Product Introduction
The LH3-0650-V Ultrafiltration (UF) Module is an advanced industrial-grade membrane module designed as a direct replacement for the LITREE LH3-0650-V. Developed using robust PVDF hollow fiber membranes, this module offers superior filtration performance, chemical resistance, and operational longevity. It is ideally suited for diverse water treatment applications including municipal water supply, industrial process water, wastewater recycling, and pretreatment for reverse osmosis systems.
With optimized design parameters and compatibility with standard LITREE systems, the LH3-0650-V UF Module provides a cost-effective and efficient solution for upgrading or maintaining high-performance water filtration systems without modifying the original system configuration.

Working Principle
The LH3-0650-V UF module operates using outside-in hollow fiber ultrafiltration technology. This filtration method is driven by pressure, allowing water to pass through the outer surface of the membrane fibers while rejecting suspended solids, bacteria, colloids, and high molecular weight substances.
Filtration Process Overview:
1. Feedwater Introduction
Untreated water enters the outer shell of the module, surrounding the outside of the hollow fiber membranes.
2. Filtration Phase
Driven by a low-pressure gradient, water penetrates the porous membrane walls from the outside in. The pores, nominally 0.03 microns in diameter, effectively block contaminants such as microorganisms and turbidity-causing particles.
3. Permeate Collection
Filtered water flows into the center of the hollow fibers and exits the module through the permeate outlet.
4. Backwashing and Chemical Cleaning
Regular backwashing dislodges accumulated solids. Periodic chemical cleaning (CIP) removes persistent fouling and restores flux.
This membrane process ensures consistent water quality and extends the operational life of downstream equipment like reverse osmosis membranes.

Key Features
· Full LITREE LH3-0650-V Compatibility
Designed as a direct equivalent with identical size, connections, and operating specifications for seamless system integration.
· PVDF Membrane Construction
Durable and hydrophilic PVDF ensures excellent chemical and mechanical resistance, maintaining high performance over time.
· Low Operating Pressure
Reduces energy consumption and allows for economical long-term operation.
· Superior Backwash Recovery
Efficient backwash design minimizes fouling and maintains high water flux.
· Wide Chemical Tolerance
Supports a broad pH range during cleaning (2–12), enhancing cleanability and service life.
· High Rejection Rate of Contaminants
Blocks over 99.99% of bacteria and suspended solids, ensuring clean and safe water.
· Long Operational Life
Designed for 5–7 years of service under optimal operating conditions.

Technical Specifications
Parameter | LH3-0650-V UF Module |
Equivalent Model | LITREE LH3-0650-V |
Membrane Type | Hollow Fiber |
Membrane Material | PVDF (Hydrophilic) |
Filtration Mode | Outside-In |
Nominal Pore Size | 0.03 μm |
Effective Membrane Area | ~65 m² |
Design Flow Rate | 4,000 – 5,500 L/h |
Maximum Operating Pressure | 0.3 MPa |
Maximum TMP | 0.5 MPa |
Operating pH Range | 4 – 10 |
Cleaning pH Range | 2 – 12 |
Maximum Operating Temp | 45°C |
Fiber Inner/Outer Diameter | 0.7 mm / 1.3 mm |
Backwash & Air Scouring | Supported |
Housing Material | ABS/UPVC |
Cleaning Methods | CIP, Backwash, Air Scour |
Estimated Lifespan | 5 – 7 Years |
Certifications | ISO 9001, CE, RoHS |
Applications
The LH3-0650-V UF module is widely adopted across multiple sectors where dependable water purification is essential. Typical applications include:
1. Municipal Drinking Water Treatment
Delivers high-quality potable water by eliminating pathogens, turbidity, and suspended solids.
2. Industrial Process Water
Ensures consistent water quality for processes in food and beverage, pharmaceuticals, chemicals, and textiles.
3. Wastewater Recycling
Supports advanced treatment for greywater reuse and non-potable applications in urban or industrial settings.
4. Seawater Desalination Pretreatment
Acts as a critical pretreatment step to safeguard SWRO systems from fouling and scaling.
5. Cooling Tower and Boiler Water Treatment
Reduces scale and microbial growth by supplying low-turbidity feedwater.
6. Reverse Osmosis Pretreatment
Improves the efficiency and longevity of RO membranes by reducing fouling load.
7. Decentralized and Mobile Water Systems
Ideal for containerized, portable, and emergency response systems due to its compact footprint and low power needs.

FAQ
1. Is the LH3-0650-V module compatible with LITREE systems?
Yes. It’s fully compatible with the LITREE LH3-0650-V UF module, allowing direct replacement with no design changes.
2. What contaminants can it remove?
The module removes suspended solids, bacteria, algae, and colloidal matter. It does not remove dissolved salts.
3. What is the lifespan of the membrane?
The average operational life is 5 to 7 years with proper cleaning and maintenance practices.
4. How frequently should it be cleaned?
Backwashing is recommended every 30–60 minutes during operation. Chemical cleaning may be needed every 2–4 weeks, depending on feedwater quality.
5. What’s the maximum temperature it can handle?
The module is designed to operate at a maximum of 45°C.
6. Can it be used in seawater applications?
Yes. It’s effective as a pretreatment step for seawater reverse osmosis systems.
7. Is the installation process complex?
No. The LH3-0650-V is designed for plug-and-play installation into existing LITREE system racks and skids.
8. What is the nominal flow rate?
The module typically operates at a nominal flow rate between 4,000 and 5,500 liters per hour, depending on system design and feedwater quality.

Conclusion
The LH3-0650-V UF Module is a high-performance, reliable, and cost-effective alternative to the LITREE LH3-0650-V. With advanced PVDF hollow fiber membranes, robust design, and full system compatibility, it offers unmatched operational stability and water quality. Its wide applicability, low maintenance requirements, and long service life make it an ideal choice for water treatment professionals seeking quality and value.
Whether you're planning a system retrofit or a new build, the LH3-0650-V is the smart, scalable solution to meet your ultrafiltration needs.