Selection Guide for Marine Seawater Desalination Equipment -

When sailing on the vast ocean, access to fresh water is crucial for both crew and operations. Marine reverse osmosis (RO) desalination equipment has become an essential solution for ships and vessels. However, selecting the right equipment can be challenging without proper guidance. This article offers clear, actionable advice to help you make an informed choice.

Marine Reverse Osmosis Desalination Equipment

1. Understand Your Water Demand

First and foremost, evaluate the daily water consumption on your vessel. A fishing boat may require 1,000–2,000 liters per day, while larger cargo ships might need over 20,000 liters. To illustrate, here’s a quick reference:

Vessel Type	Daily Water Demand (Liters)
Small Fishing Boat	500–5,000
Cargo Ship	5,000–20,000
Cruise ship	20,000–100,000

Knowing your water demand ensures you choose a system with adequate capacity, avoiding underperformance or overspending.

2. Evaluate Water Quality

Next, assess the salinity of the seawater where your vessel operates. Coastal waters often have salinity levels between 10,000 and 35,000 ppm, while open-ocean water can reach 45,000 ppm. A high-salinity environment demands a robust RO system capable of handling extreme conditions.

3. Choose the Right Size and Efficiency

Moreover, consider the size and efficiency of the equipment. Compact systems save valuable space on your vessel, but they must still meet performance standards. Look for energy-efficient models to reduce operational costs.

For instance, high-efficiency marine RO units typically consume 3–5 kWh per cubic meter of water produced, compared to older systems that may use 8 kWh or more.

4. Pay Attention to Materials

Durability is another key factor. Because marine RO systems operate in corrosive environments, stainless steel and corrosion-resistant materials are essential. Opt for components like titanium pumps and fiberglass-reinforced pressure vessels for extended lifespan and reliability.

5. Available Treatment

TYPE	Output water（Ton/Day）	Desalinating（Rate%）	TDS (mg/L)	Operation Pressure (Mpa)	Power Consumption (KW)	Net Weight (kg)	Size (LxWxH)
BM-FSHB0.5	0.5	99.2	<700	3.5-5.5	0.75	15	680x250x350
BM-FSHB1.5	1.5	99.2	<700	3.5-5.5	1.1	100	800x500x650
BM–FSHB3	3	99.2	<700	3.5-5.5	1.5	150	500x570x1350
BM-FSHB5	5	99.2	<700	3.5-5.5	2.2	400	910x500x1540
BM-FSHB10	10	99.2	<700	3.5-5.5	5.5	600	1520x780x1935
BM-FSHB20	20	99.2	<700	3.5-5.5	10	900	1520x830x2025
BM-FSHB30	30	99.2	<700	3.5-5.5	15	1200	2440x1000x2120
BM-FSHB40	40	99.2	<700	3.5-5.5	15	1600	2300x1100x2310
BM-FSHB50	50	99.2	<700	3.5-5.5	18.5	2000	2300x1100x2310
BM-FSHB60	60	99.2	<700	3.5-5.5	21	2200	2350x1200x2300
BM-FSHB100	100	99.2	<700	3.5-5.5	45	4500	5000x2000x1900
BM-FSHB200	200	99.2	<700	3.5-5.5	60	5500	5000x2000x1900
BM-FSHB500	500	99.2	<700	3.5-5.5	110	1450	9500x2000x2000
BM-MHB2000	2000	99.2	<700	3.5-5.5	350	45000	15000x10000x3500

6. Consider Maintenance and Support

In addition, evaluate the maintenance requirements and availability of technical support. Choose systems with easy-to-clean membranes and accessible spare parts to minimize downtime. Reliable after-sales service can be a lifesaver, especially during long voyages.

Conclusion

In conclusion, choosing the right marine RO desalination equipment involves assessing water demand, salinity, size, efficiency, materials, certifications, maintenance needs, and budget. By following these guidelines, you can ensure a reliable and cost-effective freshwater supply for your vessel, enhancing operations and crew satisfaction.

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Selection Guide for Marine Seawater Desalination Equipment