Seawater reverse osmosis desalination plants
How reverse osmosis desalination plants work?
Seawater ro plants use Reverse Osmosis to make water. This is the opposite process of osmosis that plants use. Haiyuan definition of Reverse Osmosis and description below:
·SWRO Reverse osmosis (RO) is a separation process that uses pressure to force a solvent through a membrane that retains the solute on one side and allows the pure solvent to pass to the other side.
· The membranes used for reverse osmosis have a dense barrier layer in the polymer matrix where most separation occurs. In most cases the membrane is designed to allow only water to pass through this dense layer while preventing the passage of solutes (such as salt ions).
· This process requires that a high pressure be exerted on the high concentration side of the membrane, usually 2 to17 bar 30 to 250 psi, for fresh and brackish water, and 40 to 70 bar 600 to 1000 psi, for seawater, which has around 24 bar 350 psi, natural osmotic pressure which must be overcome.
· Although Reverse Osmosis seems like a complex system it is really a simple and straightforward water filtration process. High-pressure (pump driven) reverse osmosis systems have been used for years to desalinate water to convert brackish or sea water to drinking water.
Reverse osmosis desalination plants
Seawater has high salt content, high hardness, and is corrosive to equipment, and the seasonal changes in water temperature make the reverse osmosis desalination system much more complicated than the conventional brackish water desalination system, and the engineering investment and energy consumption are also much higher. .Therefore, it is extremely important to reduce project investment and energy consumption through careful process design and reasonable equipment configuration, thereby reducing the unit water cost and ensuring the stable operation of the system.
The Basics of reverse osmosis desalination plants
Seawater ro system use the process of reverse osmosis to intake seawater and output clean, potable water suitable for any of your live-aboard needs. The newly made watermakers is then pumped into your vessel’s current water tank, while the leftover “brine” is thrown overboard. Most marine watermakers differ with regards to the method in which the water is pumped. Typically, the water can be either electrically driven (either AC or DC) or powered by your boat’s engine. Watermakers also come in all shapes and sizes, with best suited for marine boats.
Generic specifications of Reverse osmosis desalination plants process
Chlorine Dosing System– disinfection of feed-water
Booster Pump– delivers water at the required flow and pressure 30-40 psig
Multi-Media Filter– Multi-media filtration system is used to filter sand and sediment (turbidity) down to approximately 20 Microns. Both automatic and manual backwash option is available. Corrosion resistant, high performance composite & fiberglass tank will be used to hold the media.
Pre-Filtration System
5 micron cartridge type sediment filter further reduces suspended solids in the feed water stream to RO system.
Sodium Metabisulphite Dosing System
One metering injection systems will be supplied for controlling different elements in the feed water of the RO plant and will neutralise the Chlorine in the feed water.
Acid Dosing System
Acid Dosing will ensure pH is at a level where scaling is reduced. The pH of seawater is normally above 8.
Antiscalant Dosing System
One metering injection systems will be supplied for controlling different elements in the feed water of the RO plant and will reduce membrane fouling.
Caustic Dosing System(Post Treatment)
Caustic Dosing or other pH builders will help to stabilise the treated water and reduce the corrosive nature of RO water.
Chlorine Dosing System(Post Treatment)
The Chlorine Dosing System sterilises product water.
UV Sterilisation System(Post Treatment)
Sterilises product water by alternating the DNA structure inside bacteria.
Ozone System(Post Treatment)
Sterilises product watera
Product detail of SWRO seawater RO system seawater reverse osmosis system
We have more sizes and output water capacity for your choice for SWRO seawater RO system seawater reverse osmosis system:
According to customers’ water source analysis report and the final water standard required ,we will suggest customer to choose the suitable seawater reverse osmosis and we have a good price for you.
Why we make you choose ourReverse osmosis desalination plants ?
1. We can provide oversea service to site installation.
2. OEM&ODM available.
3. The punctual delivery of goods, quality and quantity guaranteed.
4.We have a professional team to provide customers with pre-sales, in-sales and after-sales services.
5.We can provide technical support via phone/email/instant communication tools, or remote video.
6.We have equipment installation/debugging/maintenance, and provide detailed video tutorials (including paper and electronic documents).
7.Portable seawater desalination RO machine packing: Plywood case packing for exporting.
8.We have shipping forwarder to deliver all over the world, customers also can use your own shipping agents.
More about the SWRO seawater RO system seawater reverse osmosis systemm
Please add Wechat/Whatapp +8613538523642 or +86 13798883773
Or send Email: sales@seawaterroplants.com
