Sapstone Brackish Water (BW) Series RO membrane elements Advantage 1.This series of membrane element have larger effective filtration area and wider inflow path. 2.Not only does it increase the water yield, but diminish the frequency of cleaning. 3. Low energy and cost to obtain the highest quality of water. 4. Can working for 2000-3000ppm feed water. Type Model Performance Structure Parameter rejection /% permeate flux /gpdï¼m3/dï¼ Effective membrane area /ft2 Flowpath Dia /mil Inner pipe Dia /mm Model BW-8040 99.5 10000 380 31 28.7 BW-8040-400 99.5 10600 400 30 28.7 BW-8040-400/34 99.5 10600 400 34 28.7 BW-8040-440 99.5 12000 440 34 28.7 BW-4040 99.5 2400 90 31 19.0 BW-4021 99.5 900 38 31 19.0 Testing conditions Testing Pressure 225psiï¼1.55 MPaï¼ Temperature of testing 25 â Testing Concentrationï¼NaClï¼ 2000 mg/L pH Value of testing 7.5 Recovery of single membrane element 20% Operation limits and conditions Max. Working Pressure 600 psiï¼4.14 MPaï¼ Max. Feedwater Flow 75 gpmï¼17 m3/hï¼ï¼8040ï¼ 16 gpmï¼3.6 m3/hï¼ï¼4040ï¼ Max inflow temperature 45â Max flow SDI15 5 Residual Chlorine Concentration of feed water ï¼0.1 mg/L pH range of Feed water durng Continuous Operation 3ï½10 pH range of feed water during chemical cleaning 2ï½12 Max, Pressure Drop of Single membrane element 15 psiï¼0.1 MPaï¼
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