+86-513 8659 8187
Brackish Water RO Membrane Elements BW-4021 Wholesale
Home / Products / Commercial RO Membrane / Brackish Water RO Membrane For Commercial / Brackish Water RO Membrane Elements BW-4021

Brackish Water RO Membrane Elements BW-4021

BW-4021 is a brackish water reverse osmosis membrane independently produced by BANGTEC, specialized in desalination treatment for common water sources such as surface water, groundwater, and municipal water, with a recommended application condition of salt content less than 5000mg/L, ensuring stable desalination efficiency in such water quality environments. Its application scope is highly targeted: it is widely suitable for water treatment in residential areas and office buildings where raw water has high TDS (total dissolved solids) content; more notably, it meets the strict water quality requirements of scenarios needing ultrapure water, such as medical rooms and small laboratories, providing reliable purification support for professional fields with precise water demand.

+86-513 8659 8187

[email protected]

Category Introduction

Brackish Water Ro Membrane For Commercial is a reverse osmosis membrane product designed specifically for industrial and large-scale water treatment systems. It is primarily used for the efficient treatment of brackish water, addressing common membrane fouling issues such as colloidal deposition, bioadhesion, organic adsorption, and inorganic salt scaling. Through material optimization, structural optimization, and surface modification, this product enhances its anti-fouling properties and long-term stability, ensuring efficient separation and purification capabilities in complex water environments. The core advantage of Brackish Water Ro Membrane For Commercial lies in its targeted engineering design, which significantly reduces maintenance requirements and extends service life, making it suitable for a variety of commercial water treatment applications.

Product Information

Model Stable Rejection  Min Rejection Permeate  Flow Effective Membrane Area
(%) (%) GPD(m³/d) ft2(m2)
BW-4021 99.6 99.5  950(3.6) 36(3.3)
Testing Conditions Operating pressure 225psi( 1.55MPa)
Test solution temperature 25 ℃
Test solution concentration (NaCl) 2000ppm
PH value  7-8
Recovery rate of a single membrane element 8%
Flow range of a single membrane element ±15%
Operating Conditions & Limits Maximum operating pressure 600 psi(4.14MPa)
Maximum temperature 45 ℃
Maximum feedwater flow Maximum feedwater flow: 16gpm(3.6 m3/h)
Maximum feedwater flow SDI15 5
Maximum concentration of free chlorine: <0.1ppm
Allowed pH range for chemical cleaning 3-10
Allowed pH range for feedwater in operation 2-11
Maximum pressure drop per element 15psi(0.1MPa)
Message Feedback

About Bangtec

As China Brackish Water RO Membrane Elements BW-4021 Manufacturer and Brackish Water RO Membrane Elements BW-4021 Factory, Bangtec was founded under the leadership of Zhao Huiyu, a high-level talent in Jiangsu Province and a doctoral graduate from the Chinese Academy of Sciences (CAS), Jiangsu Tuobang Environmental Protection Technology Co., Ltd. has brought together a team of professionals, including multiple overseas and domestic doctors, returned high-level talents, and top-tier experts in the industry. The company is committed to the industrialization development of high-end nanofiltration membrane products and the promotion and application of overall solutions. Its product range covers a series of innovative products such as high, medium, and low-pressure reverse osmosis membranes, anti-pollution reverse osmosis membranes, and special separation nanofiltration membranes.

The company has successively obtained various domestic and international certifications, including the Triple Standards Integration Management System (namely ISO9001 Quality Management System, ISO14001 Environmental Management System, and ISO45001 Occupational Health and Safety Management System certifications), CE certification, and Jiangsu Provincial Water-related Approval. It also holds a number of domestic and international invention patents. With three R&D institutions established overseas, the company is able to continuously develop new products and services. The performance of the newly developed products has reached the international leading level, providing innovative products and solutions for multiple fields such as photovoltaics, lithium batteries, iron and steel, electric power, chemical industry, printing and dyeing, and coal chemical industry.

Adhering to the core values of "Faithful in Words, Earnest in Deeds, and Striving for Perfection", the company aims to provide customers with the most suitable products and solutions through continuous technological innovation.
Jiangsu Bangtec Huachuang Sci-tech Co., Ltd.

Honor

  • Innovation patent certificate
  • CE
  • FDA
  • ISO9001:2015
  • ISO14001:2015

Latest Updates

  • What Is an Industrial RO Membrane?
    An Industrial RO Membrane is the core separation element in water treatment systems, widely applied in seawater desalination, industrial wastewater reuse, ultrapure water production, and food and beverage concentration. As a China Industri...

    Jun 26, 2026

  • How to choose a Domestic RO Membrane?
    01 For high TDS areas, choose High Rejection Membrane with salt rejection rate ≥98.5%, reducing outlet TDS below 50ppm. 02 High Flow Membrane (400-800GPD) suits tankless systems, delivering 1.0-1.5L/min output flow. 03 Ultra Low Pressu...

    Jun 15, 2026

  • What are the key factors in selecting Commercial RO Membranes?
    What: Core Selection Criteria for Commercial RO Membranes Commercial RO membrane selection revolves around three core parameters: daily production capacity, salt rejection rate, and operating pressure. Products from Jiangsu Bangtec Huachua...

    Jun 15, 2026

  • What Are the Core Technical Principles and Selection Factors of Industrial RO Membrane?
    Key Takeaways Industrial RO Membrane serves as the core separation element in water treatment systems, with 4040 and 8040 being the two mainstream specifications. The 4040 model suits small to medium systems processing 1-5 tons per hour, w...

    Jun 15, 2026