Industrial 8040 Brackish Water (BW) RO Membrane Elements

// 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, semiconductor ultrapure water, 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 industrial boiler feed, wastewater reuse, and municipal purification. Achieve 100% of Tier-1 performance at 60% of the cost. Utilizing identical 3-layer polyamide architecture and automated precision rolling designed for brackish water.

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

+

BW

+

400

+

FR

Drop-In Replacement Targets

DATA SOURCE: OEM TECHNICAL BULLETINS

Application Class	DuPont FilmTec™ Target	Toray® / Hydranautics® Target	WANDONG OEM Equivalent
Standard Industrial (BW) Standard Rejection (400 ft²)	BW30-400	TM720D-400 / CPA3	WD-BW-400 MATCH
High-Yield Industrial Max Active Area (440 ft²)	BW30LE-440 / BW30-440i	TM720D-440 / CPA5-LD	WD-BW-440 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.
Fouling-Resistant (FR) Wide 34-mil Feed Spacer	BW30FR-400/34i	LFC3-LD	WD-BW-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 wastewater reuse.
Ultra-Low Pressure (ULP) Energy Saving (150 PSI Test)	XLE-440 / LE-400	TMG20D-400 / ESPA2-LD	WD-ULP-400 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-BW-400	400 (37.2)	10,500 (40.0)	99.5%	28	225 (1.55)
WD-BW-440	440 (40.9)	11,500 (44.0)	99.5%	28	225 (1.55)
WD-BW-400FR	400 (37.2)	10,500 (40.0)	99.5%	34 (Anti-Fouling)	225 (1.55)
WD-ULP-400	400 (37.2)	10,500 (40.0)	99.0%	28	150 (1.03)

* BW/FR Test Conditions: 2000 mg/L NaCl, 15% Recovery, 77°F (25°C), pH 8, 225 PSI.
* ULP Test Conditions: 2000 mg/L NaCl, 15% Recovery, 77°F (25°C), pH 8, 150 PSI.
* 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: Rejection Dynamics

General rule of thumb for polyamide elements: Rejection rates increase with higher ion valence (divalent > monovalent), higher molecular weight, and higher degree of dissociation (pH dependent). Ensure feed water chemistry is properly modeled for precise permeate quality predictions.

// 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-05 / ENGINEERING ANATOMY

Deconstructing the 600 PSI Core.

Industrial water treatment demands robust structural integrity. Explore the 3-layer composite architecture that prevents mechanical failure under continuous hydraulic stress and chemical cleaning.

3-Layer Polyamide Thin-Film Composite RO Membrane Structure

3-Layer Composite

1. Polyamide Ultra-Thin Active Layer

The high-rejection barrier. Achieves 99.5% stable salt rejection, effectively removing dissolved salts, colloids, and organics to produce boiler-grade pure water.

2. 28-mil to 34-mil Feed Spacer

Standard BW models utilize a 28-mil spacer for balanced flow. Our Fouling-Resistant (FR) models upgrade to a 34-mil wide spacer, drastically reducing pressure drop and preventing biological fouling in wastewater reuse applications.

3. Polysulfone Microporous Support

Engineered to withstand 600 PSI of continuous compaction. Tolerates aggressive Clean-In-Place (CIP) protocols across a massive pH 1-13 range without degrading.

4. Interlocking ATD (End-Cap)

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

// MODULE-06 / 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	600 psi (4.14 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	85 gpm (19 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.

Currently Viewing

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.

View SWRO Elements

// MODULE-09 / APPLICATION SCENARIOS

The Industrial Workhorse.

From boiler feed water to zero liquid discharge (ZLD). Our BWRO and FR series are deployed globally in environments demanding absolute reliability and chemical resistance.

Power Plant Boiler Feed Water RO Treatment

Power Generation

Providing ultra-pure boiler feed water to prevent scaling and turbine damage.

Chemical Processing

High chemical tolerance for process water purification and material concentration.

Wastewater Reuse

Our FR (Fouling-Resistant) series utilizes a 34-mil spacer to conquer high-COD effluents.

Microelectronics

The critical pre-treatment barrier before EDI modules for 18.2 MΩ·cm ultrapure water.

// 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 BWRO and FR elements are the beating heart of our own containerized Industrial RO plants deployed across the globe.

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.

WANDONG Industrial RO Skid with 8040 FRP Pressure Vessels

FIELD DEPLOYMENT

WANDONG Turnkey RO Skid

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 600 PSI limit.

Can WANDONG OEM BWRO elements handle high-fouling wastewater?

Yes. For wastewater reuse and high-COD effluents, we strongly recommend our Fouling-Resistant (FR) series. It features a wider 34-mil feed spacer and a specialized hydrophilic coating that drastically reduces biological fouling and extends the time between CIP cleanings.

What is the difference between standard BW and ULP elements?

Standard BW elements operate at 225 PSI to achieve 99.5% rejection, ideal for industrial boiler feed. ULP (Ultra-Low Pressure) elements are engineered to operate at just 150 PSI while maintaining 99.0% rejection. ULP is perfect for relatively clean feed water (like municipal tap water) where minimizing electrical OPEX is the primary goal.

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 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. A formal QC certificate is included in every box.

Direct-Source Factory

Bypass the Middlemen.
Tap into the Source.

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.

50,000m² Manufacturing Base

100% in-house fabrication. FAT (Factory Acceptance Test) available via live video before shipping.

Strict NDA Protection

Your project data and client information are strictly confidential. We act as your silent backend.

// INITIATE PROTOCOL

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Notes & Destination Zip Code

Heavy-Duty 8040 BWRO Elements.

Dual-Track Procurement.Zero Compromise.