Seawater Desalination (SWRO) Membrane Elements (1200 PSI)

// MODULE-02 / PROCUREMENT STRATEGY

Dual-Track Procurement.
Zero Compromise.

As a global turnkey integrator, we understand that every project has different CapEx limits. We offer two distinct procurement tracks to secure your supply chain.

Zero-Tolerance Projects

100% Genuine Tier-1 Brands

For critical infrastructure, Middle East desalination, and zero-tolerance environments where brand specification is mandatory. We leverage our massive integrator purchasing power to supply factory-fresh elements directly from global warehouses.

DuPont™ Toray® Hydranautics® SUEZ® LG Chem

CapEx Optimization

WANDONG OEM Equivalents

For coastal mining camps and island resorts. Achieve 100% of Tier-1 performance at 60% of the cost. Utilizing identical 3-layer polyamide architecture and automated precision rolling designed for high-salinity seawater.

WANDONG MEMBRANE

// MODULE-03 / SPECIFICATION MATRIX

Universal 8040 Compatibility.

Standardized testing conditions per ASTM D4516. Data represents typical values for WANDONG OEM equivalents.

WANDONG Nomenclature

WD

+

SW

+

400

+

FR

Drop-In Replacement Targets

DATA SOURCE: OEM TECHNICAL BULLETINS

Application Class	DuPont FilmTec™ Target	Toray® / Hydranautics® Target	WANDONG OEM Equivalent
Standard Seawater High Rejection (400 ft²)	SW30HRLE-400	TM820V-400 / SWC5	WD-SW-400HR MATCH
High-Yield Seawater Max Active Area (440 ft²)	SW30XLE-440i	TM820V-440 / SWC6	WD-SW-440HR MATCH UPGRADE OPTION Retrofit Advantage: Upgrade from standard 400 ft² to 440 ft² to gain a 10% increase in permeate flow without changing your high-pressure pump.
Ultra-High Flux Seawater Max Permeate Flow (9,900 GPD)	-	TM820V-440 (Toray High-Flux)	WD-SW-440UHF MATCH
Fouling-Resistant SWRO Wide 34-mil Feed Spacer	SW30HRLE-370/34i	SWC5-LD	WD-SW-400FR MATCH UPGRADE OPTION Retrofit Advantage: Replace standard 28-mil elements with our 34-mil FR series to drastically reduce biological fouling and extend CIP cleaning intervals in harsh coastal waters.
Ultra-High Rejection 99.85% Rejection (Boron Removal)	SW30XHR-400i	TM820K-400 / -	WD-SW-400XHR MATCH

WANDONG OEM Verified Parameters

Model	Active Area ft² (m²)	Permeate Flow GPD (m³/d)	Nominal Rejection	Spacer Thickness (mil)	Test Pressure PSI (MPa)
WD-SW-400HR	400 (37.2)	7,500 (28.4)	99.8%	28	800 (5.52)
WD-SW-440HR	440 (40.9)	8,250 (31.2)	99.8%	28	800 (5.52)
WD-SW-440UHF	440 (40.9)	9,900 (37.5)	99.8%	28	800 (5.52)
WD-SW-400FR	400 (37.2)	8,200 (31.0)	99.8%	34 (Anti-Fouling)	800 (5.52)
WD-SW-400XHR	400 (37.2)	6,000 (22.7)	99.85%	28	800 (5.52)

* SW Test Conditions: 32000 mg/L NaCl, 8% Recovery, 77°F (25°C), pH 8.
* UHF Test Conditions: 32000 mg/L NaCl, 5 mg/L Boron, 8% Recovery, 77°F (25°C), pH 7.
* Performance Disclaimer: Data represents typical values and does not constitute a guaranteed minimum. Actual field performance may vary depending on feed water characteristics and system design.

Process Engineer's Note: Operational Dynamics

Permeate flow decreases by approximately 3% for every 1°C drop in feed water temperature below 25°C due to increased water viscosity. When designing for cold-water marine environments, ensure a 10-15% flux margin in your high-pressure pump capacity.

// MODULE-04 / MECHANICAL COMPATIBILITY

100% Drop-In Ready.

No retrofitting required. WANDONG OEM 8040 elements adhere strictly to the global dimensional standard. They slide perfectly into any standard 8.0" FRP pressure vessel (e.g., Codeline, Protec, ROPV) utilizing your existing Anti-Telescoping Devices (ATDs) and interconnectors.

Physical Specifications

Element Wet Weight

16.0 kg (35.2 lbs)

Permeate Tube Extension

1.05 inch (26.7 mm)

Outer Wrap

Fiberglass Reinforced

Membrane Type

Polyamide Thin-Film Composite

40.0" Standard Length

7.9" Outer Diameter

1.125" Permeate Tube ID

8040 ELEMENT

A: 40.0" (1016 mm)

B: 7.9" (201 mm)

// MODULE-06 / ENGINEERING ANATOMY

Deconstructing the 1200 PSI Core.

Seawater desalination demands uncompromising structural integrity. Explore the 3-layer composite architecture that prevents mechanical failure under severe hydraulic stress.

3-Layer Polyamide Thin-Film Composite RO Membrane Structure for SWRO

3-Layer Composite

1. Polyamide Ultra-Thin Active Layer

The true separation barrier. Featuring an extremely high cross-linking density and uniform thickness without pinholes. This layer determines the element's 99.85% salt rejection and superior chemical resistance against biological degradation.

2. Polysulfone Microporous Support

A highly permeable intermediate layer with a pore size of approximately 150 Angstroms. It provides critical structural support for the ultra-thin polyamide layer, preventing it from collapsing under 1200 PSI pressure.

3. PET Non-Woven Reinforcement

The foundation of mechanical strength. Constructed from rigid, non-shedding polyester fibers, ensuring the entire composite membrane remains perfectly flat and stable during high-velocity cross-flow operation.

4. Interlocking ATD (End-Cap)

Eliminates traditional O-ring extrusion risks. The Anti-Telescoping Device prevents permeate contamination even under severe high-pressure surges typical in SWRO startup sequences.

// MODULE-07 / OPERATING LIMITS

Comprehensive Operating Limits.

Strict adherence to these parameters ensures optimal performance and validates the 12-month limited warranty.

Membrane Type	Polyamide Thin-Film Composite
Maximum Operating Temperature	113°F (45°C)
Maximum Operating Pressure	1200 psi (8.28 MPa)
Max Pressure Drop (Single Element)	15 psi (0.10 MPa)
Max Pressure Drop (Pressure Vessel)	50 psi (0.34 MPa)
pH Range, Continuous Operation	2 - 11
pH Range, Short-Term Cleaning (30 min)	1 - 13
Maximum Feed Flow Rate	75 gpm (17 m³/h)
Maximum Feed Silt Density Index (SDI)	SDI 5
Maximum Feed Turbidity	1 NTU
Free Chlorine Tolerance	< 0.1 ppm

General Handling & Preservation

Keep elements moist at all times after initial wetting.
To prevent biological growth during prolonged system shutdowns, immerse elements in a preservative solution (e.g., 1% SMBS).
The customer is fully responsible for the effects of incompatible chemicals and lubricants on elements.

System Startup Protocol

To prevent hydraulic shock and membrane damage during initial startup, shutdown, or cleaning, strict adherence to the following sequence is mandatory:

0. Pre-treatment Verification: Ensure all upstream multi-media filters and chemical dosing systems are fully commissioned and flushed before loading RO elements.
1. Feed pressure should be increased gradually over a 30-60 second timeframe.
2. Cross-flow velocity at set operating point should be achieved gradually over 15-20 seconds.
3. Permeate obtained from the first hour of operation must be discarded.

// MODULE-08 / SELECTION GUIDE

TDS-Based Element Selection.

Selecting the correct membrane series based on feed water Total Dissolved Solids (TDS) is critical for minimizing energy consumption and preventing premature fouling.

TDS < 2,000 ppm

Tap Water / Light Brackish

ULP Series (Ultra-Low Pressure)

Operates at an extremely low 150 PSI, drastically reducing electrical OPEX while maintaining 99.0% rejection. Ideal for municipal purification.

View ULP Elements

TDS < 10,000 ppm

Brackish Water / Wastewater

BW & FR Series (Standard/Fouling-Resistant)

The industrial standard operating at 225 PSI. Use the FR series (34-mil spacer) for high-COD wastewater reuse to prevent biological fouling.

View BW Elements

TDS > 10,000 ppm

Seawater / High Salinity

SWRO Series (Seawater RO)

Engineered for extreme conditions. Withstands up to 1200 PSI to overcome massive osmotic pressure, delivering 99.8% rejection.

Currently Viewing

// MODULE-09 / APPLICATION SCENARIOS

Engineered for the Extreme.

Where standard RO elements fail, our SWRO series thrives. Deployed globally in environments demanding absolute reliability and zero downtime.

Offshore Oil Rig Seawater Desalination Plant

Offshore & Marine

Compact footprint, high-vibration tolerance for oil rigs and marine vessels.

Coastal Power Plant SWRO Boiler Feed Water System

Power Generation

Providing ultra-pure boiler feed water from coastal seawater intakes.

Island Resort Containerized Seawater Desalination Plant

Island Resorts

Ensuring uninterrupted, WHO-compliant drinking water for luxury hospitality.

Municipal SWRO

High-yield elements designed to minimize CapEx in large-scale public infrastructure.

// MODULE-10 / FACTORY & INVENTORY

Massive Inventory.
Global Dispatch.

We are not a trading company. WANDONG ENVIRO operates a heavy-duty manufacturing base and maintains a massive inventory of both Tier-1 (DuPont/Toray) and OEM elements. When your plant faces a critical shutdown, we execute emergency air-freight dispatches within 48 hours.

ISO 9001 & ISO 14001 Certified Facility

10,000+ Elements in Standing Stock

VIP Wholesale Rates with DHL/FedEx

Automated RO Membrane Rolling Production Line

Massive Warehouse Stock of 8040 RO Membranes

RO Membrane Quality Control and Vacuum Testing

// MODULE-11 / PROVEN IN THE FIELD

Powered by WANDONG.

We don't just sell components; we build the heavy-duty systems that rely on them. Our SWRO elements are the beating heart of our own containerized desalination plants deployed across the Middle East, Africa, and Southeast Asia.

The Integrator's Advantage

Because we use these exact membranes in our own $500,000+ EPC projects, they undergo rigorous internal quality control that pure trading companies simply cannot match. We stake our entire plant's performance on these elements.

FIELD DEPLOYMENT

WANDONG Containerized SWRO Plant

Showcasing the 8040 FRP pressure vessels loaded with our membranes.

// MODULE-12 / THE ENGINEER'S UNBOXING

Built for the Field.
Delivered with Certainty.

We don't just ship a plastic tube. We deliver a risk-free deployment experience engineered for remote sites and harsh environments.

Industrial-Grade Traceability

High-contrast waterproof labels with exact specs, batch numbers, and a unique serial number (S/N). Matched to our OEM database to eliminate gray-market risks. No guessing for your field team.

QC Certificate & Guide Inside

Open the box and find the hardcopy QC Pass Certificate and CIP cleaning guide right on top. Out-of-the-box trust that saves your engineers from digging through email threads.

Export-Grade Preservation

Vacuum-sealed in heavy-duty moisture-barrier foil with a 1% Sodium Metabisulfite (SMBS) preservative solution, encased within rigid telescopic cartons. Engineered to resist harsh global transit, ensuring a secure 12-month shelf life under proper storage.

// MODULE-13 / LOGISTICS MATRIX

Optimized for Global Transit.

We speak the language of freight forwarders. CBM optimized for both rapid air-freight and mass FCL sea-freight.

Single 8040 Carton

Dimensions (L×W×H)

~1050 × 220 × 220 mm

Gross Weight

~16.5 kg (36.3 lbs)

Net Weight

~14.5 kg (31.9 lbs)

Volumetric Weight

~10.16 kg (Air-Freight)

* Values are industry-standard approximations including heavy-duty export packaging.

Standard Pallet

25 pcs

EUR Pallet (1.2x1.0m), Shrink-wrapped

20ft Container

400 pcs

FCL Loading Capacity (16 Pallets)

// MODULE-14 / GLOBAL O&M SUPPORT

Direct Access to Senior Process Engineers.

Don't let improper CIP protocols destroy your new elements. Our clients get direct WhatsApp and Email access to our senior engineers for fouling diagnostics, acid/alkaline cleaning formulas, and step-by-step replacement guidance.

CIP Formulas Fouling Diagnostics 24/7 Standby

Chat with Engineer Email Support Desk

// MODULE-15 / TECHNICAL FAQ & WARRANTY

Hardcore FAQ.
Engineering-Grade Answers.

What is your warranty policy for OEM elements?

We provide a strict 12-Month Limited Warranty against manufacturing defects.

Warranty Void Conditions:
As an engineering firm, we enforce industrial standards. The warranty is immediately voided if failure is caused by improper pre-treatment (Feed SDI > 5), exposure to oxidative chemicals (Free Chlorine > 0.1ppm), or operation beyond the 1200 PSI limit.

Can WANDONG OEM SWRO elements handle 1200 PSI?

Yes. Our SWRO series is manufactured with a high-density polyamide active layer and reinforced fiberglass outer shell, specifically engineered to withstand up to 1200 PSI (8.28 MPa) of continuous operating pressure, making them perfect drop-in replacements for DuPont FilmTec SW30 series.

How do I choose between 400 ft² and 440 ft² active area?

The 400 ft² element uses a thicker feed spacer (28-34 mil), making it the industry standard for balanced flow and fouling resistance in typical seawater. The 440 ft² element utilizes a thinner spacer to maximize membrane area and permeate flow, which is ideal for reducing CapEx in large municipal plants with very clean, highly pre-treated seawater intakes.

Are your OEM elements compatible with my existing pressure vessels?

Absolutely. Our 8040 elements adhere strictly to the 8.0" x 40" global dimensional standard. They fit perfectly into any standard FRP pressure vessel (e.g., Protec, Codeline, ROPV) without any modifications to your existing ATDs or interconnectors.

My system is down. How fast can you ship via air-freight?

For standard 8040 elements in stock, we execute emergency DHL/FedEx dispatches within 48 hours. Elements typically arrive globally in 3-7 days, enabling factory operators to immediately restore their core production lines.

How do you guarantee the quality of your OEM SWRO membranes before shipping?

Every single WANDONG OEM element undergoes rigorous testing at our 50,000m² ISO 9001 facility. We perform 100% vacuum decay testing for mechanical integrity and batch-test performance (salt rejection and flow rate) according to ASTM D4516 standards at 800 PSI. A formal QC certificate is included in every box.

// MODULE-16 / INITIATE PROTOCOL

YOUR 50,000m²
OEM SUPPLY BACKEND.

Secure your global supply chain with factory-direct economics. Whether you need a single emergency pallet or a 20ft container for a mega-plant, our engineers will provide a precise drop-in replacement proposal within 1 hour.

1h

INITIAL RESPONSE

1-ON-1

CUSTOM PROPOSAL

$0

CONSULTATION FEE

// SECURE YOUR SUPPLY CHAIN

Request Dispatch & Pricing

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Target Part Number *

Quantity *

Raw Water Report or Old Specs (Optional)

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Notes & Destination Zip Code

Not sure which model fits? We provide comparative proposals showing exact CapEx and OPEX differences.

AVG. RESPONSE: < 4 HRS · NDA AVAILABLE ON REQUEST

Heavy-Duty 8040 SWRO Elements.

Dual-Track Procurement.Zero Compromise.