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The Ultrafiltration Equipment Model LFUF-4 Applied In Wastewater Treatment and Reuse

The Ultrafiltration Equipment Model LFUF-4 Applied In Wastewater Treatment and Reuse

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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%.

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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:

ParameterSpecification
Operating Pressure0.1–0.3 MPa (14.5–43.5 psi)
Transmembrane Pressure0.05–0.2 MPa (7.3–29 psi)
Temperature Range5–40°C (41–104°F)
pH Tolerance2–12 (cleaning), 5–9 (continuous)
Feed Turbidity<15 NTU (pretreatment recommended)
Flow Rate (per module)2.5–4.0 m³/h
Recovery Rate85–95% (varies with feed quality)
Backwash FrequencyEvery 30–60 minutes (20–40 sec cycle)

Drawing

The Ultrafiltration Equipment Model LFUF-3 Applied In Wastewater Treatment and Reuse


Key Applications

Drinking Water Purification

    • Reduces turbidity from 10 NTU to <0.1 NTU and eliminates pathogens (e.g., E. coliCryptosporidium).

    • 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 PumpSand filter size (mm)Carbon filter size (mm)Anti-scale dosing systemSecurity filterHigh pressure pumpUltrafiltration system (Membrane pn&qty)
    LFUF-11CHL2-30G (0.37KW)250*1350250*135030L3*20’’/ (0.37KW)2*AQU90 membrane
    LFUF-22CHL2-40 (0.55KW)300*1300300*130030L3*20’’/ (0.55KW)4*AQU90 membrane
    LFUF-33CHL4-30 (0.75KW)350*1625350*162530L5*20’’/ (0.75KW)6*AQU90 membrane
    LFUF-44CHL4-40 (0.75KW)400*1625400*162550L5*20’’/ (0.75KW)8*AQU90 membrane
    LFUF-55CHL4-40 (0.75KW)460*1625460*162550L3*40’’CHL4-40 (0.75KW)10*AQU90 membrane
    LFUF-66CHL8-20 (1.1KW)600*1800600*1800100L3*40’’CHL8-20 (1.1KW)3*AQU200 membrane
    LFUF-88CHL8-30 (1.1KW)600*1800600*1800100L7*40’’CHL8-30 (1.1KW)4*AQU200 membrane
    LFUF-1010CHL12-30 (1.5KW)750*1900750*1900200L7*40’’CHL8-40 (1.5KW)5*AQU200 membrane
    LFUF-1212CHL12-30 (1.8KW)900*1900900*1900200L7*40’’CHL12-30 (1.8KW)6*AQU200 membrane
    LFUF-1414CHL12-40 (2.4KW)900*1900900*1900200L12*40’’CHL12-40 (2.4KW)7*AQU200 membrane
    LFUF-1515CHL12-40 (2.4KW)1000*1900900*1900200L12*40’’CHL12-40 (2.4KW)8*AQU200 membrane
    LFUF-1818CHL16-30 (3.0KW)1000*22001000*2200200L15*40’’CHL16-30 (3.0KW)9*AQU200 membrane
    LFUF-2020CHL20-30 (4KW)1200*22001200*2200200L15*40’’CHL20-30 (4KW)10*AQU200 membrane






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