Fujian Huamo Technology Co., Ltd. is one of the most reliable manufacturers and suppliers of saltwater ro membrane element in China. If you're going to wholesale bulk saltwater ro membrane element made in China, welcome to get catalog and price list from our factory. All custom made products are with high quality and competitive price. Also, OEM service is available.
Product Details
The Saltwater RO Membrane Element is designed for 8040 seawater desalination systems requiring high-capacity and high-stability operation. It enables effective separation of dissolved salts and trace impurities from saltwater, producing consistently low-TDS permeate. Built for high salinity feed conditions, the membrane structure is optimized to withstand strong osmotic pressure in large-scale RO trains. The Saltwater RO Membrane Element supports stable hydraulic performance even under variable seawater quality and temperature fluctuations. Its industrial-grade construction ensures durability and reduced performance degradation over long operating cycles. It is suitable for desalination plants that demand continuous freshwater output with strict quality control.
Technical Specifications
|
Parameter |
Value |
|
Membrane Type |
Saltwater RO Membrane Element |
|
Membrane Material |
Thin Film Composite Polyamide |
|
Configuration |
Spiral Wound |
|
Stabilized Salt Rejection |
Up to 99.8% |
|
Minimum Salt Rejection |
Up to 99.7% |
|
Maximum Operating Pressure |
83 bar (1,200 psi) |
|
Maximum Operating Temperature |
45°C (113°F) |
|
pH Range (Continuous Operation) |
2–11 |
|
pH Range (Chemical Cleaning) |
1–13 |
|
Maximum Feed SDI15 |
5.0 |
|
Free Chlorine Tolerance |
<0.1 ppm |
|
Available Sizes |
8040 |
Membrane Performance
The saltwater RO membrane element is engineered to deliver high desalination efficiency in systems processing seawater, brine, and other high-TDS water sources. Its high rejection membrane chemistry helps reduce salt passage while maintaining stable freshwater production.
The membrane is commonly selected for applications requiring reliable desalination performance and long-term operational stability.
Intended Infrastructure Environments
- Megawatt-capacity municipal seawater reverse osmosis (SWRO) facilities.
- Industrial brine concentration, mining water recovery, and ZLD wastewater plants.
- Heavy utility installations, including power plant boiler makeup treatment loops.
- Decentralized island supply infrastructure and coastal industrial estate water grids.
FAQ
Q1:What is the benefit of choosing an 8040 element over multiple smaller 4040 elements for large water plants?
A:For commercial and municipal water treatment plants, using standard 8040 elements drastically reduces total cost of ownership (TCO). A single 8040 element provides roughly four times the active filtration area of a compact 4040 element. This scaling allows engineering teams to design high-volume desalination racks with fewer high-pressure vessels, fewer manifold connection seals, and reduced structural piping layouts, simplifying installation and minimizing long-term O&M leak risks.
Q2.What is the primary cause of pressure drop spikes across a 7-element RO vessel, and how does this design help?
A:In a standard 7-element pressure vessel, the tail-end elements experience the highest brine concentration and lowest cross-flow velocity, making them prime targets for mineral scaling and bio-fouling that spike the system differential pressure. Our SW-8040 element utilizes an open, thicker-mesh feed spacer layout. This design lowers initial restriction and boosts cross-flow cleaning efficiency, keeping overall pressure drop across the entire multi-element tube within safe operational limits.
Q3.Can seawater RO membranes be chemically cleaned?
A:Yes. The membrane can typically be cleaned using approved acidic and alkaline cleaning solutions within the recommended pH range specified by the manufacturer.