Seawater RO Membrane Housing With Fiberglass FRP High-Pressure Vessel Design

Seawater RO Membrane Housing With Fiberglass FRP High-Pressure Vessel Design

I.Conception

The seawater RO membrane housing is a high-strength pressure vessel specially designed for seawater desalination systems. Made of premium Fiberglass Reinforced Plastic (FRP), it ensures excellent corrosion resistance, a lightweight structure, and a long service life under continuous high-pressure operation. The design allows safe and reliable operation in harsh marine environments, widely used in seawater desalination plants, offshore platforms, ships, and coastal industries.

II.Key features:

High-pressure resistance (up to 1200 PSI / 8.4 MPa)

Corrosion-resistant FRP material, suitable for seawater environments

Compatible with standard 4” and 8” RO membranes

Easy installation and maintenance with end-port or side-port connections

III.Flowchart

Raw Seawater → Pre-treatment System (Sand Filter / Cartridge Filter) → High-Pressure Pump → FRP Membrane Housing (with Seawater RO Membrane) → Fresh Water Outlet → Post-treatment (UV / Chlorination / Mineralization, optional)

IV.Technical Parameters

FAQ

Q1: What type of RO membrane is available in your company?
A1: In general, we have a Domestic RO membrane and an Industrial RO membrane. For Domestic RO membranes, we have Municipal Tap water RO membrane, Rural Area Under Ground water RO membranes, High-flow low-pressure RO membranes, and Brackish water RO membranes.
For Industrial RO membrane, we have Low Pressure Energy saving RO membrane, BW Brackish water desalination RO membrane, FR Fouling Resistant RO membrane, as well as XLE Extreme Low Pressure RO membrane, and High Salinity Brackish Water Desalination RO membrane.

Q2: What is Salt Rejection Ratio?
A2: The Salt rejection describes the quality of salt removed from the Reverse Osmosis feed water stream as a percentage. It's one of the key elements of the RO membrane quality; however, other essential elements, such as RO membrane performance, durability, stability, application scope in different regions, and permeate flow output at the same pressure, will all be important factors to judge the quality of the membrane.

Q3: Is the Salt reaction of the RO membrane the higher the better?
A3: This will depend on the feed water quality. If the feed water quality is good, even a 90% salt rejection membrane will be workable; if the feed water is of bad quality and with a brackish water environment, a higher salt rejection above 95% is an ideal choice. Any membrane that meets the local drinking water standard will be good.

Q4: Are there any other elements we need to take into consideration when selecting the RO membrane?
A4: Yes, the pretreatment filter cartridge and pretreatment system will affect the RO membrane performance as well. Please select good-quality filters and a pretreatment system.

Q5: Why is there white foam-like water in the treated water at the initial usage?
A5: To preserve the RO membrane for a long shelf-life, and prevent the membrane from being oxidized, a water soluble protection material is coated on the surface of the membrane, which will be rejected in both the rejected water and treated water, for initial use, both rejected water and treated water should be rejected and the the RO membrane should be thoroughly cleansed. The treated water at initial use shall not be injected into the water storage tank.

Q6: Why dry RO membrane have a salt rejection rising process from its initial usage?
A6: The performance of the RO membrane is strictly connected to the wetness of the membrane. When the membrane is wet, it will reach its maximum performance. Dry membrane has a process to become wet from its initial usage. Make sure that the membrane is rinsed after each usage.

Q7: Why Active carbon filter requested for the RO membrane?
A7: Chloride and chlorine content are harmful to the feed water, and the RO membrane is easily damaged as the surface of the RO membrane will be easily oxidized.