Product Introduction
The SFD-2660 Industrial Grade Ultrafiltration (UF) Module is a premium solution for advanced water treatment, designed to deliver the same performance and configuration as the renowned DUPONT DOW SFD-2660 UF module. Developed with cutting-edge hollow fiber membrane technology, this module is engineered for robust, long-term operation in both municipal and industrial water treatment systems.
With a focus on efficiency, compatibility, and reliability, the SFD-2660 module features high-quality PVDF (polyvinylidene fluoride) hollow fibers, offering exceptional mechanical strength, high chemical resistance, and superior filtration precision. It is perfectly suited for retrofit applications and OEM system integration, making it a cost-effective alternative for projects seeking quality equivalent to the DOW/DUPONT standard.

Working Principle
Ultrafiltration is a membrane-based separation process that removes contaminants such as suspended solids, bacteria, viruses, colloids, and macromolecules from water. The SFD-2660 UF module operates on a “dead-end” or “outside-in” flow mechanism, which ensures a stable and consistent output of clean water while reducing membrane fouling.
Process Flow:
1. Feed Water Entry: Untreated or pre-treated water enters the outer shell of the module.
2. Membrane Separation: Water flows from the outside of the hollow fibers to the inside (lumen), with the membrane acting as a selective barrier.
3. Contaminant Rejection: Particles larger than the 0.03 μm pore size are retained on the membrane surface.
4. Permeate Collection: Purified water (permeate) exits from the inner lumen of the fibers.
5. Cleaning Cycles: Backwash and chemical cleaning cycles are triggered periodically to maintain high performance and extend module life.
This filtration method minimizes energy usage and maximizes membrane utilization with minimal operating pressure.

Key Features
· ✅ DUPONT DOW SFD-2660 Equivalent: Compatible in all aspects including dimensions, connections, and performance specs.
· ✅ Advanced PVDF Membrane: Offers superior fouling resistance, mechanical strength, and long-term reliability.
· ✅ Precision Filtration: Removes particles as small as 0.03 microns, including bacteria and colloidal matter.
· ✅ Energy Efficient: Operates at low pressure, reducing power consumption.
· ✅ Robust Mechanical Structure: High tolerance to temperature, chemical exposure, and pressure fluctuations.
· ✅ Easy Integration: Plug-and-play design for retrofit or new installations.
· ✅ Long Operating Life: Up to 5 years with proper operation and maintenance.
· ✅ Simple Maintenance: Routine backwashing and CIP (Cleaning-In-Place) minimize downtime.

Technical Parameters
Specification | Value |
Model | SFD-2660 |
Membrane Material | PVDF (Polyvinylidene Fluoride) |
Configuration | Hollow Fiber |
Nominal Pore Size | 0.03 μm |
Membrane Area | 77 m² |
Fiber Outer Diameter | 1.3 mm |
Fiber Inner Diameter | 0.7 mm |
Filtration Mode | Outside-in |
Operating Pressure | 0.1–0.3 MPa |
Maximum Pressure | 0.4 MPa |
Operating Temperature | 5–45°C |
pH Range (Operation) | 4–10 |
pH Range (Cleaning) | 2–11 (short-term 1–13) |
Backwash Interval | Every 30–60 minutes |
Cleaning Chemicals | NaOCl, NaOH, Citric Acid, etc. |
Housing Material | ABS, FRP, PVC, or Stainless Steel |
Connection Type | Standard DOW SFD-2660 Compatible Ports |
Applications
The SFD-2660 UF module offers high reliability and performance across diverse applications, including:
1. RO Pretreatment Systems
Removes turbidity and microorganisms to reduce SDI and protect downstream reverse osmosis membranes.
2. Municipal Drinking Water Plants
Removes suspended solids and pathogens from surface water or groundwater to ensure safe drinking water production.
3. Industrial Process Water
Delivers consistent, clean water for manufacturing processes in electronics, food and beverage, and pharmaceuticals.
4. Wastewater Reuse and Recycling
Filters treated sewage or industrial wastewater for reuse, reducing discharge and water consumption.
5. Desalination Plants
Acts as an effective pretreatment step before seawater reverse osmosis (SWRO) systems, enhancing membrane longevity.
6. Cooling Tower Water Treatment
Improves water quality in recirculating systems, minimizing scale and biological growth.
7. Textile and Dyeing Industry
Removes color, fibers, and chemical residues from effluent, enabling compliance with environmental regulations.

FAQ
1. Is the SFD-2660 module compatible with DOW/DUPONT SFD-2660?
Yes, it is a 100% equivalent alternative, designed to match the dimensions, performance, and hydraulic specifications of the original.
2. What is the typical service life of this UF module?
The module typically lasts 3–5 years, depending on the feed water quality, cleaning schedule, and operating conditions.
3. What cleaning procedures are required?
Routine backwash every 30–60 minutes and CIP every 1–2 weeks using approved chemicals will ensure optimal performance.
4. Can this UF module remove viruses and bacteria?
Yes. The 0.03 μm pore size is effective in removing over 99.99% of bacteria and viruses from the water.
5. Can it be used for seawater pretreatment?
Absolutely. The PVDF membrane is chemically resistant and suitable for brackish or seawater filtration.
6. How is this module installed into an existing system?
It features standard end caps and fittings identical to DOW's original, allowing for quick and seamless integration.
7. What is the maximum recovery rate of this system?
With proper system design, the recovery rate can reach up to 95%.
8. Do you offer technical support for OEMs or integrators?
Yes, we provide full engineering support, drawings, and documentation for both OEMs and end-users.

Conclusion
The SFD-2660 Industrial Grade UF Module is a reliable and high-performance solution for industries looking to maintain the quality and consistency of their water treatment systems while minimizing costs. Built as a direct replacement for the DUPONT DOW SFD-2660, this module provides flexibility, durability, and excellent filtration performance.
From municipal treatment plants to industrial wastewater systems, the SFD-2660 module ensures operational efficiency, ease of integration, and long-term reliability. With competitive pricing and full technical support, it's the smart alternative for your next ultrafiltration upgrade or installation.