Membrane Dow 4021/4040/8040
Type | Model | Performance | Structure Parameter | |||
---|---|---|---|---|---|---|
Stabilized Salt Rejection % | Permeate Flow Rate gpd(m3/d) | Effective membrane area /ft2 | Flow pathDia/mil | Inner pipe Dia/mm | ||
Model | BW-4021 | 99.4 | 800 (3.0) | 33 | 31 | 19.0 |
BW-4040 | 99.5 | 2400 (9.1) | 78 (7.2) | 34 | 19 | |
BW-8040 | 99.5 | 10500(40.0) | 400(37.0) | 28 | 28.7 | |
Testing conditions | Testing Pressure | 225psi(1.55MPa) | ||||
Temperature of testing | 25ºC | |||||
Testing Concentration (NaCl) | 2000 mg/L | |||||
pH Value of testing | 7.5 | |||||
Recovery of single membrane element | 20% | |||||
Operation limits and conditions | Max. Working Pressure | 600 psi (4.14 MPa) | ||||
Max. Feed water Flow | 75 gpm (17 m3/h) (8040) | |||||
16 gpm (3.6 m3/h) (4040) | ||||||
Max inflow temperature | 45ºC | |||||
Max flow SDI15 | 5 | |||||
Residual Chlorine Concentration of feed water | <0.1 mg/L | |||||
pH range of Feed water during Continuous Operation | 2~11 | |||||
pH range of feed water during chemical cleaning | 1~13 | |||||
Max, Pressure Drop of Single membrane element | 15 psi(0.1 MPa) |