- 5×
- Less energy than evaporation
- 5–13 kWh/m³, compared with 25–60 for thermal evaporators
- 60–75%
- Lower energy and capital cost
- Compared with a thermal zero liquid discharge plant
- 70%
- Smaller plant
- Compared with a conventional thermal system
- >99%
- Of the water recovered
- Across the full membrane train
A fifth of the energy of thermal evaporation
Removing a cubic metre of water from brine takes 25–60 kWh in a thermal evaporator and 5–13 kWh on Osmosys membranes. Where an evaporator is still required, it is sized for the residue alone.
| Item | kWh per m³ of water removed |
|---|---|
| Thermal evaporation | 25–60 kWh/m³ |
| Osmosys membranes | 5–13 kWh/m³ |
Solutions
Minimum and zero liquid discharge
Eliminate liquid discharge with most of the water recovered on membranes, leaving only a small residue to crystallize.
Brine mining and resource recovery
Concentrate desalination and industrial brines until magnesium, potassium, bromine, and salts can be recovered for sale.
Lithium
Take lithium brine to product in months rather than years, with most of the water recovered.
Produced water
Cut oilfield water disposal volumes and return clean water to the operation.
King Salman Park: zero liquid discharge at municipal scale
Municipal · King Salman Park, Riyadh, Saudi Arabia
Turning 10,800 m³ a day of reject brine into irrigation water for the world’s largest urban park, with near-zero liquid discharge, from an underground plant 70% smaller than a conventional system.
- Brine treated
- 10,800m³/day
- Reject brine from the park’s effluent treatment
- Water recovery
- 82%
- Returned to the park as irrigation water
- Smaller footprint
- 70%
- Compared with a conventional system
Selected projects
From feasibility to operation
01
Feasibility
Flow, full chemistry, variability, and the treatment objective, compared with the incumbent disposal or thermal route.02
Pilot
Bench and pilot testing on site water to establish recovery, energy, pretreatment, and achievable concentration.03
Design and supply
Process design, P&IDs, and control philosophy, with supply of the membrane stages or the complete packaged system.04
Commissioning and operation
Performance testing against the design basis, operator training, and long-term operating support.
Discuss a project
Share the flow rate, water analysis, and treatment objective. Our process engineering team will follow up.