Purification of Effluents via Membrane Separation

Benefit from an innovative process to purify your water or wastewater with triple benefits.

Replace conventional physico-chemical processes (adsorption, precipitation, ion exchange), often costly and complex
Efficiently separate dissolved species of different sizes (e.g., Na⁺ and UO₂²⁺)
Reduce operating costs associated with successive reagent-intensive and heavy process steps
Implement a reliable technology for purification, recycling, or drinking water production
Access adaptable solutions, from laboratory scale up to on-site pilot testing

Adopt an innovative membrane technology based on semi-permeable membranes.
Separate your effluents according to species size: from microfiltration (hundreds of µm) to ions via reverse osmosis (2–3 Å).
Develop your studies from laboratory scale up to industrial pilot.
Use a mobile pilot housed in a 20-foot container to test directly on site.
Purify your effluents while reducing reagent consumption and simplifying your processes.

Mobile pilot

100 mL to 1m3

Wide separation range: from particles (µm) down to ions (Å)
Varied test formats: from 100 mL to 1 m³
Mobile pilot deployable on site (20-foot container)
Removal rates >99.5% for uranium and radium (two nanofiltration membranes)
Permeate quality below WHO guidelines: <30 µg/L uranium
Results confirmed under real conditions: several m³ of mine drainage water treated
Reduced reagent consumption and by-product recovery
Applied studies in mining:

Katco (Kazakhstan): recovery of 30–60% of free acidity in the permeate and 70–98% of uranium
Trekkopje (Namibia): treatment of alkaline eluates, separation of uranium/sodium bicarbonate with DOW NF270 membrane

Challenges