Introduction
The LFUF-4 Ultrafiltration (UF) System, developed by XINXIANG LIFEIERTE FILTER CORP., LTD, is a state-of-the-art solution for industrial and municipal water treatment. Designed to remove suspended solids, colloids, bacteria, and macromolecular organic compounds, the LFUF-4 ensures consistent high-purity water output for critical applications such as pharmaceutical production, food and beverage processing, and wastewater reuse. Leveraging advanced hollow-fiber membrane technology, this system combines efficiency, durability, and ease of maintenance, making it a cost-effective choice for diverse industries.
Technical Specifications
The LFUF-4 is engineered for optimal performance under varying operational conditions. Key specifications include:
| Parameter | Value |
|---|---|
| Membrane Type | Polyethersulfone (PES) Hollow Fiber |
| Pore Size | 0.01–0.1 μm |
| Flow Rate | 4 m³/hr |
| Operating Pressure | 0.1–0.3 MPa (15–45 psi) |
| Temperature Range | 5°C–45°C |
| pH Tolerance | 2.0–12.0 |
| Turbidity Removal Rate | >99.9% |
| Bacterial Retention | >99.99% (LRV ≥6) |
| Membrane Lifespan | 3–5 years (with proper maintenance) |
| Dimensions (L×W×H) | 1500×800×1800 mm |
Note: Specifications are validated under ISO 9001-certified testing conditions.
Working Principle
The LFUF-4 employs crossflow ultrafiltration to achieve efficient separation:
- Feedwater Intake: Raw water is pumped into the system and directed through a pre-filter to remove large particles.
- Membrane Filtration: The pressurized feed flows tangentially across the hollow-fiber membrane surface. Water and small molecules (<0.1 μm) permeate through the membrane pores, while suspended solids, bacteria, and macromolecules are retained.
- Backwash Cycle: Periodic reverse flushing with permeate water dislodges accumulated contaminants, maintaining membrane flux and extending service life.
- Permeate Collection: Purified water is collected for use, while concentrated contaminants are discharged as reject water.
This process ensures >99.9% turbidity removal and LRV ≥6 for bacteria, meeting stringent purity standards.
Performance & Advantages
The LFUF-4 outperforms conventional filtration systems with its robust design and advanced features:
Key Advantages
- High Efficiency: Removes particles, colloids, and pathogens without chemicals.
- Low Energy Consumption: Operates at low pressure (15–45 psi), reducing operational costs.
- Chemical Resistance: PES membranes withstand aggressive cleaning agents (e.g., NaOH, HCl).
- Automated Operation: Integrated PLC controls backwash cycles, pressure monitoring, and alarms.
- Compact Design: Modular structure saves space and allows scalability.
Performance Metrics
| Parameter | LFUF-4 | Industry Standard |
|---|---|---|
| Permeate Turbidity | <0.1 NTU | <1 NTU |
| Recovery Rate | 85–92% | 75–90% |
| Cleaning Frequency | Every 30–60 minutes | Every 15–30 minutes |
Product Structure
The LFUF-4 features a modular, user-friendly design:
- Pre-Filtration Unit: Includes a 20-μm cartridge filter to protect the UF membrane.
- Hollow-Fiber Membrane Module: Contains thousands of PES fibers with a total surface area of 40 m².
- Stainless Steel Housing: Corrosion-resistant 304 SS construction for durability.
- Backwash System: Automated pumps and valves for efficient membrane cleaning.
- Control Panel: Touchscreen PLC interface for real-time monitoring of pressure, flow, and turbidity.
Application in Pharmaceutical Water
Pharmaceutical water systems require zero endotoxins and ultra-low microbial counts. The LFUF-4 is ideal for:
- Purified Water (PW) Production: Removes particulates, pyrogens, and bacteria to meet USP/EP standards.
- Pretreatment for RO Systems: Reduces RO membrane fouling by eliminating colloids and organics.
- WFI (Water for Injection) Support: Ensures feedwater quality for subsequent distillation or RO polishing.
Case Study: A pharmaceutical facility in Asia reduced bacterial counts by 99.99% and achieved 24/7 compliance with pharmacopeial standards after installing the LFUF-4.
Other Applications
Beyond pharmaceuticals, the LFUF-4 serves diverse industries:
- Food & Beverage: Clarification of juices, dairy processing, and brewery water treatment.
- Electronics: Ultra-pure water for semiconductor manufacturing.
- Municipal Water: Surface water treatment and wastewater reuse.
- Chemical Industry: Process water purification and emulsion separation.
Conclusion
The LFUF-4 Ultrafiltration System by XINXIANG LIFEIERTE FILTER CORP., LTD delivers unmatched reliability and efficiency for high-purity water production. Its advanced membrane technology, automated controls, and robust construction make it a versatile solution for industries demanding stringent water quality. Whether for pharmaceutical-grade water, food processing, or municipal applications, the LFUF-4 ensures operational excellence and sustainability.
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Technical Parameter
| Model | Water production | Influent Pressure | water inlet | water outlet | top pipe diameter | downstream piping diameter | Enhanced backwash | air flushing |
| (m³/h) | ||||||||
| LF-UF-001 | 1 | ≤ 0.3MPa | DN20 | DN20 | DN20 | DN20 | Yes | Selectable |
| LF-UF-003 | 3 | ≤ 0.3MPa | DN25 | DN25 | DN32 | DN32 | Yes | Selectable |
| LF-UF-005 | 5 | ≤ 0.3MPa | DN32 | DN32 | DN40 | DN40 | Yes | Selectable |
| LF-UF-010 | 10 | ≤ 0.3MPa | DN50 | DN50 | DN65 | DN65 | Yes | Selectable |
| LF-UF-020 | 20 | ≤ 0.3MPa | DN65 | DN65 | DN80 | DN80 | Yes | Yes |
| LF-UF-030 | 30 | ≤ 0.3MPa | DN80 | DN80 | DN100 | DN100 | Yes | Yes |
| LF-UF-050 | 50 | ≤ 0.3MPa | DN100 | DN100 | DN125 | DN125 | Yes | Yes |
| LF-UF-060 | 60 | ≤ 0.3MPa | DN125 | DN125 | DN150 | DN150 | Yes | Yes |
| LF-UF-080 | 80 | ≤ 0.3MPa | DN125 | DN125 | DN150 | DN150 | Yes | Yes |
| LF-UF-100 | 100 | ≤ 0.3MPa | DN150 | DN150 | DN200 | DN200 | Yes | Yes |
| LF-UF-120 | 120 | ≤ 0.3MPa | DN150 | DN150 | DN200 | DN200 | Yes | Yes |
| LF-UF-150 | 150 | ≤ 0.3MPa | DN150 | DN150 | DN200 | DN200 | Yes | Yes |
| LF-UF-200 | 200 | ≤ 0.3MPa | DN200 | DN200 | DN250 | DN250 | Yes | Yes |
