SW9000-LX land based seawater desalination system, 9000 GPD, provides fresh water for vessels & ships. | AMPAC USA
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SW10K-LX Land Based Seawater Desalination Watermaker by AMPAC USA provides 10,000 GPD for your water treatment needs. | AMPAC USA
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SW80K-LXC mobile seawater desalination watermaker. Fully packaged, containerized, and turnkey system for potable water | AMPAC USA
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Twin redundant seawater desalination RO watermakers, 2 X 2,000 GPD for reliable water purification | AMPAC USA
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SW100K-LXC Mobile Seawater Desalination Plant is a containerized, turnkey watermaker for potable water production. | AMPAC USA
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SW500-LC land-based seawater desalination watermaker: customizable, cost-effective, ready to ship for your water treatment needs | AMPAC USA
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SW20K-LX land based seawater desalination watermaker provides 20,000 GPD for marine vessels. | AMPAC USA
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Get pure water on your ship, boat, or vessel anywhere with the SW100K-LX Mobile Seawater Desalination Watermaker System | AMPAC USA
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AMPAC USA SW9000-LX land-based seawater desalination watermaker produces 9000 GPD for various applications. | AMPAC USA
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Get pure water with the SW80K-LX 80,000 GPD Land Based Sea Water Desalination Watermaker. | AMPAC USA
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Land-based SW60K-LX seawater desalination watermaker provides 60,000 GPD pure water for large vessels & facilities. | AMPAC USA
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SW6000-LX Seawater Desalination Watermaker for land-based use, producing 6,000 GPD. Perfect for remote sites. | AMPAC USA
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SW5000-LX land-based seawater desalination system produces 5000 GPD / 19,000 LPD of pure water. | AMPAC USA
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Land based seawater desalination watermaker SW40K-LX provides 40,000 GPD for vessels, ships, and boats | AMPAC USA
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SW4000-LX land-based seawater desalination watermaker. Produces 4000 GPD / 15,140 LPD of pure water. | AMPAC USA
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SW3000-LX land-based seawater desalination system provides 3000 GPD for large boats, ships, and various offshore vessels | AMPAC USA
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Dual 12,000 GPD seawater desalination watermakers on one skid for 24,000 GPD total. Model SW24000-LX. | AMPAC USA
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SW12000-LX Land Based Seawater Desalination Watermaker: 12,000 GPD / 45,000 LPD for large vessels & marine operations | AMPAC USA
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SW2000-LX Sea Water Desalination Watermaker for huge boats, ships, PSV, MPSV, and AHTS type vessels. | AMPAC USA
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SW1500-LX land-based seawater desalination system makes ocean water drinkable for various uses. | AMPAC USA
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Desalinate seawater for communities & industries with AMPAC USA's 6,000 GPD Reverse Osmosis Watermaker. | AMPAC USA
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600 GPD Seawater Desalination Watermaker for boats & small ships. Get fresh water from the ocean with reverse osmosis. | AMPAC USA
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Desalinate seawater with AMPAC USA's 5,000 GPD reverse osmosis watermaker for large-scale water needs. | AMPAC USA
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Get pure water anywhere with the AMPAC USA 4,500 GPD Seawater Desalination Reverse Osmosis Watermaker SW4500 | AMPAC USA
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Seawater Desalination Reverse Osmosis Watermaker 3000 GPD, SW3000 makes boat rides safe by providing you pure water anywhere.
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Get 300 GPD pure drinking water from seawater with this Reverse Osmosis Watermaker. Perfect for marine and remote use | AMPAC USA
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Desalinate seawater with the AMPAC USA SW2000 reverse osmosis watermaker, producing 2,000 GPD of pure water. | AMPAC USA
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Seawater Desalination RO Watermaker 200 GPD | 750 LPD by AMPAC USA provides pure water for various applications. | AMPAC USA
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Get 1,500 GPD pure water from seawater with this reverse osmosis watermaker, ideal for boaters. | AMPAC USA
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Produce 1000 GPD of fresh drinking water from seawater with this marine-grade reverse osmosis watermaker. | AMPAC USA
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Seawater Desalination RO Watermaker 100 GPD for marine use. Get reliable freshwater from the ocean. | AMPAC USA
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Military Sea Water Desalination 5000GPD, ROWPU SW5000-ML is awesome for navy ships. To buy this Military Water Purification System available at best price & deliver swiftly, call at 909-548-4900.
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ROWPU SW4500 (4500GPD) military sea water desalination system for Navy and global military units. | AMPAC USA
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Portable emergency seawater desalination watermaker with 150 GPD capacity for clean drinking water. | AMPAC USA
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SW20K-Class1-Div2 Off-Shore Sea Water Desalination Watermaker, fully automated for oil platforms. | AMPAC USA
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Get the SW10K-C1D2 Off-Shore Sea Water Desalination Watermaker from AMPAC USA, fully automated and explosion-free. | AMPAC USA
View detailsFrequently Asked Questions
What energy does seawater reverse osmosis require, and how has that changed with energy recovery devices?
SWRO without energy recovery requires 8-12 kWh per cubic meter of product water. Modern plants using pressure exchangers or isobaric energy recovery devices reduce energy consumption to 3-4 kWh per cubic meter, recovering up to 98% of the hydraulic energy in the brine stream. AMPAC USA specifies energy recovery on all SWRO systems above 50,000 GPD because the payback period on the equipment is typically under two years at commercial electricity prices.
What is the typical TDS of seawater and what operating pressure does SWRO require?
Open ocean seawater averages 35,000 mg/L TDS with an osmotic pressure of approximately 400 psi. SWRO systems operate at feed pressures of 800-1,200 psi to overcome osmotic pressure and achieve practical flux rates of 6-14 LMH. Coastal waters with freshwater mixing may have TDS as low as 10,000-20,000 mg/L, which reduces required operating pressure significantly and improves energy efficiency.
What pretreatment is required before SWRO membranes?
Seawater contains suspended solids, biological organisms, organic matter, and scaling ions that would foul SWRO membranes within days without pretreatment. Standard pretreatment includes coagulation, dual-media filtration or ultrafiltration, and cartridge filtration to achieve a Silt Density Index below 3. Antiscalant dosing prevents carbonate and sulfate scale, and chlorination followed by dechlorination controls biological fouling while protecting the polyamide membrane from oxidative damage.
What recovery rate is achievable with seawater RO, and what limits it?
SWRO systems typically operate at 40-55% recovery, meaning 40-55% of the feed seawater becomes product water and 45-60% becomes concentrated brine at 60,000-70,000 mg/L TDS. Recovery is limited by the increasing osmotic pressure of the concentrate, the solubility limits of calcium sulfate and other scaling compounds, and the increasing energy required to maintain flux as brine concentration rises. Pushing recovery above 55-60% requires specialized scale inhibition and higher operating pressures.
What product water quality do AMPAC USA SWRO systems deliver?
Our SWRO permeate typically reaches 200-400 mg/L TDS directly from the membrane, with chloride levels around 50-100 mg/L. Most potable water applications then pass the permeate through a calcite or lime contactor to add alkalinity and hardness, raising pH and reducing the water's corrosivity toward distribution piping. For industrial applications requiring lower TDS, a second-pass RO or mixed-bed DI polishes the permeate further.