ExcellPureRO™ High Silica Rejection RO Elements
High Silica Rejection Membrane Elements (2.5″ & 4″ & 8″)
Many potable waters from surface sources contain naturally low levels of silica (4-8 ppm), but volcanic areas like Japan and Mexico and groundwater sources in the Middle East normally contain 20-100 ppm. This causes problems when purifying water. Hence, membranes with high rejection of soluble silica (SiO2) are valuable for producing ultrapure water.
Standard and low energy (LE) reverse osmosis (RO) membranes do not reject silica well, often only 97-98%. Special membranes (ExcellPureRO™) have been developed to reject silica over 99.2%.
SnowPure’s ExcellPureRO™ membranes are uniquely designed for high rejection of silica. Achieving low silica values from the RO is important for many applications, including providing feedwater for electrodeionization (EDI) systems. We have matched these SXR™ membrane elements to specific Electropure™ EDI modules.
SnowPure recommends using Avista Vitec® 4000 with ExcellPureRO™ membranes to prevent silica scaling. With Vitec® 4000, you can achieve up to 325 ppm SiO2 in the RO concentrate.