardness can cause scaling in both, the RO and EDI components. Minimising Calcium and Magnesium concentration in the source water will extend the time between services.

Organic compounds (TOC) are adsorbed by reverse osmosis membranes and EDI surfaces. This generates fouling of the active parts of both systems reducing their efficiency.

Suspended solids (TSS) and colloids are responsible for membranes and EDI fouling. Fouling  increases the pressure drop across the modules and reduces the whole system efficiency.

Iron and active metals reduce the capacity of the resins and membranes, even in sub-ppm concentrations.

Chlorine and other oxidising agents attack the RO membranes and the EDI surfaces resulting in reduced capacity.

4. Standard and optional features in our water demineralisers

Features & Options Standard Option
25μm cartridge filtration
Standard
High pressure pump
Standard
Low pressure pump
Optional
Stainless Steel 316 piping
Standard
Auto-flushing
Standard
Antiscalant dosing system
Standard
Chlorine Sterlization (pretreatment)
Optional
Iron, Aluminium, Manganese removal (pretreatment)
Optional
Turbidity removal (pretreatment)
Optional
Skid mounted
Standard
Containerised
Optional
VFD for high pressure pump
Optional
Energy-Saving Polyamide Membranes
Standard

5. Feed water requirements for water demineralisers

Qualified Feed Water Quality*(2)
Total dissolved solids (TDS)
< 6000 ppm
PH value
2-11
Iron
< 0.05 ppm
Aluminium
< 0.05 ppm
Manganese
< 0.05 ppm
Free Chlorine
0 ppm
Oil and grease
0 ppm
Turbidity
< 1 NTU
(TOC) Total Organic Carbon
< 2 ppm
*(2) higher values of any of these parameters will require a pre-treatment. Contact us for a personalised solutions

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