High-Performance PVDF Ultrafiltration Modules for Large-Scale

PVDF ultrafiltration membrane

Think of a filter that can only detect microscopic pollutants but allow throughput to be high like providing your process with a sixth sense. At Hinada we develop membrane modules which achieve just that, with durability as well as predictable performance on large-scale water treatment.

The PVDF ultrafiltration membrane in our range is designed for systems above 10 m3/hour and offers reliable pore-level separation for surface water, seawater pretreatment, and industrial wastewater applications.

PVDF UF Membrane (NM-UF-2860)

Model: NM-UF-2860

Fiber inner/outer diameter: 0.6 / 1.2 mm

Effective membrane area: 52 m²

Dimension: Dia: 225 mm; Length: 1860 mm

Design Flux: 2000–5500 L/h

Hollow fiber material: PVDF

Description:

Description:

The NM-UF-2860 type is a PVDF UF module that is specifically planned to be used in industrial projects with 10m3/hour capacity and above. It is very similar to the name of similar-capacity modules and suits well when the operators require a small footprint with a large area of membranes. This PVDF ultrafiltration membrane provides outside-in hollow fiber filtration and supports cross-flow or dead-end operation depending on the system.

Why choose this module?

• The module has a large membrane area (52 m2) which enhances the economy of the system.
• The PVDF ultrafiltration membrane offers long-term hydraulic stability in high-throughput setups.
• Strong and hollow fibers of PVDF can be used in a wide pH span (1–12) and in the presence of residual chlorine.
• Design flux 2000–5500 L/h assists systems between pilot and large-scale systems.
• It is used in surface water, seawater pretreatment and industrial wastewater as well as secondary effluent polishing.

Technical snapshot — NM-UF-225 and NM-UF-200 comparisons

NM-UF-225 (PVDF)

• I/O diameter: 0.6/1.Concurrent 1.2 mm
• Pore size: 0.06 μm
• Housing: UPVC
• Area: 52 m²
• Design flow rate: 2000–5500 L/h

NM-UF-200 (PVDF option)

• Diameter of hollow fibers: 0.6/1.2 mm
• Filtration method: Outside-in
• Effective membrane area: 38 m²
• Design flow rate: 60–160 L/m²·h

Performance highlights

• Suspended matter >2 μm: 100% removal using appropriate system design.
• Organics removal: up to 99.99% under recommended conditions.
• Output turbidity: ≤0.2 NTU, suitable for downstream RO pretreatment.

How this fits into a system

These modules are used to give predictable quality of permeate and assure SDI control downstream processes in case of a 1000 m3/day reference UF system. The PVDF ultrafiltration membrane’s higher membrane area and outside-in filtration make it a strong choice where feed variability or higher turbidity is expected.

Maintenance and service

• Routine backwash and periodic CIP maintain flux and recovery.
• Use the recommended PVDF ultrafiltration membrane modules for easier module swaps and consistent spares management.
• Tolerates continuous residual chlorine up to 100 PPM (interval up to 200 PPM) as per module specification.
• Packaging and module housings use industry-standard materials to simplify replacement and retrofit.

PVDF vs. PVC hollow fibers — quick note

Hollow fibers made of PVDF have better tolerance to anti-fouling and higher flow rates when compared to the PVC based ones with higher turbidity feeds. Use PVDF where there is a requirement of variability in feed or increased chemical resistance. Operators in the difficult feed conditions should specify the appropriate module variant, which will reduce the downtime and operational expenditure will be predictable.

FAQs

Q: What is the frequency with which backwash should be arranged?

A: Cross-flow systems should be emptied every 30 minutes on average; the time taken is usually 30–60 seconds.

Q: Can these modules be used to treat seawater?

A: Yes — with good pre-filtration and system design the modules are effective in seawater RO pretreatment.

Q: What are the recommended chemical cleaning agents?

A: CIP is normally done with NaClO and NaOH liquids, as directed by the manufacturers.

Get in Touch — Your Project Starts Here

Should you require module sizing, system layout or pricing, please call on our technical staff at Hinada to advise you about your project and provide you with a formal quote. Questions may be sent via email to info@hinada.com or to our sales department to organize a technical discussion. Ask to get a datasheet or consult an appointment.

At Hinada we integrate practical product data with practical service so as to assist clients into choosing the correct modules to apply in their applications.

Read Also: **Understanding Ultrafiltration Membranes: Benefits, Applications, and Technology**