Ultrafiltration (UF) is a membrane process engineered to effectively remove suspended solids, colloidal matter, high molecular weight substances, and bacteria and viruses from various feed water sources. UF membranes can achieve a low and consistent silt density index (SDI) and are often used as pretreatment for reverse osmosis using surface water, seawater and biologically treated wastewater as a feed source.
QUA’s Q-SEP® UF membranes integrate high-strength, hollow fibers that offer unparalleled performance without the risk of fiber breaks. These cutting-edge membranes are available in inside-out and outside-in flow configurations, both of which exhibit exceptional resistance to fouling. These hollow fiber membranes operate under a pressurized flow configuration for superior performance.
The manufacturing process results in uniform pore size distribution on the membrane surface, resulting in consistently lower filtrate SDI.
The manufacturing process leads to high mechanical strength and the ability to address high-turbidity wastewater.
Q-SEP's high porosity membranes allow you to operate at a higher flux or lower TMP to reduce capital or operating expenditure.
QUA’s Q-SEP hollow fiber ultrafiltration membranes incorporate high-strength, hollow fibers that deliver superior performance without the risk of fiber breaks. Q-SEP membranes are available in PES inside-out and PVDF outside-in flow configurations, allowing customers to select a configuration based on their system requirements.
Q-SEP modules contain an advanced ultrafiltration membrane prepared by an innovative patented Cloud Point Precipitation method that ensures a uniform pore size distribution, ultrathin membrane separation layer, and high membrane pore density. As a result, the product water quality from the Q-SEP™ modules is significantly better than the quality from conventional ultrafiltration membrane modules at a very low transmembrane pressure.
QUA’s Q-SEP membranes are constructed by two different methods: a patented cloud point precipitation method for the inside-out modules and QUA’s innovative modified thermally induced phase separation (TIPS) method for the outside-in modules.
The Q-SEP inside-out modules contain an advanced UF fiber made from a modified polyether sulfone (PES) material. The fiber is prepared by a patented cloud point precipitation method that ensures a very uniform pore size distribution and high pore density in the membrane.
As a result, the product water quality from the Q-SEP modules is significantly better than that of conventional UF modules at very low operating pressure. The membranes are available with 0.8 mm ID fibers, suitable for feedwater turbidity up to 30 NTU.
Download the Q-SEP Inside-Out Datasheet
The Q-SEP outside-in hollow fiber ultrafiltration modules contain polyvinylidene fluoride PVDF membranes manufactured by QUA’s innovative modified thermally induced phase separation (TIPS) method.
The membrane has high mechanical strength, high chemical and chlorine tolerance, and the ability to handle high-feed turbidity with various applications. The membranes are available with 1.25 mm (0.05 inch) OD fibers to treat feed water with high turbidity up to 300 NTU.
Download the Q-SEP Outside-In Datasheet
QUA is a pioneering innovator of advanced membrane technologies designed to address the most challenging water treatment applications. Headquartered in the United States, QUA is committed to ongoing innovation, leveraging its deep roots in research and development and the expertise of highly experienced global team.
QUA’s diverse product portfolio includes FEDI® fractional electrodeionization, Q-SEP® hollow fiber ultrafiltration membranes, CeraQ™ ceramic membranes, and EnviQ® flat sheet and hollow fiber submerged ultrafiltration membranes.
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