Product Type: SWRO skid with recovery

Capacity Range: 0.5–50 m³/day by model

Recovery Rate: 30–45% with ERD

Material: 316L / duplex SS wetted parts

Power: 220/380V 50/60Hz or 24V D

Product Detail | Technical Information | Packaging | More

Product Detail

Shanghai Mac is a leading Seawater Desalinator manufacturer and supplier.

A seawater desalinator is a reverse-osmosis system that converts high-salinity seawater of up to 45,000 ppm TDS into potable water below 500 ppm TDS for drinking, cooking, and galley use. It serves merchant ships, fishing vessels, yachts, offshore platforms, and shore-side docks, marinas, and island communities where a reliable freshwater supply cannot depend on port bunkering or bottled water. Conventional supply by barge or truck is costly, weather-dependent, and fails during long voyages or in remote coastal locations. The unit removes the logistics, cost, and shortage risk of carrying or purchasing freshwater, while a pressure-exchanger energy recovery device keeps power consumption at only 3–4 kWh per cubic meter. Our skid applies 316L stainless steel and automatic PLC control to deliver stable freshwater output under changing sea temperature and salinity for continuous onboard and dock operation.

If you want to know more about our Water Treatment products or Seawater Desalinator price please feel free to contact us, we will reply you within 24 hours.

1.The fresh water capacity ranges from 0.5 to 50 m³/day, so the unit can be sized to the daily demand of a vessel, dock or island.
2. The feed and product water quality accepts seawater up to 45,000 ppm TDS and delivers product below 500 ppm through pre- and post-filtration for potable use.
3. The recovery rate of 30%–45% is raised by the energy recovery device, and it should be matched to the seawater source and available power supply.

4. The SWRO membrane operates at 55–69 bar under the high-pressure pump, while the energy recovery device lowers the power used per cubic meter.
5. The construction uses 316L or duplex stainless steel wetted parts with multi-voltage power options, and the compact skid fits tight engine-room or dock spaces.
6. Different configurations are available for merchant vessels, fishing boats, yachts and shore-based dock or island stations.

1. High-efficiency Brine Energy Recovery:Uses pressure-exchanger ERD to recover up to 95% brine pressure energy, reducing power consumption to 3–4 kWh/m³. It cuts fuel and power costs for vessels and remote docks.
2. Corrosion-resistant Marine-grade Construction:Frames and wetted parts adopt 316L & duplex stainless steel with anti-corrosion coating. It extends service life under salt spray and high-humidity marine environments.
3. PLC Automatic Control & Safety Protection:Touchscreen PLC supports auto flushing, TDS monitoring, alarms and abnormal-condition auto shutdown. It enables safe unattended operation and reduces crew workload.

4. Compact Modular Skid Design:Modular skid with forklift feet fits engine rooms and dock containers. It speeds up installation for space-limited vessels and shore stations.
5. Adaptive Freshwater Production:Maintains stable freshwater output with variable seawater temperature and salinity. It ensures consistent water supply in tropical and cold waters.
6. Easy Maintenance Structure:Quick-connect membrane housings and accessible pre-filters with standard spare parts. It reduces downtime and simplifies onboard & shore maintenance.

1. Ocean-Going Vessel Water Supply:Supplies drinking, galley and fish-hold ice water for long-voyage ships. Compact automatic operation cuts port water bunkering; optional 24V DC connects to vessel batteries.
2. Offshore Platform Freshwater Supplement:Supplements offshore platform water systems. Runs continuously with PLC monitoring and marine-grade materials for reliable unattended operation.
3. Coastal Town & Marina Desalination Station:Serves coastal towns and marinas. Parallel skid design scales water output to meet changing local demand.

4. Remote Island Water Production:Provides freshwater for islands with limited natural water. Stable output under variable seawater temperature and salinity; modular skid for fast deployment.
5. Luxury Yacht Water System:Delivers potable water for yacht cabins and galleys. Quiet, compact and low energy consumption.
6. Tactical Emergency Freshwater Support:Tactical independent water supply. Robust redundant structure with PLC monitoring for reliable operation in harsh conditions.

Technical Information of Seawater Desalinator:

Technical Data	Unit	S-6	S-12	S-18	S-24	S-48
Rated Producing Water	m³/ d	6	12	18	24	48
Rated Recovery Rate Min Intake Pressure	% bar	330	330	330	330	330
Max Intake Pressure	bar	2	2	2	2	2
Min System Pressure	bar	20	20	20	20	20
Max System Pressure	bar	70	70	70	70	70
RO Membrane	inch	2.5”×40”×5	4”×40”×4	4”×40”×6	4”×40”×8	8”×40”×4
Size(LWH)	mm	950×920×1610	1500×830×1700	1500×900×2010	1500×960×2010	2200×1250×2050
Frame		304	304	304	304	304
HP Pipes		Duplex Steel 2205	Duplex Steel 2205	Duplex Steel 2205	Duplex Steel 2205	Duplex Steel 2205
Intake Seawater
TDS	mg/L	20,000-40,000	20,000-40,000	20,000-40,000	20,000-40,000	20,000-40,000
Temperature	℃	5-45	5-45	5-45	5-45	5-45
SDI		<3	<3	<3	<3	<3
Producing Water
Desalination Rate	%	99	99	99	99	99
TDS	ppm	<500	<500	<500	<500	<500
Power
Rated Power	kW	3.5	6	8	10.2	19
Voltage	V	1PH/220 AC	1PH/220 AC	3PH/380 AC	3PH/380 AC	3PH/380 AC
Frequency	Hz	50	50	50	50	50
Note:Other power input like 440V/60Hz,please contact us.

Packaging of Seawater Desalinator:

Standard Packaging

Each unit is wrapped in protective PE film and fixed to a steel-reinforced base frame with shock-absorbing blocks. The skid is then packed in a fumigated wooden export crate (or plywood case), with inner anti-rust paper and foam padding around the

control panel and membrane housings. Crates are stacked on fumigated wooden pallets and secured with steel strapping for international shipment.

Shipping

We support FCL and LCL sea freight, and express delivery depending on order quantity and destination. Trade terms include EXW / FOB / CIF; other terms may be available upon request. Shipping costs are calculated based on cargo volume, gross weight, destination, and selected transportation method.

Lead Time

Samples / demo units: 25–30 working days

Standard orders: 30–35 working days

Customized orders: 45–50 working days

Q1: How long does sample / demo-unit preparation take?

A: Demo or sample-size units are usually ready in 3–7 working days after confirmation.

Q2: What information do you need for a custom quotation?

A: Daily freshwater demand (m³/d), feed-water source and TDS, available power (voltage/phase/DC), installation space, and destination port.

Q3: What is the MOQ and production lead time?

A: MOQ is 1 unit. Standard lead time 15–25 working days; customized 25–40 working days.

Q4: What quality standards does the product meet?

A: Manufactured under ISO 9001; CE available. Product water meets WHO/EU drinking-water limits (TDS ≤ 500 ppm).

Q5: What factors should I consider when choosing a seawater desalinator?

A: Required daily capacity, feed seawater TDS and temperature, available power, recovery rate, footprint, and whether an energy recovery device is included for low running cost.

Q6: What is the difference between SWRO and brackish-water RO?

A: SWRO uses seawater membranes and 55–69 bar pressure for ~35,000–45,000 ppm feed;brackish RO uses lower-pressure membranes (~10–25 bar) and cannot handle full seawater salinity. Use SWRO for open-ocean / dock seawater intake.

Q7: What information do you need from me to recommend the right model?

A: Vessel or site type, daily water demand, feed salinity, power supply, and space constraints — we then match capacity, pump, and membrane configuration.

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