DescriptionHydranautics – CPA High Rejection MembranesHydranautics membranes are used to treat a wide range of highly variable waters as either primary treatment or as pretreatment to reverse osmosis (RO) and nanofiltration (NF).Compared to conventional pretreatment, Hydranautics combine benefits of high recovery and low footprint requirement due to its optimized membrane area and novel cleaning regimes.CPA (Composite Polyamide) elements set the standard for RO membrane elements – over 600 million gallons per day of pure water are produced by CPA elements for global municipalities and industries. 4” and 8” configurations available.Advantages99.7% nominal rejectionhigh TOC, silica and hardness rejectionApplicationsdesalting of well waters – municipal drinking waterreducing TDS prior to ion exchangeboiler make-up waterultrapure water for semi-conductor manufactureSpecifications:MakeHydranauticsModel8040 CPA2Membrane TypeSpiral-wound element with Composite PolyamideMaximum Operating Temperature113°F (45°C)Maximum Operating Pressure600 psi (41 bar)Maximum Feed Flow Rate 8040 Elements75 gpm (17 m3/h)Maximum Pressure Drop15 psig (1.0 bar)pH Range, Continuous Operation2 - 11Maximum Feed Silt Density Index (SDI)SDI 5Free Chlorine Tolerance< 0.1 ppmSaltRejection %99.7 %Max. Feed water turbidity1.0 NTUFlow ratem3/d37.9Membrane Active Area ft2365