Reverse osmosis membranes of the AG series

1.Product Overview

XINXIANG LIFEIERTE FILTER CORP., LTD, a leading provider of water treatment solutions, introduces the AG Series Reverse Osmosis (RO) Membranes, engineered for brackish water desalination and industrial applications. Designed with advanced thin-film composite (TFC) technology, the AG Series combines high salt rejection, energy efficiency, and robust anti-fouling performance. Ideal for water sources with TDS levels ranging from 1,000 to 10,000 mg/L, this series includes specialized variants such as AG Standard, AG FR (Fouling Resistant), AG LF (Low Fouling), and AG HR (High Rejection), catering to diverse industrial needs in power generation, electronics, food & beverage, pharmaceuticals, and municipal wastewater reuse.

2.Technical Specifications

• Salt Rejection:

• Standard Models: ≥99.5% NaCl rejection (AG8040F).

• High-Rejection Models (AG HR): ≥99.8% NaCl rejection.

• Water Flux:

• Operating Range: 10–20 GFD (15–35 LMH).

• Maximum Flow: Up to 11,500 GPD (43.5 m³/day) for AG-440 models.

• Operating Pressure:

• Standard Brackish Water: 200 psig (1,379 kPa).

• Low-Pressure Models (AG LF/FR): As low as 100 psig (689 kPa).

• Membrane Area: 365–440 ft² (33.9–40.9 m²), adaptable to system scalability.

• Temperature Tolerance:

• Continuous Operation: ≤50°C.

• Chemical Cleaning: ≤50°C.

• pH Range:

• Operational: 4.0–11.0.

• Cleaning: 2.0–11.5.

3. Product Features & Advantages

3.1 High Efficiency & Energy Savings

• Optimized Membrane Structure: Cross-linked polyamide active layer ensures >99.5% salt rejection even at low pressures (200 psig), reducing energy consumption by 15–20% compared to conventional membranes.

• Wide Feed Channel: 34-mil feed spacers minimize particulate fouling and pressure drop.

3.2 Anti-Fouling Design

• AG FR Series: Enhanced surface hydrophilicity reduces organic and colloidal adhesion.

• AG LF Series: Modified membrane charge minimizes scaling risks in high-hardness water.

3.3 Durability & Reliability

• FRP Housing: Corrosion-resistant fiberglass-reinforced casing withstands pressures up to 600 psig (4,137 kPa).

• Extended Service Life: Standardized differential pressure ≤50 psig (345 kPa) per vessel, extending cleaning intervals to 6–12 months.

3.4 System Flexibility

• Compatible with multi-stage configurations (e.g., 2:1 array) for recovery rates up to 85%.

• Available in 4-inch (101.6 mm) and 8-inch (203.2 mm) diameters, fitting industry-standard pressure vessels.

4. Working Principle

The AG Series RO membranes operate on semi-permeable separation:

1. High-Pressure Feed: Raw water is pressurized (200–800 psig) and forced through the membrane’s polyamide active layer.

2. Selective Filtration: Dissolved salts, organics, and particles (>0.0001 μm) are rejected, while purified water permeates into the central product tube.

3. Concentrate Discharge: Contaminants exit as concentrate, ensuring continuous purification.

5. Applications

5.1 Industrial Water Treatment

• Electronics: Ultra-pure water (UPW) for semiconductor manufacturing (resistivity ≥18 MΩ·cm).

• Power Plants: Boiler feedwater treatment to prevent scaling in turbines.

5.2 Food & Beverage

• Juice Concentration: Remove microbes while retaining flavor compounds.

• Dairy Processing: Desalination of whey protein concentrates.

5.3 Pharmaceuticals & Healthcare

• WFI Production: Pretreatment for Water-for-Injection (WFI) complying with USP/EP standards.

• Hemodialysis: Purification of dialysis water to eliminate endotoxins.

5.4 Municipal & Environmental

• Brackish Water Desalination: AG HR models paired with AD Series for seawater applications.

• Wastewater Reuse: Heavy metal removal (>99.9%) in electroplating effluent.

6. Complementary Product Lines

Lefilter offers a full rangeof RO membranes for varied applications:

1. AD Series: High-pressure (≥800 psig) seawater membranes with >93% boron rejection.

2. AK Series: Ultra-low-pressure (100 psig) membranes for low-TDS (<5,000 mg/L) water, saving 30% energy.

3. AP Series: Extremely low-pressure (70 psig) membranes for residential and beverage industries.

4. Anti-Fouling Series: AG LF/FR for high-SDI surface water or wastewater.

7. Conclusion

The AG Series Reverse Osmosis Membranes by XINXIANG LIFEIERTE FILTER CORP., LTD exemplify innovation in water purification, delivering unmatched salt rejection, fouling resistance, and operational flexibility. Designed for industries demanding high-purity water, these membranes reduce lifecycle costs through energy efficiency and extended durability. Supported by Lefilter’s global technical network, the AG Series empowers clients to achieve sustainable water management and compliance with stringent quality standards.