Introduction
The LFUF-4 Ultrafiltration System revolutionizes solid-liquid separation with its high-efficiency hollow fiber membrane technology. Designed for industrial, municipal, and specialty water treatment, this system removes suspended solids, bacteria, viruses, and colloids while maintaining low energy consumption. Its asymmetric PVDF (polyvinylidene fluoride) membrane structure combines durability with consistent permeability, achieving turbidity reduction to <0.1 NTU and microbial removal rates >99.99%.
Suggested Operating Conditions
The LFUF-4 operates optimally under these parameters:
| Parameter | Specification |
|---|---|
| Operating Pressure | 0.1–0.3 MPa (14.5–43.5 psi) |
| Transmembrane Pressure | 0.05–0.2 MPa (7.3–29 psi) |
| Temperature Range | 5–40°C (41–104°F) |
| pH Tolerance | 2–12 (cleaning), 5–9 (continuous) |
| Feed Turbidity | <15 NTU (pretreatment recommended) |
| Flow Rate (per module) | 2.5–4.0 m³/h |
| Recovery Rate | 85–95% (varies with feed quality) |
| Backwash Frequency | Every 30–60 minutes (20–40 sec cycle) |
Key Applications
Drinking Water Purification
Reduces turbidity from 10 NTU to <0.1 NTU and eliminates pathogens (e.g., E. coli, Cryptosporidium).
Complies with WHO and EPA standards for safe potable water.
Industrial Wastewater Pretreatment
Removes oil (to <5 mg/L), emulsified particles, and silica from cooling tower blowdown or metalworking effluents.
Extends lifespan of downstream RO systems by reducing SDI15 to <3.
Seawater Pretreatment for Desalination
Filters algae and organic matter (TOC <2 ppm) to protect SWRO membranes.
Operates at high salinity (up to 45,000 ppm TDS) without fiber breakage.
Food & Beverage Processing
Clarifies fruit juices and dairy products, achieving a 100% removal of bacteria and spores.
Retains macromolecules (proteins, polysaccharides) for product quality.
Landfill Leachate Treatment
Reduces COD by 60–80% and heavy metals (e.g., Pb, Cd) to <0.1 ppm.
Innovative Design Features
1. Anti-Fouling Membrane Technology
Hydrophilic PVDF Fibers: Minimize organic adhesion; recover 98% flux after chemical cleaning.
Dead-End/Crossflow Dual Mode: Adapts to feedwater variability without sacrificing throughput.
2. Energy-Efficient Operation
Gravity-Driven Filtration: Consumes <0.03 kWh/m³ in low-turbidity applications.
Automated Backwashing: Uses filtered permeate, reducing water waste by 20% vs. traditional systems.
3. Modular Scalability
Stackable Units: Each module covers 40–60 m² membrane area; systems scale from 10 m³/day to 10,000 m³/day.
Plug-and-Play Integration: Compatible with PLC/SCADA controls for remote monitoring.
4. Maintenance Simplicity
In-Situ CIP (Cleaning-in-Place): Restores performance with 0.5% NaOCl (pH 12) or 0.3% citric acid (pH 2).
Membrane Lifespan: 5–8 years with <10% flux decline annually under standard conditions.
Performance Validation & Compliance
Certifications: NSF/ANSI 61, CE Mark, ISO 9001/14001.
Case Study: A 5,000 m³/day municipal plant in Germany reduced chemical usage by 35% after switching to LFUF-4.
Warranty: 3-year full warranty + 2-year prorated coverage for membrane integrity.
Environmental & Economic Benefits
Reduced Sludge Production: Generates 50% less waste vs. conventional sedimentation.
ROI: Payback within 1.5–2 years via lower energy costs and reduced downtime.
Other model
Model | Flow rate (m³/hr) | Raw water Pump | Sand filter size (mm) | Carbon filter size (mm) | Anti-scale dosing system | Security filter | High pressure pump | Ultrafiltration system (Membrane pn&qty) |
|---|---|---|---|---|---|---|---|---|
| LFUF-1 | 1 | CHL2-30G (0.37KW) | 250*1350 | 250*1350 | 30L | 3*20’’ | / (0.37KW) | 2*AQU90 membrane |
| LFUF-2 | 2 | CHL2-40 (0.55KW) | 300*1300 | 300*1300 | 30L | 3*20’’ | / (0.55KW) | 4*AQU90 membrane |
| LFUF-3 | 3 | CHL4-30 (0.75KW) | 350*1625 | 350*1625 | 30L | 5*20’’ | / (0.75KW) | 6*AQU90 membrane |
| LFUF-4 | 4 | CHL4-40 (0.75KW) | 400*1625 | 400*1625 | 50L | 5*20’’ | / (0.75KW) | 8*AQU90 membrane |
| LFUF-5 | 5 | CHL4-40 (0.75KW) | 460*1625 | 460*1625 | 50L | 3*40’’ | CHL4-40 (0.75KW) | 10*AQU90 membrane |
| LFUF-6 | 6 | CHL8-20 (1.1KW) | 600*1800 | 600*1800 | 100L | 3*40’’ | CHL8-20 (1.1KW) | 3*AQU200 membrane |
| LFUF-8 | 8 | CHL8-30 (1.1KW) | 600*1800 | 600*1800 | 100L | 7*40’’ | CHL8-30 (1.1KW) | 4*AQU200 membrane |
| LFUF-10 | 10 | CHL12-30 (1.5KW) | 750*1900 | 750*1900 | 200L | 7*40’’ | CHL8-40 (1.5KW) | 5*AQU200 membrane |
| LFUF-12 | 12 | CHL12-30 (1.8KW) | 900*1900 | 900*1900 | 200L | 7*40’’ | CHL12-30 (1.8KW) | 6*AQU200 membrane |
| LFUF-14 | 14 | CHL12-40 (2.4KW) | 900*1900 | 900*1900 | 200L | 12*40’’ | CHL12-40 (2.4KW) | 7*AQU200 membrane |
| LFUF-15 | 15 | CHL12-40 (2.4KW) | 1000*1900 | 900*1900 | 200L | 12*40’’ | CHL12-40 (2.4KW) | 8*AQU200 membrane |
| LFUF-18 | 18 | CHL16-30 (3.0KW) | 1000*2200 | 1000*2200 | 200L | 15*40’’ | CHL16-30 (3.0KW) | 9*AQU200 membrane |
| LFUF-20 | 20 | CHL20-30 (4KW) | 1200*2200 | 1200*2200 | 200L | 15*40’’ | CHL20-30 (4KW) | 10*AQU200 membrane |
