644 XXXI International Mineral Processing Congress 2024 Proceedings/Washington, DC/Sep 29–Oct 3
The size of the HDS process required is 70% of the
HDS process size required in a conventional arrangement,
and does not require a gypsum stabilization process prior to
the Reverse Osmosis membranes.
This innovative technological arrangement maintains a
constant RO recovery of 70%.
In the cleaning cycles of the ultrafiltration membranes,
it is necessary to avoid contact with oxygen to avoid iron
precipitation that can foul the UF membranes.
Three cleaning procedures are required to maintain
adequate UF performance: acid, basic and bio-basic.
The RO can perform without the need of antiscalant.
During operation, a pH lower than 2.5 must be main-
tained to keep the Fe ion in an aqueous phase.
The limitation of this process is the concentration of
calcium and sulfate in the feed solution. The combination
of both could cause fouling in the Reverse Osmosis mem-
branes and reduce the treatment efficiency.
REFERENCES
Colorado School of Mines, TSF Water Management 2023.
Geochemical considerations by Bryan Moravec, PhD,
PG.
Decreto Supremo N° 004–2017-MINAM: Environmental
Quality Standards (ECA) for Water.
Jim Stefanoff 2023, https://www.linkedin.com/in/jim
-stefanoff-64677b14b/.
Sebastian Franzsen 2022, Miwatek Consultant, Next-
Generation Mine Water Treatment, https://miwatek
.mu/.
Newmont, Operations and Projects 2024, https://
operations.newmont.com/.
Pourbaix iron-water diagram, July 2020, Chemistry
and Industrial Techniques for Chemical Engineers,
Heru Susanto, https://www.researchgate.net/figure
/The-generalized-Pourbaix-diagram-for-the-iron
-water-system-at-29815-K-P-1-atm_fig4_342591248.
Richard W. Baker (2004). Membrane Technology and
Applications. Pg7,245.
The Filtration Spectrucm, Osmonic Inc, https://osmonic
srosystem.com/.
Wes Byrne (1995). Reverse Osmosis: A practical guide for
industrial users. Pg97.
APPENDIX
Video: Pilot Plant: https://youtu.be/Jd4WGLAznJQ
Figure 24. Bacterial activity, the small translucent green spheres within the red circles are motile bacteria, and this type of
bacteria was the most common in all samples the joint masses are algae
The size of the HDS process required is 70% of the
HDS process size required in a conventional arrangement,
and does not require a gypsum stabilization process prior to
the Reverse Osmosis membranes.
This innovative technological arrangement maintains a
constant RO recovery of 70%.
In the cleaning cycles of the ultrafiltration membranes,
it is necessary to avoid contact with oxygen to avoid iron
precipitation that can foul the UF membranes.
Three cleaning procedures are required to maintain
adequate UF performance: acid, basic and bio-basic.
The RO can perform without the need of antiscalant.
During operation, a pH lower than 2.5 must be main-
tained to keep the Fe ion in an aqueous phase.
The limitation of this process is the concentration of
calcium and sulfate in the feed solution. The combination
of both could cause fouling in the Reverse Osmosis mem-
branes and reduce the treatment efficiency.
REFERENCES
Colorado School of Mines, TSF Water Management 2023.
Geochemical considerations by Bryan Moravec, PhD,
PG.
Decreto Supremo N° 004–2017-MINAM: Environmental
Quality Standards (ECA) for Water.
Jim Stefanoff 2023, https://www.linkedin.com/in/jim
-stefanoff-64677b14b/.
Sebastian Franzsen 2022, Miwatek Consultant, Next-
Generation Mine Water Treatment, https://miwatek
.mu/.
Newmont, Operations and Projects 2024, https://
operations.newmont.com/.
Pourbaix iron-water diagram, July 2020, Chemistry
and Industrial Techniques for Chemical Engineers,
Heru Susanto, https://www.researchgate.net/figure
/The-generalized-Pourbaix-diagram-for-the-iron
-water-system-at-29815-K-P-1-atm_fig4_342591248.
Richard W. Baker (2004). Membrane Technology and
Applications. Pg7,245.
The Filtration Spectrucm, Osmonic Inc, https://osmonic
srosystem.com/.
Wes Byrne (1995). Reverse Osmosis: A practical guide for
industrial users. Pg97.
APPENDIX
Video: Pilot Plant: https://youtu.be/Jd4WGLAznJQ
Figure 24. Bacterial activity, the small translucent green spheres within the red circles are motile bacteria, and this type of
bacteria was the most common in all samples the joint masses are algae