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10.10 WATER PRODUCTION COSTS 235 Cost Comparison of 50,000 m3/day Seawater Reverse Osmosis (SWRO) Desalination Plants
TABLE 10.2
Item
CAPITAL COSTS
Open ocean intake
Intake pump station
Coarse and fine screens Microscreens Coagulation/flocculation system Cartridge filters
Source water chlorination system
Pretreatment membrane cleaning system
Filter tanks (excluding media/membranes)
Filtration media (sand/anthracite or ultrafiltration membranes)
Membrane pretreatment systemdservice equipment Filter backwash system
Dechlorination system
Land costs
SWRO system
Posttreatment system
Solids handling facilities
Discharge outfall
Other facilities and systems
Engineering and construction management Start up and commissioning
Other costs
Total capital costs
Amortized capital costs US$/m3 (US$/1000 gal)
With Granular Media and Membrane Pretreatment
Granular Media Pretreatment
2017 US$ (in 1,000)
2,760 1,350 690 0
470 1,320 210
0 4,890 550
0
520
110
1,380
35,320
2020
1,520
2,530
9,910
10,140
2,060
24,450 US$102,200 US$0.48 (US$1.82)
Membrane Pretreatment
2017 US$ (in 1,000)
2,900 1,450 750 1,650 0
0 220 990 3,490 4,280
2,480
880
190
990
30,910
2020
100
2,690
9,910
12,950
2,410
26,840 US$108,100 US$0.50 (US$1.89)
(Continued)