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The ultrafiltration membranes are being increasingly used in the industrial and municipal sector, mainly because it is a robust treatmentwhich does not require continuous use of chemical products, and has a very high performance versus conventional treatments in the removal of suspended solids, reduction of SDI value and pathogens such as bacteria and viruses.
It is essential to protect the membranes by pre-filtration, since if particles larger than 100-200 microns enter the membranes, the useful life of the membranes is reduced and a greater number of chemical cleanings are necessary, increasing the cost of operation and maintenance of the installation.
The need for integrity testing of UF membranes (bubble test) is minimized, increasing system productivity and system lifetime.
Significant savings in operation and maintenance costs, with less need for personnel, chemicals and energy.
The investment cost is reduced, providing the following advantages in system design.
– Larger ultrafiltrate surface area available, with lower transmembrane pressure.
– Higher productivity and longer UF membrane life.
– Increased efficiency in air scavenging, with better UF membrane recovery in each CEP cleaning.
– Lower ΔP throughout the ultrafiltration module, optimizing the energy efficiency of the system.
Protection against irreversible plugging of the hollow fiber entry hole.
Protection of the hollow fiber against mechanical damage and breakage.
