SnowPure’s ExcellPureRO membrane elements are uniquely designed for high rejection of silica (SiO2). Achieving low silica in the RO permeate is important for many applications, including electrodeionization (EDI).

When silica feedwater to an ultrapure water system is high there are 2 challenges:

• Scaling on the RO and even the EDI
• Failure to achieve low ppb levels of silica in the ultrapure water

Three factors for successfully operating an RO-EDI ultrapure water system with high silica feedwater:

• Use of high-silica-rejection RO membranes, such as ExcellPureRO
• Use of CO₂ removal technology, such as 3M Liqui-Cel GTM
• Use of premium silica antiscalant, such as Avista Vitec^® 4000