Product Introduction
The UOT-865G Ultrafiltration (UF) Module is a high-performance, industrial-grade membrane solution designed as a direct equivalent to the Motimo UOT-865G model. Built with durable PVDF hollow fiber membranes and engineered for high recovery and long-term reliability, the UOT-865G module is ideal for a wide variety of water purification applications. Whether used in municipal, industrial, or wastewater reuse systems, this module provides outstanding filtration performance, cost-efficiency, and operational ease.
As a drop-in replacement for existing Motimo UF systems, the UOT-865G enables seamless upgrades or replacements without modifying existing infrastructure—helping users lower capital costs while benefiting from state-of-the-art membrane technology.

Working Principle
The UOT-865G UF module utilizes outside-in hollow fiber membrane technology to physically separate suspended solids, microorganisms, and macromolecules from water. This method ensures a highly reliable barrier for contaminants while maintaining high water flux and low energy consumption.
Key Filtration Stages:
1. Feedwater Inflow:
Untreated water is introduced into the shell side of the module, surrounding the outside of the hollow fibers.
2. Filtration Process:
Water passes through the 0.03-micron pores in the membrane walls from the outside in, effectively removing impurities such as bacteria, colloids, and suspended solids.
3. Permeate Collection:
Clean water flows into the lumen of the fibers and exits through the permeate port.
4. Backwash & Cleaning:
Reversible flow and periodic backwashing remove accumulated solids, while chemical cleaning (CIP) restores performance when needed.
The module’s efficient design supports continuous operation with minimal maintenance and extended lifespan.

Product Features
· Motimo UOT-865G Compatible
Fully interchangeable with Motimo’s UOT-865G, offering plug-and-play replacement without system modification.
· High-Quality PVDF Membrane
Manufactured using advanced PVDF (Polyvinylidene fluoride), providing strong chemical resistance and long-lasting filtration performance.
· Optimized Flow Dynamics
Delivers high water flux and low transmembrane pressure, reducing operational costs and energy consumption.
· Robust Mechanical Strength
Withstands high backwash pressure and frequent cleaning cycles, ensuring long-term structural integrity.
· Wide Chemical Compatibility
Resistant to a wide range of cleaning agents, supporting a broad cleaning pH range.
· Low Fouling Tendency
Hydrophilic surface reduces fouling and biofilm formation, extending cleaning intervals.
· Compact & Scalable
Easy to integrate into compact or large-scale UF systems, suitable for modular system expansion.

Technical Parameters
Parameter | UOT-865G UF Module |
Equivalent Model | Motimo UOT-865G |
Membrane Type | Hollow Fiber |
Membrane Material | PVDF (Hydrophilic) |
Filtration Mode | Outside-In |
Nominal Pore Size | 0.03 μm |
Effective Membrane Area | ~65 m² |
Nominal Permeate Flow | 4,500 – 5,500 L/h |
Max Operating Pressure | 0.3 MPa |
Max Transmembrane Pressure | 0.5 MPa |
Operating pH Range | 4 – 10 |
Cleaning pH Range | 2 – 12 |
Max Operating Temperature | 45°C |
Fiber Inner/Outer Diameter | 0.7 mm / 1.3 mm |
Backwash & Air Scour | Supported |
Housing Material | ABS or FRP |
Cleaning Method | CIP, Air Scouring, Backwash |
Expected Lifespan | 5–7 Years |
Certifications | ISO 9001, CE, RoHS |
Applications
The UOT-865G module is suitable for a wide range of filtration applications, including:
1. Municipal Drinking Water
Removes bacteria, suspended solids, and turbidity to produce safe, potable water.
2. Industrial Process Water
Provides consistent quality feed water for industries like food & beverage, pharmaceuticals, textiles, and microelectronics.
3. Wastewater Treatment & Reuse
Used in tertiary treatment to recycle water for irrigation, industrial reuse, and non-potable purposes.
4. RO Pretreatment
Extends the lifespan of reverse osmosis membranes by lowering SDI (Silt Density Index) and removing particles.
5. Seawater Desalination Pretreatment
Prevents membrane fouling in SWRO systems by acting as a robust pre-filtration step.
6. Cooling Tower and Boiler Water Treatment
Prevents scaling, corrosion, and biofouling in heating and cooling systems.
7. Emergency & Mobile Filtration Units
Lightweight and compact design make it ideal for mobile water purification units in disaster response or temporary installations.

FAQ
1. Is the UOT-865G module an exact replacement for Motimo’s UOT-865G?
Yes. The UOT-865G matches Motimo’s design and performance specifications, enabling direct replacement without retrofitting.
2. What is the primary membrane material?
The membrane is made from hydrophilic PVDF, known for its superior chemical resistance and mechanical strength.
3. Can it remove viruses or bacteria?
Yes. While not a certified virus barrier, the 0.03-micron pore size effectively removes most bacteria and a significant percentage of viruses.
4. How often does the module need cleaning?
Cleaning intervals vary by feedwater quality. Typically, backwashing occurs every 30–60 minutes, with chemical cleaning every 2–4 weeks.
5. What kind of maintenance does it require?
Routine monitoring of pressure drop, periodic backwashing, and CIP procedures ensure optimal long-term performance.
6. Can it be used in seawater treatment?
Yes. It’s widely used as a pretreatment stage in seawater desalination plants, protecting downstream RO membranes.
7. What is its average service life?
With proper maintenance, the module lasts between 5 to 7 years in continuous operation.
8. Is it suitable for containerized water treatment systems?
Absolutely. Its compact form factor and modular compatibility make it ideal for mobile and skid-mounted systems.

Conclusion
The UOT-865G UF Module is a technologically advanced, cost-effective solution for industrial and municipal water treatment systems. Engineered as a one-to-one replacement for Motimo’s UOT-865G, it ensures high-quality water output, robust operation, and long-term value. With its excellent membrane characteristics, ease of integration, and low operating costs, the UOT-865G is a smart choice for system retrofits and new installations alike.
Whether you're targeting potable water, process filtration, or wastewater reuse, the UOT-865G module guarantees reliable performance and clean water—day in, day out.