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
/gpd（m3/d）
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
225psi（1.55 MPa）
Temperature of testing
25 ℃
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. Feedwater Flow
75 gpm（17 m3/h）（8040）
16 gpm（3.6 m3/h）（4040）
Max inflow temperature
45℃
Max flow SDI15
5
Residual Chlorine Concentration of feed water
＜0.1 mg/L
pH range of Feed water durng Continuous Operation
3～10
pH range of feed water during chemical cleaning
2～12
Max, Pressure Drop of Single membrane element
15 psi（0.1 MPa）
