Convention teaches that ZLD requires energy-intensive boiling to produce solids. Our engineers recently broke that convention and helped a mining client achieve solid salt production in a novel membrane-chiller hybrid plant using UHP-RO.
Zero Liquid Discharge (ZLD) and Minimal Liquid Discharge (MLD) Become Lower Cost Through Reverse Osmosis Innovation
Saltworks is pleased to announce that recent advancements in reverse osmosis technology are now commercially available. Malcolm Man of Saltworks notes “we are changing the cost equation for brine management and minimal liquid discharge. In the MLD and near ZLD space, advanced reverse osmosis can now do two things previously thought unattainable:
- Reduce conventional RO brine volumes by 50%, achieving brine concentrations of 130,000 to 150,000 mg/L TDS with spiral wound RO membranes.
- Treat industrial and produced waters with high organics and solvents, while maintaining membrane integrity.
Throughout 2019, Saltworks has been working with industrial customers and a leading RO membrane supplier to refine and thoroughly test the technology. It has now been demonstrated through repeated successful pilots in mine water management, cooling tower blowdown, brackish water desalination, oil & gas produced water, and industrial wastewater treatment. A cooling tower blowdown treatment case study was recently published by Saltworks.
The advanced RO accomplishments involve the marriage of specialized RO membranes and process-control innovations. An exciting partnership in this regard will be announced in the future. Interested readers can learn more about the technologies below or contact Saltworks.
Saltworks Technologies is a leader in the development and delivery of solutions for industrial wastewater treatment and desalination. Founded in 2008, the Company offers thermal and membrane systems for brine concentration, zero liquid discharge, and advanced separations. By working with customers to understand their unique challenges and focusing on continuous innovation, Saltworks’ solutions provide best-in-class performance and reliability on challenging waters. From its headquarters in Richmond, BC, Canada, Saltworks designs, builds and operates full-scale treatment plants and offers comprehensive offsite and onsite testing services with its fleet of mobile pilots.
In the latest episode of The Water Values podcast, host Dave McGimpsey interviews Saltworks CEO Ben Sparrow about zero liquid discharge (ZLD), the range of technologies involved in achieving ZLD and how Saltworks helps companies achieve their treatment goals.
Reverse osmosis-based brine concentrators are reaching new performance levels not seen before. Saltworks is pleased to report that a substantial pilot plant is currently demonstrating 99% freshwater recovery on cooling tower blowdown (CTB).