Collaboration with Convergence for membrane filtration
For the membrane filtration a ‘Convergence inspector Colossus’can be used. This is a fully automated customized lab scale system for nano filtration which makes it interesting. Felix Broens (Chief Technology Officer of Convergence Industry B.V.) explains how this system works:
”The nanofiltration system is fed with water in which a phosphatefree anti scalant is dosed. Using a high pressure pump the system is pressurized, causing a part of the water to pass to the membrane (permeate). The part of the water that cannot pass through the membrane (retentate) is led back to where the water has been fed. An extra pump in the recirculation conduit causes a higher velocity across the surface of the membrane, which reduces pollution on the membrane itself. The permeate can eventually be used as clean water for different applications.”
“The anti scalant is used to prevent scaling on the membrane, by forming a complex of metal-containing ions, which keeps them in the retentate stream so that they can be led out of the system. Because of using a phosphate free and biodegradable anti scalant, it doesn’t have any harmful effects on the environment.”