As core deep purification component of industrial pure water production lines, Coalescing Filter supporting Reverse Osmosis membrane series, also known as RO membrane, efficiently removes dissolved salts, heavy metal ions, colloids and microorganisms from raw water. Each standard RO membrane element adopts composite polyamide thin-film material, delivering stable high desalination rate under long continuous running cycles. Before raw water enters the RO membrane module, front-stage pre-filtration with High Flow Filter and matching UF membrane is mandatory to intercept large suspended solids and colloids, slowing down fouling speed and extending service life of the Reverse Osmosis membrane. All our water treatment products are centralized on Water Filter Element (RO & UF Membrane) product page, supporting complete customized water purification system matching with oil & gas gas filter element series for multi-industry integrated projects.
Working Principle of BW RO Membrane Element
Under rated operating pressure, raw brackish water flows tangentially across the surface of the RO membrane. Small pure water molecules penetrate the dense polyamide film layer and flow into the central permeate tube to form qualified pure water; salt ions, organic pollutants and bacteria cannot pass through the Reverse Osmosis membrane and are discharged along concentrated water pipelines. The spiral winding design of each RO membrane element maximizes effective filtration area within limited membrane housing space, improving unit water output and reducing overall equipment footprint for factory pure water stations.
Main Technical Index of BW Series
Standard Sizes: 4040 RO, 8040 RO membrane element
Stable Salt Rejection Rate: ≥99.6%
Max Continuous Operating Pressure: 1.6MPa
Stable Temperature Range: 5℃ ~ 45℃
Applicable Raw Water: Brackish water, municipal tap water, boiler make-up water
All BW RO membrane element pass strict pressure resistance and salt rejection testing before delivery, fully matched with complete industrial water treatment racks and EPC equipment. Anti-fouling BW-FR variant Reverse Osmosis membrane is available for high-turbidity wastewater reuse projects.
Five Core Advantages of BW RO Membrane
1 Stable Ultra-high Desalination Performance
Premium polyamide Reverse Osmosis membrane maintains consistent salt rejection without long-term performance attenuation.
2 Large Single Membrane Water Yield
Oversized effective area of each RO membrane element reduces total membrane quantity required for production lines.
3 Anti-fouling Hydrophilic Surface
Special modified coating on the RO membrane reduces organic dirt adhesion and simplifies regular chemical cleaning.
4 Wide Industrial Compatibility
Suitable for electronics, pharmaceutical, food, power plant boiler pure water preparation.
5 Strong Chemical Tolerance
Resist weak acid & weak alkali cleaning agents without permanent membrane layer damage.
Typical Application Fields
BW Reverse Osmosis membrane is widely applied in electronic semiconductor ultra-pure water, pharmaceutical preparation water, food beverage processing and thermal power boiler water supply. Matched with front-end UF membrane module and high flow filter, it forms full multi-stage raw water pretreatment & deep desalination solution to meet strict industrial water quality standards.
Full BW Series RO Membrane Element Model List
LF-BW-4021, LF-BW-4040, LF-BW-8040, LF-BW-8040-400, LF-BW-8040-440, LF-BW-8040FR
Other Related Products
PVDF UF Ultrafiltration Membrane Module
FAQ About Industrial RO Membrane
Q1 What pretreatment is required before RO membrane element?
A1 Equip high flow filter and UF membrane module to remove colloids and suspended solids and protect Reverse Osmosis membrane.
Q2 What is standard salt rejection of BW RO membrane?
A2 Conventional BW series Reverse Osmosis membrane stable salt rejection reaches over 99.6% under standard test conditions.
Q3 What cleaning chemicals can be used for fouled RO membrane element?
A4 Only mild acid and mild alkaline dedicated cleaning fluid are allowed; strong corrosive reagents will permanently damage the polyamide membrane layer.
Q4 Can RO membrane run over 45℃ long-term?
A4 Continuous working temperature cannot exceed 45℃, high temperature causes irreversible aging of Reverse Osmosis membrane.
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