BW30HR LE Series RO Membrane Specifications – High Rejection Low Energy Anti-Fouling Element

Product Introduction

As a professional supplier offering full-spectrum industrial water treatment solutions built around Liquid Filters, we supply complete high-performance membrane elements for industrial brackish water purification, commercial centralized water supply and medium-scale wastewater reuse projects. Our BW30HR LE Series RO Membrane is an upgraded high-efficiency reverse osmosis membrane optimized for municipal tap water and shallow underground brackish water, integrating three core strengths: high salt rejection, ultra-low energy consumption and strong anti-fouling capacity, fully matching the technical demands of long-running industrial water systems.

Different from basic standard desalination brackish water RO membrane, the BW30HR LE series upgrades the polyamide thin-film composite layer and internal flow spacer structure. As shown in official RO membrane specifications, this product line covers three mainstream sizes: BW30HR LE-4040, BW30HR LE-400/34i and BW30HR LE-400/34, covering small laboratory equipment, medium commercial water machines and large industrial RO systems. For engineering clients seeking balanced performance and low operating cost, this series solves three common pain points of ordinary RO elements: insufficient salt rejection leading to unqualified permeate, excessive pump power consumption raising electricity bills, and frequent chemical cleaning triggered by heavy fouling. The standard spiral wound RO membrane structure fits all universal 4-inch and 8-inch pressure vessels, supporting direct replacement of old membrane elements without overhauling system pipelines or booster pumps.

Working Principle

The separation mechanism of BW30HR LE Series RO membrane element relies on optimized pressure-driven osmosis interception, with targeted upgrades to realize high rejection, low energy and anti-fouling triple advantages. Its cross-linked high-density polyamide active layer forms tighter molecular interception channels, which greatly improves the removal rate of calcium, magnesium scale ions, heavy metals and organic macromolecules to achieve high salt rejection performance. Meanwhile, the membrane surface adopts super-hydrophilic modification to reduce the penetration resistance of water molecules, so rated water yield can be achieved under lower operating pressure to cut energy consumption.

When brackish feed water flows through the element’s internal flow channel, water molecules rapidly pass through the hydrophilic membrane layer to form clean permeate, while dissolved salts and pollutants are trapped and discharged with concentrated water. The specially widened 34mil feed spacer effectively slows down the accumulation of suspended solids and organic colloids, weakening concentration polarization on the membrane surface and endowing the element with outstanding anti-fouling RO membrane performance. Unlike conventional industrial RO membrane that sacrifices either rejection or energy efficiency, BW30HR LE strikes a perfect balance, maintaining stable flux and effluent quality under long-term continuous operation with fluctuating raw water pollution levels.

Technical Parameters

All core data below are official verified RO membrane specifications for BW30HR LE full series:

• Product Series: BW30HR LE Series High Rejection Low Energy Anti-Fouling RO Membrane

• Available Models: BW30HR LE-4040, BW30HR LE-400/34i, BW30HR LE-400/34

• Structure: Standard industrial spiral wound RO membrane

• Nominal Active Membrane Area: 400 sq. ft (37.2 m²) for 8040 size, 90 sq. ft (8.4 m²) for 4040 size

• Stabilized High Salt Rejection: ≥99.7%

• Standard Operating Pressure: 110–150 psi (7.6–10.3 bar)

• Maximum Allowable Operating Pressure: 600 psi (4.14 MPa)

• Continuous Operating Temperature: ≤113°F (45°C)

• Continuous Operation pH Range: 2.0 – 11.0

• Short-Term Chemical Cleaning pH Range: 1.0 – 13.0

• Maximum Permissible Feed Water SDI: 5

• Single Element Maximum Pressure Drop: 15 psig (1.0 bar)

• Core Product Features: Higher salt rejection than basic RO elements, ultra-low energy operation, enhanced anti-fouling structure

Product Advantages

1. Superior high stable salt rejection

   As a premium high-rejection brackish water RO membrane, BW30HR LE series delivers a minimum stabilized salt rejection rate of 99.7%, far exceeding standard rejection membrane products. It thoroughly intercepts scale-forming ions, heavy metals and trace organic pollutants, producing ultra-clean permeate that meets strict industrial and commercial drinking water standards.

2. Ultra-low energy consumption for long-term cost savings

   The hydrophilic optimized membrane surface reduces water molecule penetration resistance, enabling rated water production under lower operating pressure. Compared with ordinary high-rejection RO elements, it can reduce booster pump power by 25%–35%, cutting daily electricity expenditure for 24-hour continuous running water treatment stations and factories.

3. Reinforced anti-fouling performance to reduce maintenance frequency

   Equipped with wide 34mil streamline flow spacers and smooth hydrophilic membrane surface, this anti-fouling RO membrane slows organic and suspended solid accumulation. The interval between acid-alkali chemical cleaning cycles is extended by nearly 50%, lowering labor and chemical maintenance costs for system operators.

4. Full size range for all matching scenarios

   The complete product line covers 4-inch small BW30HR LE-4040 and 8-inch large BW30HR LE-400 series, adapting to small experimental water machines, commercial water vending stations and large industrial brackish water desalination projects. Standard dimensions support seamless replacement of old membrane elements without equipment modification.

5. Wide pH tolerance for thorough cleaning

   It tolerates strong acid and alkaline cleaning agents within pH 1.0–13.0, which can completely dissolve inorganic scale and organic fouling deposits, quickly restoring membrane flux and separation efficiency, and effectively extending overall RO membrane lifespan.

6. Universal compatibility with mainstream RO systems

   Standard spiral wound design matches all common fiberglass and stainless steel pressure vessels on the market. Engineering teams can directly assemble BW30HR LE elements into new water treatment equipment or replace outdated low-performance membranes on existing lines with minimal renovation work.

Application Fields

The BW30HR LE series high performance RO elements fit a wide array of water treatment scenarios spanning industrial, commercial and municipal sectors. In industrial brackish water desalination projects, the membrane works as the core filter to remove excess mineral salts from underground brackish water, generating qualified boiler feed water and production process water while keeping daily power costs low via its low-energy operation design. For commercial water vending stations serving residential communities, its consistent 99.7% salt rejection guarantees safe, pure drinking water for residents, and the anti-fouling characteristic cuts frequent shutdown maintenance required by ordinary membranes. It is also widely adopted in centralized pure water supply systems for hotels, campuses and office buildings that serve large crowds, delivering stable water quality and reducing daily management workload for property staff. Within small and medium food and beverage factories including dairy, juice and bakery production lines, this membrane supplies high-purity process water free of heavy metals and scaling ions to ensure stable finished product taste and quality. Besides, municipal deep tap water purification projects also rely on BW30HR LE elements to eliminate pipe network residual byproducts, calcium and magnesium hardness substances, and trace organic pollutants, upgrading regular tap water into safe drinking water that satisfies public supply standards. For light industrial medium-concentration wastewater recycling projects with moderate pollution load, its balanced anti-fouling and high rejection features maintain long-term stable water recovery efficiency, helping manufacturers cut fresh water intake and meet local environmental protection discharge requirements.

Quality Standards

Every BW30HR LE series RO membrane element is manufactured under ISO 9001:2015 standardized quality control, with full batch testing of all indexes listed in RO membrane specifications, including flux, salt rejection, pressure resistance and anti-fouling performance. All raw materials comply with U.S. FDA food contact safety standards, and core models pass NSF drinking water safety certification. Complete factory test reports, material traceability documents and specification datasheets are provided for engineering design and customer factory audits. Finished membranes are vacuum-sealed with protective liquid to avoid dry damage and secondary pollution during transportation and storage.

Future Prospects

Against the backdrop of rising industrial electricity costs and stricter industrial water discharge standards, the market demand for BW30HR LE series high-rejection low-energy reverse osmosis membrane will maintain steady growth in the next 5–10 years. Traditional basic brackish water membranes can no longer satisfy enterprises’ dual demands of high water quality and low energy consumption, while high-end anti-fouling single-function membranes have higher procurement costs. The BW30HR LE series integrates three core advantages into one product, occupying a key mid-to-high-end market segment for brackish water treatment.

Our R&D team will continuously optimize the hydrophilic polyamide formula and flow channel structure of BW30HR LE series, further lifting salt rejection rate and anti-fouling ability while maintaining ultra-low energy consumption, extending RO membrane lifespan and lowering customers’ full-cycle operation expenditure. In addition, its energy-saving feature fits global low-carbon manufacturing policies, and the product will gain wider promotion in factory water system energy-saving renovation and new industrial water treatment construction projects.

Summary

BW30HR LE Series RO Membrane, with complete official RO membrane specifications, is a premium multi-functional brackish water RO membrane developed to solve the three major defects of ordinary RO elements: insufficient salt rejection, high energy consumption and easy fouling. Through upgraded high-density polyamide separation layer and wide anti-fouling flow spacer design, it achieves the perfect combination of high desalination efficiency, low-pressure energy-saving operation and long-cycle anti-fouling performance.

Compared with standard rejection basic RO membranes, the BW30HR LE series brings triple value: cleaner permeate water quality, remarkable electricity cost savings and less frequent maintenance. It covers all mainstream commercial and industrial brackish water treatment scenarios with complete size options. For engineering companies and factory operators pursuing balanced high performance and controllable long-term operating costs, BW30HR LE series anti-fouling low-energy RO elements are a cost-effective long-term solution.

FAQ

Related Products

Low Pressure RO Membrane

Environmental protection RO membrane element anti-pollution

• ESPA1-4040 Seawater Membrane Reverse Osmosis