Brackish Water High Rejection Elements
Key Features
| Brackish Water High Rejection RO Elements | : | Product Name Brackish Water High Rejection RO Elements Manufacturer / Brand DuPont FilmTec™ / Equivalent OEM Membrane Type Thin Film Composite (TFC) Polyamide Operating Pressure 150–250 psi (10–17 bar) Salt Rejection Rate Up to 99.5–99.7% Permeate Flow Rate 8,000–12,000 GPD (model dependent) Energy Efficiency High – optimized for low-pressure operation Operating Temperature Max 45°C (113°F) pH Range (Continuous Operation) 2 – 11 pH Range (Cleaning) 1 – 13 Feed Water Type Brackish Water (TDS 1,000–10,000 ppm) Maximum Feed Water SDI 5 Chlorine Tolerance 0 ppm (requires dechlorinated feed) Recovery Rate 15–75% (depending on system design) Applications Industrial, Commercial, and Municipal Water Treatment Membrane Material Polyamide Thin Film Composite Element Size / Dimensions 4-inch (BW30-4040) and 8-inch (BW30-8040) Expected Service Life 3–7 years (depending on feed water quality) Fouling Resistance High – smooth surface resists scaling and organic fouling Key Benefits High salt rejection, high permeate flow, energy efficient, durable Certifications / Standards ISO 9001, NSF/ANSI 58 (depending on model) Environmental Impact Reduced energy use and lower chemical consumption Core Function Production of high-purity water from brackish sources |
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Brackish Water High Rejection ROElements –
BrackishWater High Rejection RO Elements are advanced reverse osmosis membranes
specifically designed for the treatment of brackish water sources that contain
moderate levels of dissolved salts, minerals, and other impurities. These
membranes provide exceptional salt rejection performance, ensuring the
production of high-purity water while maintaining excellent flow rates and
operational efficiency.
Engineered
with thin-film composite (TFC) polyamide technology, high rejection
elements are widely used across industrial, commercial, and municipalapplications where high-quality water is essential for production, consumption,
or processing. Their robust design, high rejection rates, and energy efficiency
make them one of the most reliable solutions in modern water treatment systems.
1. Overview
Brackish
water typically has Total Dissolved Solids (TDS) levels ranging between
1,000 and 10,000 parts per million (ppm). Traditional filtration methods
struggle to remove such high salt content effectively. High rejection
reverse osmosis (RO) elements are specifically designed to handle these
conditions by rejecting over 99.5% of dissolved salts, organics, and
other contaminants.
These
elements operate at moderate pressures (typically 150–250 psi), which allows
them to balance energy consumption and performance efficiently. They are
ideal for applications that demand consistent, high-purity water while reducing
the overall cost of operation.
2. Construction and Design
The
Brackish Water High Rejection RO Elements are constructed using three-layer
thin-film composite (TFC) materials, engineered for strength, performance,
and longevity:
- Polyester Fabric Base: Provides structural support
and durability under high-pressure conditions.
- Microporous Polysulfone
Layer:
Serves as a sublayer to ensure uniform flow and pressure distribution
across the membrane surface.
- Aromatic Polyamide Active
Layer: The
top, semi-permeable layer responsible for selective ion rejection and high
water permeability.
This
multilayer construction delivers superior chemical and mechanical stability,
allowing the membrane to withstand extended use in challenging environments.
The advanced polyamide chemistry offers excellent resistance to a wide range of
feed water conditions and cleaning chemicals.
3. Key Features
- High Salt Rejection:
Typically rejects 99.5% or more of dissolved salts, minerals, and impurities, providing exceptionally pure permeate water. - Optimized Flow Rate:
Delivers high permeate output with stable performance, even under varying feed water conditions. - Energy Efficiency:
Operates efficiently at lower feed pressures, reducing power consumption and operational costs compared to older membrane designs. - Durable and Long-Lasting:
The robust polyamide TFC structure provides long service life, ensuring stable performance over years of operation. - Fouling and Scaling
Resistance:
A smooth, hydrophilic surface minimizes fouling, scaling, and organic build-up, reducing cleaning frequency and downtime. - Easy Integration:
Compatible with most standard 4-inch and 8-inch pressure vessels, making replacement and retrofitting simple and cost-effective.
4. Technical Performance and
Operating Parameters
|
Parameter |
Typical Value |
|
Salt Rejection Rate |
Up to 99.5–99.7% |
|
Operating Pressure |
150–250 psi (10–17
bar) |
|
Permeate Flow Rate |
8,000–12,000 GPD
(model dependent) |
|
Operating Temperature |
Maximum 45°C (113°F) |
|
pH Range (Continuous
Operation) |
2 – 11 |
|
pH Range (Cleaning) |
1 – 13 |
|
Maximum Feed Water
SDI |
5 |
|
Chlorine Tolerance |
0 ppm (chlorine must
be removed before membrane) |
|
Recovery Rate |
15–75% (depending on
system design and feed quality) |
To
maintain high performance, proper pretreatment of feed water isrequired. This includes sediment filtration, activated carbon filtration (for
chlorine removal), and anti-scalant dosing to prevent scaling from calcium,
magnesium, or silica.
5. Applications
The
Brackish Water High Rejection RO Elements are used across multiple
sectors, providing consistent and reliable purification in:
- Industrial Water Treatment:
For manufacturing, electronics, pharmaceuticals, food and beverage processing, and boiler feed water. - Municipal and Community
Water Systems:
For producing safe, potable water from brackish groundwater sources. - Commercial Water
Purification:
Installed in hotels, hospitals, universities, and office complexes for reliable water quality. - Desalination Plants:
Used as a cost-effective stage for treating moderately saline water before or after seawater desalination. - Wastewater Recovery and
Reuse:
Effective in tertiary treatment systems where high-quality reclaimed water is required.
6. Advantages
The main
advantages of Brackish Water High Rejection RO Elements include:
- Exceptional Purity: Produces high-quality water
by removing salts, heavy metals, organic compounds, and microorganisms.
- Reduced Energy Consumption: Operates efficiently at
moderate pressure compared to seawater RO membranes.
- Long Service Life: Designed for consistent
performance and reduced membrane replacement frequency.
- Lower Maintenance Costs: High fouling resistance
means less frequent cleaning and downtime.
- Versatile Use: Suitable for a wide variety
of feed water conditions and system designs.
- Environmental Benefits: Energy efficiency
contributes to lower carbon emissions and more sustainable operations.
7. Maintenance and
Cleaning
Proper
maintenance and cleaning ensure long-term efficiency and reliability of the
membrane:
- Regular Monitoring: Check permeate
conductivity, flow rate, and pressure differentials.
- Chemical Cleaning: Perform periodic cleaning
using specialized low- and high-pH solutions to remove organic,
biological, or inorganic fouling.
- Preventive Care: Ensure pre-filtration and
anti-scalant dosing to reduce the risk of scaling and fouling.
- Proper Shutdown Procedures: Flush the membrane with
clean water when not in use to prevent stagnation and bacterial growth.
With
correct operation and maintenance, Brackish Water High Rejection RO Elementstypically last 3–7 years, depending on feed water quality and system
design.
8. Environmental and Economic Impact
By
combining high rejection rates with low energy consumption, these membranes
contribute to sustainable and cost-effective water treatment. They
require less power for pumping and fewer chemical cleanings, which reduces both
operational expenses and environmental impact. Their long service life
and reliable performance make them an ideal choice for organizations seeking
both efficiency and environmental responsibility.
Conclusion
The
Brackish Water High Rejection RO Elements are a proven solution for
producing high-purity water from challenging brackish sources. With 99.7%
salt rejection, excellent flow rates, and low energy requirements, they
deliver unmatched efficiency and reliability. Whether used in industrial,
commercial, or municipal systems, these membranes ensure optimal performance,
lower operating costs, and environmentally sustainable water purification —
making them one of the most trusted technologies in modern reverse osmosis
systems.
| Brackish Water High Rejection RO Elements | Product Name Brackish Water High Rejection RO Elements Manufacturer / Brand DuPont FilmTec™ / Equivalent OEM Membrane Type Thin Film Composite (TFC) Polyamide Operating Pressure 150–250 psi (10–17 bar) Salt Rejection Rate Up to 99.5–99.7% Permeate Flow Rate 8,000–12,000 GPD (model dependent) Energy Efficiency High – optimized for low-pressure operation Operating Temperature Max 45°C (113°F) pH Range (Continuous Operation) 2 – 11 pH Range (Cleaning) 1 – 13 Feed Water Type Brackish Water (TDS 1,000–10,000 ppm) Maximum Feed Water SDI 5 Chlorine Tolerance 0 ppm (requires dechlorinated feed) Recovery Rate 15–75% (depending on system design) Applications Industrial, Commercial, and Municipal Water Treatment Membrane Material Polyamide Thin Film Composite Element Size / Dimensions 4-inch (BW30-4040) and 8-inch (BW30-8040) Expected Service Life 3–7 years (depending on feed water quality) Fouling Resistance High – smooth surface resists scaling and organic fouling Key Benefits High salt rejection, high permeate flow, energy efficient, durable Certifications / Standards ISO 9001, NSF/ANSI 58 (depending on model) Environmental Impact Reduced energy use and lower chemical consumption Core Function Production of high-purity water from brackish sources |
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