Technological Applications of Marine Reverse Osmosis Desalination System

In long-distance ocean voyages, freshwater reserves are always a critical factor limiting sailing range, crew living conditions, and the normal operation of equipment. Traditional ships rely on port calls for freshwater replenishment, which not only increases operating costs but also restricts route planning and sailing duration.

Marine reverse osmosis desalination system can precisely match the freshwater needs of small and medium-sized vessels (such as yachts, fishery patrol vessels, research vessels, and cargo ships). Through mature reverse osmosis technology, they enable the efficient utilization of seawater resources, providing a stable, efficient, and energy-saving freshwater supply for ship navigation.

marine reverse osmosis desalination machine

What is the structure of a marine reverse osmosis desalination system?

The marine desalination system is based on reverse osmosis membrane separation technology and is specifically designed to meet the unique operating conditions of ships. The entire system consists of six core modules: a pre-treatment unit, a high-pressure pump, a reverse osmosis membrane assembly, an energy recovery device, a product water storage unit, and a control system, forming a complete closed-loop process from seawater intake and purification to freshwater production.

What does the complete purification process involve?

① Pretreat the seawater by passing it through a pretreatment unit, which uses quartz sand filtration, activated carbon adsorption, and precision filtration to remove impurities like sand, suspended solids, colloids, organic matter, and residual chlorine. This step prevents contamination and clogging of subsequent membrane components.
② Pressurize the pretreated seawater to tens of kilograms of pressure using a high-pressure pump, then force it through a reverse osmosis membrane with a pore size of only 0.0001 micrometers. The membrane selectively retains salts, heavy metal ions, bacteria, viruses, and other harmful substances, while allowing water molecules to pass through, producing freshwater that meets ship standards.
③ Buffer the freshwater in a storage unit, then transport it through a pipeline network for crew use. Discharge the retained concentrated brine directly back into the ocean to achieve environmentally friendly disposal.

desalination system process

What are the advantages of using reverse osmosis desalination system on ships?

Reverse osmosis seawater desalination system offers multiple advantages for long-distance ocean voyages, completely addressing the shortcomings of traditional water replenishment methods.

reverse osmosis desalination system for ship

  • Seawater desalination systems offer multiple advantages for long-distance ocean voyages, completely addressing the shortcomings of traditional water replenishment methods.
  • Strong resistance to impact, especially against the bumps, tilting, and temperature changes encountered during ship navigation. The system features a vibration-resistant design and wide-temperature range adaptation technology, allowing it to operate normally in ambient temperatures from -5℃ to 45℃ and at tilt angles of ≤30°, without affecting water production quality or efficiency.
  • Modular integrated design, with each unit component being compact and having a space-saving layout, allowing for flexible installation based on the ship’s deck space and engine room layout, without requiring extensive modifications.
  • The system boasts strong independent water supply capabilities, directly utilizing seawater resources during the ship’s voyage. It can produce fresh water on-site and in real-time, eliminating the need for port resupply. This ensures self-sufficiency in freshwater regardless of where the ship is sailing in the world.

Summarize

The reverse osmosis desalination system, with its advanced technological principles, core advantages tailored to maritime applications, and powerful ability to handle complex environments, has completely solved the problem of freshwater supply for ships on long-distance voyages.
It not only provides high-quality freshwater for the crew, improving comfort and safety during voyages, but also eliminates reliance on port water resupply, thus enhancing the endurance of ocean-going vessels.

OUR FACTORY
WORKSHOPS

Guangdong Xinyuanyuan Environmental Protection Technology Co., Ltd., founded in 2018, is an integrated environmental enterprise specializing in scientific research, production and sales, boasting a professional team of 20 to 99 members and a well-equipped facility spanning approximately 1,800 square meters at Panyu District, Guangzhou, China. Strategically situated in the core of the Pearl River Delta, the company leverages its prime location to support efficient operations, expand business across agriculture, chemical engineering, medical care and food processing industries (covering environmental equipment R&D, water/sludge treatment and ecological restoration), and facilitate seamless import-export operations for global clients.

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water treatment equipment workshop
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FAQ

We customize equipment parameters and treatment solutions based on your water need (such as water quality, voltage, process, etc.), and all products comply with international universal standards (including ISO, CE, etc.) with complete certification documents. From equipment selection and installation guidance to post-sales maintenance, our professional technical team offers full-cycle support. Leveraging our global cooperative logistics network, we ensure fast delivery with an after-sales response time of no more than 24 hours, fully resolving any concerns you may have during overseas procurement and usage.

-We usually quote within 24 hours after we get your inquiry
(Except weekend and holidays).
-If you are very urgent to get the price, please call us
or contact us in other ways so that we can offer you a quote.
-It depends on the order quantity and voltage of machine you need.
-Usually we can ship within 7-15 days for small quantity,
and about 30 days for large quantity.
Special voltage we may need about 40 days for production.
-This machine is very easy for install. The machine you received 
is assembled. You will only need to follow steps on our English 
instruction and video. If big capacity of machines, we can arrange 
engineer to help installation.
-T/T,Western Union,MoneyGram and L/C at sight. This is negotiable.
After we confirmed order, I will send you contract sales with our 
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bank account by T/T. Or you can choose to place order online.
-Machine will be packed by standard export plywood case.
It is suitable for long time shipment by sea/air/train.
-It could be shipped by sea,by air, by train.
Please confirm with us before placing orders.
-We provide 1 year warranty. It means when there is any parts 
broken in one year, we will send spare parts to you for free.
-1. We keep good quality and competitive price to ensure our customers benefit
-2. We respect every customer as our friend and we sincerely do business 
and make friends with them,no matter where they come from.

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