By integrating an ion exchange process before the RO membrane, di-valent and tri-valent cations like calcium, magnesium and heavy metals can be removed. This means reduced scaling of positively charged ions on RO membranes, which improves demineralised water recovery by to 99%, while reducing total brine volumes as well as membrane costs.
The more efficient water performance, maximum environmental compliance and reduced sludge handling and disposal costs.
This continuous ion exchange technology treats a wide range of feedwaters, removing both suspended particles and dissolved contaminants. Using HiROx® also means that mineral beneficiation processes can be simplified and recoveries for and wastewater applications increased.
In the mining sector, HiROx® is used to:
– remove salinity
– remove metal ions, TSS, TDS and other contaminants
– treat water & brine with minimum liquid discharge
HiROx® is also suitable for use in other industries. Two of those industries most closely related to mining for their treatment requirements are:
The integration of CIF® and RO, where hardness and other scale forming ions are removed prior to RO taking place, is how HiROx® achieves its above 95% recovery. The brine from the RO is used to regenerate CIF®’s ion exchange resin, providing a chemical free pre-treatment.
Scaling components that block RO membranes in a standalone reverse osmosis plant reduce plant operation to only about 70% recovery. By adding CIF® to the equation, a pre-treatment that uses ion exchange to remove the scaling components is enabled. This translates to an approximate 97% recovery treatment of water going on to the reverse osmosis treatment.