Industrial Brackish Water Desalination Reverse Osmosis Membrane Elements
Jozzon JBW series four-inch brackish water desalination membrane elements (JBW-4040, JBW-4040-HF) adopt dry storage and fiberglass winding technology. They are designed for small and medium-sized systems with poor influent water quality and high water production requirements.
Available Documentations
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Premium 4-Inch BW 4040 RO Membrane for Challenging Feed Water
JOZZON's 4-inch brackish water desalination membrane elements can meet various customer needs and are suitable for systems with slightly poor feed water quality and high product water quality requirements. These membrane elements are dry-type with a fiberglass-wound outer shell, capable of withstanding higher operating pressures and suitable for multi-element systems.
Applied Industries
Food & Beverage Processing: Pure process water preparation and ingredient water polishing. Pharmaceutical & Medical Systems: Pretreatment loops for purified water (PW) and ultrapure systems. Power Generation & Boiler Feed Water: Demineralization and high-pressure boiler feed polishing. Commercial & Industrial Water Stations: Surface and well water desalination, commercial drinking water stations, and industrial wastewater recycling.
Why Choose JOZZON BW 4040
1. Dry Membrane Element for Easy Storage and Transportation
The dry preservation process eliminates the need for soaking in antiseptic fluid, and there is no risk of microbial growth during storage and transportation, and the flushing time before startup is shorter.
2. Fiberglass Casing Wrapped with Excellent Pressure Resistance
The outer layer is reinforced with fiberglass reinforced plastic (FRP) winding, which can withstand higher operating pressure, is suitable for multi-component series systems, and has reliable structural strength.
3. Adapt To Poor Incoming Water Quality
It is specially designed for surface water, groundwater and highly polluted water sources with a salt content of less than 5000ppm and large fluctuations in water quality. It has good water inlet adaptability.
4. Meet High-yield Water Quality Requirements
It can still maintain stable desalination performance even when the incoming water quality is low, meeting the strict standards for pure water or ultrapure water in the food, medicine, electric power and other industries.
5. High Salt Rejection
Delivers consistent desalination performance with a salt rejection rate of 99.3%–99.5%, ensuring high-quality permeate for industrial processes.
6. Industrial-Grade Reliability
Manufactured with strict quality control for continuous operation in demanding industrial water treatment systems.

Available Models
|
Membrane Element Model |
Description |
Effective Membrane Area ft2 (m2 ) |
Water Production Flow Rate GPD (m³/d) |
Stable Desalination Rate (%) |
Minimum Desalination Rate (%) |
|---|---|---|---|---|---|
|
JBW-4040 |
Standard industrial brackish water RO membrane for stable desalination performance. |
90 (8.4) |
2400 (9.1) |
99.5 |
99.3 |
|
JBW-4040-HR |
High-flow version designed to increase permeate production while maintaining excellent salt rejection. |
90 (8.4) |
2700 (10.2) |
99.3 |
99.0 |
Extreme Usage Conditions
| Maximum Operating Pressure | 600 psi (4.14 MPa) |
| Maximum Influent Flow Rate | 16gpm (3.6 m³/h) |
| Maximum Inlet Water Temperature | 45℃ |
| Maximum Influent SDI15 | 5 |
| Influent Free Chlorine Concentration | < 0.1 ppm |
| Influent ph Range During Continuous Operation | 2~12 |
|
ph Range of Influent During Chemical Cleaning (Short-term 30-minute Period) |
1~13 |
| Maximum Pressure Drop of a Single Membrane Element | 15psi (0.1Mpa) |
Test Conditions
| Test Pressure | 225psi (1.55Mpa) |
| Test Solution Temperature | 25℃ |
| Test Solution Concentration (NaCl) | 2000ppm |
| Test Solution ph Value | 7.5 |
| Single Membrane Element Recovery Rate | 15% |
Membrane Element Size
All units shown in the diagram are millimeters (inches).

