Oil & Gas
Land-Based Desalination

ACX2 Series

Reverse Osmosis Systems

ACX2-Series systems are engineered to treat demanding feed water conditions like low temperature or a high content of dissolved solids, and robust applications requiring a high pressure pump (up to 400 psi). The ACX2-Series is ideally suited for brackish water with total dissolved solids (TDS) in the range of 5,000 to 10,000 ppm.

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Equipment Characteristics
models acx2-28800 acx2-43200 acx2-57600 acx2-75000 acx2-90000 acx2-120200 acx2-150000 acx2-180000
design
System Capacity* gpd
(m3/day)
28,800 (109) 43,200 (163) 57,600 (218) 75,000 (284) 90,000 (341) 120,200 (454) 150,000 (568) 180,000 (681)
Configuration* Single Pass Single Pass Single Pass Single Pass Single Pass Single Pass Single Pass Single Pass
Feed Water Source** (ppm) TDS < 10,000 TDS < 10,000 TDS < 10,000 TDS < 10,000 TDS < 10,000 TDS < 10,000 TDS < 10,000 TDS < 10,000
Standard Recovery** 54% 65% 60%< /td> 67% 75% 75% 75% 75%
Recovery w/ Concentrate
Recycle gpm**
75% 75% 75% 75% N/A N/A N/A N/A
rejection and flow rates
Nominal TDS Rejection 97 - 99% 97 - 99% 97 - 99% 97 - 99% 97 - 99% 97 - 99% 97 - 99% 99.3%
Permeate Flow* gpm (lpm) 20 (75.6) 30 (113.4) 40 (151.2) 50 (189.0) 60 (226.8) 80 (302.4) 100 (378.0) 125 (472.5)
Minimum Concentrate
Flow gpm (lpm)
14 (53) 14 (53) 14 (53) 14 (53) 14 (53) 14 (53) 14 (53) 14 (53)
connections
Feed (in) 2 FNPT 2 FNPT 2 FNPT 2 FNPT 3 FNPT 3 FNPT 3 FNPT 3 FNPT
Permeate (in) 1 1/2 FNPT 1 1/2 FNPT 2 FNPT 2 FNPT 2 1/2 FNPT 2 1/2 FNPT 3 FNPT 3 FNPT
Concentrate (in) 1 1/4 FNPT 1 1/4 FNPT 1 1/4 FNPT 1 1/4 FNPT 1 1/2 FNPT 1 1/2 FNPT 2 FNPT 2 FNPT
Clean-In-Place Port (in) 1 1/2 FNPT 1 1/2 FNPT 1 1/2 FNPT 1 1/2 FNPT 2 FNPT 2 FNPT 2 FNPT 2 FNPT
Chemical Feed Port (in) 1/2 NPT 1/2 NPT 1/2 NPT 1/2 NPT 1/2 NPT 1/2 NPT 1/2 NPT 1/2 NPT
membranes
Membranes Per Vessel 2 2 2 2 4 4 4 4
Membrane Quantity 4 6 8 10 12 16 20 24
Membrane Size 8040 8040 8040 8040 8040 8040 8040 8040
vessels
Vessel Array 1:1 1:1:1 1:1:1:1 2:1:1:1 2:1 2:1:1 3:1:1 3:2:1
Vessel Quantity 2 3 4 5 3 4 5 6
pumps
Pump Type Vertical
Multistage
Centrifugal Pump
Vertical
Multistage
Centrifugal Pump
Vertical
Multistage
Centrifugal Pump
Vertical
Multistage
Centrifugal Pump
Vertical
Multistage
Centrifugal Pump
Vertical
Multistage
Centrifugal Pump
Vertical
Multistage
Centrifugal Pump
Vertical
Multistage
Centrifugal Pump
Motor HP (KW) 15 (11) 15 (11) 25 (19) 25 (19) 25 (19) 40 (30) 40 (30) 50
electrical
Standard Voltage*** 460V, 60Hz, 3Ph 460V, 60Hz, 3Ph 460V, 60Hz, 3Ph 460V, 60Hz, 3Ph 460V, 60Hz, 3Ph 460V, 60Hz, 3Ph 460V, 60Hz, 3Ph 460V, 60Hz, 3Ph
system dimensions
L x W x H (in/cm) 112 x 35 x 85
(284 x 89 x 216)
112 x 35 x 85
(284 x 89 x 216)
112 x 35 x 85
(284 x 89 x 216)
112 x 35 x 85
(284 x 89 x 216)
194 x 41 x 85
(493 x 104 x 216)
194 x 41 x 85
(493 x 104 x 216)
194 x 41 x 85
(493 x 104 x 216)
194 x 41 x 85
(493 x 104 x 216)
Weight (lb/kg) 2130 (970) 2450 (1,110) 3040 (1,380) 3340 (1,520) 4100 (1,860) 4490 (2,040) 5280 (2,400) 5640 (2,560)
operating limits
Design Temperature (°F/°C)* 77 (25) Maximum Turbidity (NTU)* 0
Maximum Feed Temperature (°F/°C)* 85 (29) Maximum Free Chlorine (ppm) 0
Minimum Feed Temperature (°F/°C)* 41 (5) Maximum TDS (ppm)**** 10,000
Maximum Ambient Temperature (°F/°C) 120 (48.9) Maximum Hardness (gpg)**** 0
Minimum Ambient Temperature (°F/°C) 40 (4.4) Maximum pH (Continuous) 11
Maximum Feed Pressure (psi/bar) 85 (5.9) Minimum pH (Continuous) 3
Minimum Feed Pressure (psi/bar) 45 (3.1) Maximum pH (Cleaning 30 Min.) 12
Maximum Piping Pressure (psi/bar) 350 (16) Minimum pH (Cleaning 30 Min.) 2
Maximum SDI Rating (SDI) < 3 Maximum Turbidity (NTU)**** Up to 1

*Product flow is based on feedwater conditions of 5,000 ppm TDS at 50°F. Treatment ability of the RO system is dependent on feed water quality. Higher TDS and/or lower temperature will affect product flow.

**Product flow and recovery rates are based on feedwater conditions of 7000 ppm TDS at 65°F. Treatment ability of the RO system is dependent on feed water quality. Higher TDS and/or lower temperatures will reduce product flow. An Aqua-Chem Applications Engineer can rate the units for these other feed water conditions.

***Appropriate filtration must be installed in order to prevent premature membrane fouling. Scale prevention measures must be taken to prolong membrane life.