RO Membrane for Water Treatment

In water treatment, your reverse osmosis membrane is the heart of the system-its performance directly impacts water quality, energy consumption, chemical usage, and operational costs. Poor membrane selection leads to rapid fouling, scaling, low recovery, and frequent replacements. Our high-performance RO membrane for water treatment delivers 99% salt rejection, enhanced fouling resistance, and long service life-engineered for municipal drinking water, industrial process water, seawater desalination, and advanced wastewater reuse. Compatible with all major RO pressure vessels (DOW/FilmTec™, Hydranautics™, Toray™ form factors), our elements offer OEM-equivalent or superior performance at a better value.

COYON supplies six series of industrial reverse osmosis membranes: ultra-low-pressure reverse osmosis membrane elements, low-pressure high desalination rate reverse osmosis membrane elements, brackish water reverse osmosis membranes, high-pressure anti-fouling membrane elements, seawater reverse osmosis membranes, and household mechanical membrane elements.

Not All RO Membranes Perform the Same-Ours Are Optimized for Real-World Water
* High Salt & Organics Rejection: 99% NaCl rejection ensures consistent permeate quality-even under variable feed conditions.
* Fouling-Resistant Surface: Modified polyamide layer reduces adhesion of colloids, organics, and biofilm.
* Wide pH & Cleaning Tolerance: Operates from pH 2–11; withstands aggressive CIP (cleaning-in-place) protocols.
* Energy-Efficient Design: Lower operating pressure = reduced pump energy (up to 15% savings vs standard elements).
* Consistent Manufacturing: Produced in ISO 9001-certified cleanroom facilities with 100% integrity testing.
* Drop-In Replacement: Exact dimensional match for 400GPD, 8040, 4040, and other industry-standard housings.

1. BWRO Series – Brackish Water Reverse Osmosis Membranes
* Ideal for: Groundwater, surface water, municipal pretreated water
* Key Features:
- Permeate flow: 2,500–10,000 GPD (400–1600 L/h) per 8040 element
- Salt rejection: ≥99%
- Max pressure: 600 psi
- Applications: Drinking water plants, food & beverage, boiler feedwater, industrial process water

2. SWRO Series – Seawater Reverse Osmosis Membranes
* Ideal for: Ocean water, high-TDS brines (>15,000 ppm)
* Key Features:
- Permeate flow: 5,500–8,500 GPD per 8040 element
- Salt rejection: ≥99%
- Max pressure: 1,200 psi (83 bar)
- Boron rejection: Up to 95% (with specialized variants)
- Applications: Desalination plants, island resorts, offshore platforms

3. NF/RO Hybrid Series – For Wastewater Reuse & Softening
* Ideal for: MBR permeate, secondary effluent, hard water
* Key Features:
- High divalent ion rejection (Ca²⁺, Mg²⁺, SO₄²⁻)
- Moderate monovalent rejection (allows partial salt passage for lower osmotic pressure)
- Excellent organic & color removal
- Applications: Industrial water reuse, laundry recycling, cooling tower makeup

Raw water tank → boosting pump → multi-media filter → scale prevention device → precision filter → first-stage high-pressure pump → first-stage RO (CIP) → intermediate water tank → second-stage high-pressure pump → second-stage RO → product water tank

* Municipal Drinking Water: Removing nitrates, arsenic, fluoride, and hardness from groundwater
* Industrial Process Water: High-purity feed for pharmaceuticals, electronics, and power generation
* Food & Beverage: Concentration, demineralization, and ingredient water production
* Seawater Desalination: Coastal communities, resorts, ships, and offshore rigs
* Wastewater Reclamation: Treating MBR or secondary effluent to reuse standards (e.g., irrigation, cooling)
* Boiler Feedwater: Preventing scale and corrosion in high-pressure steam systems

Seamless integration with your existing RO system, our industrial reverse osmosis membranes are designed as direct replacements for leading brands:
* Compatible with DOW FILMTEC™, Hydranautics ESPA/ESNA, Toray TM, LG Chem, and GE membranes
* Standard 8040 (8" x 40"), 4040 (4" x 40"), and 2540 (2.5" x 40") dimensions
* Same O-ring placement, flow restrictor design, and connector type
* No system modification required-simply swap during maintenance
We provide full installation guidelines, startup procedures, and preservation instructions.

* Lab-Validated Performance: Every batch is tested for flux and rejection before shipment
* Global Installations: 20,000+ elements operating in 20+ countries
* 24-Month Warranty: Against manufacturing defects and premature failure
* Free System Audit: Send us your RO data-we'll recommend the optimal membrane and predict lifespan
* Fast Global Shipping: In-stock elements shipped within 48 hours
* Sustainable Packaging: Recyclable materials, minimal plastic use

Get high-rejection, fouling-resistant membranes that last longer and save energy.

Request Free Membrane Selection & Quotation

Q1: How long do RO membranes typically last?

A: With proper pretreatment (cartridge filters, antiscalant, dechlorination) and regular cleaning, most membranes last 3–5 years. Seawater elements may last 2–4 years due to higher stress. We offer a free lifespan calculator based on your feedwater analysis.

Q2: Can I replace a DOW FILMTEC™ membrane with yours?

A: Yes. Our BW30-400 is a direct performance equivalent to DOW BW30-400, with identical dimensions, flow, and rejection specs. Thousands of customers have successfully switched without system changes.

Q3: Do you offer membranes for high-silica or high-organic feedwater?

A: Absolutely. For challenging waters, we recommend our BW30FR-400 (Fouling Resistant) variant with enhanced surface hydrophilicity and smoother topography to reduce organic and colloidal adhesion. Pair it with our antiscalant dosing system for best results.