Prepared by Usama Ahmed H. S. Ezzeghni Department of Water Researches, Nuclear Research Center, Tripoli, Libya.
[email protected], Tel: +218923046368 April, 2018
Size (mm) Diam.* Length
Part Number
BW30-440i LE-400 LE-440i HRLE-440i BW30HR-440i BW30-400 XLE-440
1,016*1,016 1,016*1,016 1,016*1,016 1,016*1,016 1,016*1,016 1,016*1,016 1,016*1,016
Applied Test Pressure (bar) 15.5 10.3 10.3 10.3 15.5 15.5 8.6
Active area (m2)
Permeate flow rate (m3/d)
Stabilized Salt Rejection (%)
41 41 41 41 41 41 41
43 43 48 48 48 48 53
99.5 99.3 99.3 99.5 99.7 99.5 99.0
Historical BWRO membrane Development 99.5
99.0 53
43
99.5
41
Permeate flow rate
48
99.3
99.0
99.7 48
48
99.3
43
Steve Alt , Reverse Osmosis (RO) and RO Energy Recovery Devices, CH2M HILL, November 2014.
ROSA system analysis
Developed by DOW FILMTEC™
WRF-08-14 evaluation tool
Developed by WateReuse Research Foundation
Case No. Element Type
1
2
3
BW30-440i
LE-400
LE-440i
4
5
6
7
8
HRLE-440i BW30HR-440i BW30-400 BW30-440i+LE- XLE-440
BW30HR440i+HRLE-440i
440i Av. Osmotic Pressure bar
9
6.10
6.08
5.84
6.10
6.11
6.11
6.09
5.98
6.11
5339.83
5339.83
5339.83
5339.83
5339.83
5339.83
5339.83
5339.83
5339.83
Feed Temperature oC
25.0
25.0
25.0
25.0
25.0
25.0
25.0
25.0
25.0
Average NDP bar
9.44
6.58
6.58
5.81
8.56
10.59
8.11
4.88
7.65
Feed Pressure bar
17.82
15.22
14.28
14.33
16.99
19.20
16.34
13.11
15.97
Feed Flow m³/d
1538.46
1538.46
1538.46
1538.46
16.99
1538.46
1538.46
1538.46
1538.46
Permeate Flow m³/d
999.92
999.87
1000.05
1000.05
999.89
999.93
999.82
999.91
999.95
Permeate TDS mg/l
79.81
118.88
130.44
78.58
61.63
72.82
102.01
279.01
65.19
Specific Energy kWh/ m³
0.95
0.81
0.76
0.77
0.91
1.03
0.87
0.70
0.85
Power kW
39.68
33.88
31.79
31.90
37.82
42.74
36.38
29.19
35.55
26.69
24.27
24.27
24.27
26.70
24.27
24.27
24.27
Yes
No
No
No
Yes
No
Feed TDS mg/l
Average Flux lmh Design warnings
No
Yes
Case No. Model Manufacturer Application Application Pump Flow Pump Pressure (kPa) Turbine Flow (L/s) Turbine Pressure (kPa) Membrane Feed Pressure (kPa) Booster Pressure (kPa) Total Power (kW) Turbocharger Efficiency Max Working Pressure (kPa) Min Pump –Side Flow (L/s) Max Pump –Side Flow (L/s) Min Turbine –Side Flow (L/s) Max Turbine –Side Flow (L/s) Min Concentrate Pressure (kPa) Cost
1 LPT-250 ERI Prestage BWRO 17.81 1311.36 6.23 972.97 1448.84 137.48 -7.38 45% 2758 9.5 23.7 4.7 11.8 103.425 15,000
2 HPB60 Fedco Prestage BWRO/ SWRO 17.81 1238.82 6.23 972.97 1448.84 210.0 -9.26 69% 8274 12.6 20.8 6.9 16.7 103.425 15,191
3 LPT-125 ERI Inter-stage BWRO 2929.11 988.21 6.23 1030.17 1248.68 260.47 -7.98 53% 2758 4.4 11.7 2.2 5.8 103.425 11,000
4 HPB40 Fedco Inter-stage BWRO/ SWRO 3014.78 941.03 6.23 1046.48 1271.23 330.20 -9.07 67% 8274 8.3 13.9 4.7 11.1 103.425 12,821
Results & Discussion
BW30-440i+LE-440i 102.01
120 100 80
65
60
36.38
40
16.34
8.775
20
0.87
0 Recovery %
Memrane price $*100.
Power kW
Feed Pressure bar
Specific Energy kWh/m³
Permeate TDS mg/l
BW30-440i+LE-440i 120 102.01
80
65
60 36.38
Memrane price $*100.
40 16.34
8.775
Recovery %
100
20
0.87
Power kW
Feed Pressure bar
Specific Energy kWh/m³
0 Permeate TDS mg/l
LE-400
LE-440i
118.88
130.44
120 100
65
80 60
33.88 15.22
8.01
65 31.79
40 20
0.81
0
Recovery Memrane % price $*100.
Power kW
Feed Specific Permeate Pressure Energy TDS mg/l bar kWh/m³
Recovery %
Memrane price $*100.
HRLE-440i 65 31.9
Recovery Memrane % price $*100.
14.33 0.77 Power kW
Feed Pressure bar
Power kW
0.76
Feed Specific Permeate Pressure Energy TDS mg/l bar kWh/m³
XLE-440 78.58
8.37
14.28
8.73
Specific Permeate Energy TDS mg/l kWh/m³
80 70 60 50 40 30 20 10 0
140 120 100 80 60 40 20 0
279.01
300 250 200
150 100
65 8.37
29.19
50
13.11
Recovery Memrane Power kW Feed % price Pressure $*100. bar
0.7 Specific Energy kWh/m³
0
Permeate TDS mg/l
BW30-HR-440i
65
70
61.63
60 50 40
37.82
30 20
16.99
BW30-400
10
8.37 0.91
0
72.82
65
80 70 60
Recovery Memrane Power kW Feed % price Pressure $*100. bar
Specific Energy kWh/m³
42.74
Permeate TDS mg/l
40
7.83 79.81
65 39.68
Recovery %
Memrane price $*100.
17.82 0.95 Power kW
30
19.2
BW30-440i
8.82
50
Feed Specific Permeate Pressure Energy TDS mg/l bar kWh/m³
20 10
1.03
0 80 70 60 50 40 30 20 10 0
Recovery Memrane Power kW Feed % price Pressure $*100. bar
Specific Energy kWh/m³
Permeate TDS mg/l
65
BW30HR-440i+BW30-440i
68.7
70 60 50
38.37
40 30
17.24 8.595
10
0.92
Recovery Memrane Power kW Feed % price Pressure $*100. bar
65
20
Specific Energy kWh/m³
BW30HR-440i+HRLE-440i
BW30HR-440i+XLE-440
0
170.09
Permeate TDS mg/l
65 34.16 65.19
70
15.35
8.37
0.82
60 50
35.55
40 30
15.97 8.37
Recovery Memrane Power kW Feed % price Pressure $*100. bar
20 10
0.85 Specific Energy kWh/m³
0
Permeate TDS mg/l
Recovery Memrane % price $*100.
Power kW
Feed Pressure bar
Specific Permeate Energy TDS mg/l kWh/m³
180 160 140 120 100 80 60 40 20 0
Case No. Element Type
1
2
3
BW30-440i
LE-400
LE-440i
4
5
6
7
8
HRLE-440i BW30HR-440i BW30-400 BW30-440i+LE- XLE-440
BW30HR440i+HRLE-440i
440i Av. Osmotic Pressure bar
9
6.10
6.08
5.84
6.10
6.11
6.11
6.09
5.98
6.11
5339.83
5339.83
5339.83
5339.83
5339.83
5339.83
5339.83
5339.83
5339.83
Feed Temperature oC
25.0
25.0
25.0
25.0
25.0
25.0
25.0
25.0
25.0
Average NDP bar
9.44
6.58
6.58
5.81
8.56
10.59
8.11
4.88
7.65
Feed Pressure bar
17.82
15.22
14.28
14.33
16.99
19.20
16.34
13.11
15.97
Feed Flow m³/d
1538.46
1538.46
1538.46
1538.46
16.99
1538.46
1538.46
1538.46
1538.46
Permeate Flow m³/d
999.92
999.87
1000.05
1000.05
999.89
999.93
999.82
999.91
999.95
Permeate TDS mg/l
79.81
118.88
130.44
78.58
61.63
72.82
102.01
279.01
65.19
Specific Energy kWh/ m³
0.95
0.81
0.76
0.77
0.91
1.03
0.87
0.70
0.85
Power kW
39.68
33.88
31.79
31.90
37.82
42.74
36.38
29.19
35.55
26.69
24.27
24.27
24.27
26.70
24.27
24.27
24.27
Yes
No
No
No
Yes
No
Feed TDS mg/l
Average Flux lmh Design warnings
No
Yes
Case No. Model Manufacturer Application Application Pump Flow Pump Pressure (kPa) Turbine Flow (L/s) Turbine Pressure (kPa) Membrane Feed Pressure (kPa) Booster Pressure (kPa) Total Power (kW) Turbocharger Efficiency Max Working Pressure (kPa) Min Pump –Side Flow (L/s) Max Pump –Side Flow (L/s) Min Turbine –Side Flow (L/s) Max Turbine –Side Flow (L/s) Min Concentrate Pressure (kPa) Cost
1 LPT-250 ERI Pre-stage BWRO 17.81 1311.36 6.23 972.97 1448.84 137.48 -7.38 45% 2758 9.5 23.7 4.7 11.8 103.425 15,000
2 HPB60 Fedco Pre-stage BWRO/ SWRO 17.81 1238.82 6.23 972.97 1448.84 210.0 -9.26 69% 8274 12.6 20.8 6.9 16.7 103.425 15,191
3 LPT-125 ERI Inter-stage BWRO 2929.11 988.21 6.23 1030.17 1248.68 260.47 -7.98 53% 2758 4.4 11.7 2.2 5.8 103.425 11,000
4 HPB40 Fedco Inter-stage BWRO/ SWRO 3014.78 941.03 6.23 1046.48 1271.23 330.20 -9.07 67% 8274 8.3 13.9 4.7 11.1 103.425 12,821
