Product Introduction
The LH3-0680-V UF Module is a high-performance ultrafiltration membrane system developed as a compatible and efficient alternative to the LITREE LH3-0680-V module. Engineered with advanced PVDF (polyvinylidene fluoride) hollow fiber membranes, this industrial-grade unit provides consistent water purification with excellent chemical resistance, long service life, and robust mechanical integrity.
This module is ideal for municipal, industrial, and commercial water treatment applications. As a direct replacement for LITREE models, the LH3-0680-V enables system upgrades or maintenance with minimal retrofit or downtime, offering enhanced performance at a competitive cost.

Working Principle
The LH3-0680-V module operates based on outside-in hollow fiber ultrafiltration technology, designed to physically remove suspended solids, bacteria, viruses, and colloidal substances through size exclusion.
Filtration Process:
1. Feedwater enters the shell side of the module, surrounding the outer surface of the hollow fibers.
2. Water passes through the porous membrane wall, where contaminants are retained based on pore size (~0.03 μm).
3. Purified water flows inside the fiber (lumen) and is collected via the permeate outlet.
4. Backflushing and air scouring periodically remove accumulated solids and extend membrane lifespan.
The result is reliable, low-turbidity permeate with a microbial removal efficiency exceeding 99.99%.

Key Features
· LITREE-Compatible
Direct-fit alternative for LH3-0680-V—same footprint and connections.
· Superior PVDF Membrane
Delivers excellent mechanical strength, chemical resistance, and fouling tolerance.
· Stable Performance
Maintains high flux under varying feedwater conditions with consistent permeate quality.
· Integrated Backwash & Air Scour
Ensures sustained performance with reduced cleaning frequency.
· Cost-Effective Solution
Competitive pricing with extended operational life and low maintenance costs.
· Wide pH and Temperature Range
Operates under diverse conditions with high chemical cleaning compatibility.

Technical Specifications
Parameter | LH3-0680-V UF Module |
Equivalent Model | LITREE LH3-0680-V |
Membrane Material | PVDF (Hydrophilic) |
Membrane Type | Hollow Fiber |
Filtration Mode | Outside-In |
Nominal Pore Size | 0.03 µm |
Effective Membrane Area | 68 m² |
Recommended Flow Rate | 4.5 – 6.0 m³/h |
Max Transmembrane Pressure | 0.5 MPa (5 bar) |
Max Operating Pressure | 0.3 MPa (3 bar) |
Operating pH Range | 4 – 10 |
Cleaning pH Range | 2 – 12 |
Operating Temperature Range | 5°C – 45°C |
Outer / Inner Fiber Diameter | 1.3 mm / 0.7 mm |
Housing Material | UPVC / ABS |
Backwash & Air Scour Support | Yes |
CIP (Clean-In-Place) Support | Yes |
Typical Service Life | 5 – 7 years |
Applications
The LH3-0680-V UF Module is built for versatile water treatment needs, including:
1. Municipal Water Treatment
Removes bacteria and suspended solids from surface water or groundwater to produce safe potable water.
2. Industrial Process Water
Ensures purity for use in electronics, textiles, automotive, pharmaceuticals, and other industries.
3. Wastewater Reuse & Recycling
Improves effluent quality for irrigation, industrial reuse, and zero liquid discharge systems.
4. RO Pretreatment
Protects reverse osmosis membranes by minimizing particulate load and biofouling.
5. Desalination Pretreatment
Used ahead of SWRO systems to stabilize feedwater and extend membrane life.
6. Emergency or Mobile Water Systems
Ideal for portable or containerized treatment setups in remote areas or disaster relief operations.

FAQ
1. Is this module fully compatible with the LITREE LH3-0680-V?
Yes. The LH3-0680-V matches the dimensions, hydraulic parameters, and fittings of the LITREE equivalent, enabling direct replacement without modification.
2. What impurities can it remove?
The membrane removes particles, bacteria, protozoa, algae, and suspended solids. It is not intended for salt or dissolved ion removal.
3. How often does it need cleaning?
Routine backwashing every 30–60 minutes is recommended. Chemical cleaning frequency depends on feedwater quality but typically ranges from weekly to monthly.
4. What’s the average flow rate per module?
Each LH3-0680-V module supports 4.5–6.0 m³/h depending on feedwater quality and transmembrane pressure.
5. Can this module be used for seawater filtration?
Yes, as a pretreatment step before desalination (SWRO), it helps protect downstream systems from fouling.
6. How long does the membrane last?
Typical membrane lifespan is 5 to 7 years under standard operational and maintenance conditions.
7. What chemicals can be used for cleaning?
Compatible with acidic, alkaline, and oxidative cleaning agents (e.g., citric acid, NaOH, sodium hypochlorite) within a pH range of 2–12.
8. What are the installation guidelines?
The module should be installed vertically, supported firmly, and connected with proper flow direction to ensure effective filtration. Manufacturer guidelines for backwash, air scour, and chemical cleaning must be followed.

Conclusion
The LH3-0680-V UF Module is a premium-grade ultrafiltration solution designed to provide a seamless and efficient alternative to the LITREE LH3-0680-V. Featuring durable PVDF hollow fiber membranes and robust performance across a wide range of applications, this module supports long-term, reliable, and cost-effective water purification.
Its proven compatibility, high flow rates, and low fouling tendency make it the ideal choice for system operators looking for dependable ultrafiltration performance without redesigning existing systems.