Key Features
Anti-Fouling, High-Flux Membrane
Fouling resistant Forward Osmosis process isolates traditional Reverse Osmosis membranes from wastewater
Minimal pre-filtration required
Our open-channel FO membranes can handle wastewater with suspended solids and dissolved organic matter.
Flexible and Tunable
Our systems are highly tunable to handle variations in wastewater composition and flow rates while maintaining high permeate recovery and efficiency.
Highly Automated
Our systems are fully automated so there is little operator attention required. They are also remotely accessible and we provide data logging solutions through our online DO Metrics platform.
How it Works
Step 1: Forward Osmosis
Raw, screened, or filtered liquid is first passed through the Forward Osmosis (FO) membrane stacks, where 50-95% of the water is removed by passing through the membrane and into a salt water solution.The concentrate exits the FO system and can be collected in a tank nearby.
Step 2: Reverse Osmosis
The salt water is then processed by RO membranes to generate clean water and brine. The brine is passed back through the FO system continuously.
Step 3: Clean Water Discharge
Clean water is continuously discharged from the RO system and can be stored onsite for reuse or discharged.
Ideal for: Brewery Wastewater, Ultrafiltered Manure, Leachates, Low-TSS Wastewaters
How does FO Compare to RO alone?
Process Dirtier Water
With our open channel FO, anti-fouling membrane, and low pressure system, the FO can handle much dirtier water than a traditional RO. This reduces the need for pre-filtration and allows concentration of liquids with high levels of dissolved organic matter.
Achieve higher permeate recovery
Using FO-RO allows increased permeate recovery and smaller volumes of concentrate that require additional processing or disposal.
Produce Cleaner Water
FO-RO makes cleaner final effluent compared to RO alone since water goes through both the FO and RO membrane, not just one RO membrane. Water can be used as boiler feed water, animal drinking water, or directly discharged.
Extend Membrane Life
Because wastewater or process liquid rich in organics does not contact the RO membranes, cleaning requirements are significantly diminished. Fewer cleanings means extended membrane life and reduced downtime.
Commercial Deployments
Majestic Crossing Dairy
5-stage continuous system
Recovers clean water for cows to drink from ultrafiltered dairy manure
Dairy Manure Filtration System
3-stage continuous system
Recovers clean water for discharge from ultrafiltered dairy manure
Wilderness Trail Distillery
5-stage continuous system
Recovers clean water for reuse and discharge from ultrafiltered stillage
Dairy Manure Filtration System
3-stage continuous system
Recovers clean water for cows to drink from ultrafiltered dairy manure
Food Waste Digestate Filtration System
5-stage continuous system
Recovers clean water for discharge from ultrafiltered food waste digestate to produce organic fertilizers and reduce disposal costs
Brewery Wastewater Filtration System
1-stage repeat-batch system
Recovers clean water for discharge from screened brewery wastewatery
FO Pilot Testing
Have manure, digestate, leachate, or another wastewater?
Let us bring our demo skids to your facility or ship your material to us for a detailed evaluation of our technology. We’ll collect the data we need to accurately size a system for your full flow along with analytical data, pictures, and samples of the FO permeate and FO concentrate.
Please give us a call to schedule your trial today!