The DOW™ Ultrafiltration Modules, constructed with robust hollow fiber membranes, boast excellent features that enable high-performance treatment. With a nominal pore diameter of 0.03µm, they effectively remove bacteria, viruses, and particulates, including colloids, safeguarding downstream processes like reverse osmosis. The modules' PVDF polymeric hollow fibers ensure durability and chemical resistance, extending membrane lifespan. Their hydrophilic nature facilitates easy cleaning and wettability, maintaining long-term performance. The Outside-In flow design tolerates high feed solids, minimizing the need for pretreatment. The U-PVC housing eliminates the need for costly pressure vessels. Ideal for systems with capacities up to 50 m³/hr, the shorter 60-inch length and smaller 6-inch diameter modules offer increased efficiency and compactness. These versatile modules are suitable for various treatment applications, including surface water, seawater, industrial wastewaters, and secondary effluent wastewater.
The DOW™ ultrafiltration (UF) modules are made from high strength, hollow fiber membranes that have excellent features and benefits:
0.03 µm nominal pore diameter for removal of bacteria, viruses, and particulates including colloids to protect downstream processes such as RO
PVDF polymeric hollow fibers for high strength and chemical resistance allows longer membrane life
Hydrophilic PVDF fibers for easy cleaning and wettability that help maintain long term performance
Outside In flow configuration for high tolerance to feed solids that helps reduce the need for pretreatment processes
U-PVC housing, helping to eliminate the need for costly pressure vessels
This module is an ideal choice for systems capacities of 50 m3/hr (220 gpm) or less. The shorter, 60 inch length module offers higher efficiencies over a wider range of feed water conditions compared to longer length modules. The smaller, 6 inch diameter module allows a more compact design for space constrained installations.
DOWTM Ultrafiltration Modules can be used for a wide variety of treatment applications such as surface water, seawater, industrial wastewaters, and secondary effluent wastewater.
Product Specifications
Membrane area | Module volume | Weight
(empty/ water filled) |
Model | Type | Part # | m2 | ft2 | Liters | Gallons | Kg | lbs |
SFP-2660 | Pretreatment | 280931 | 33 | 355 | 16 | 4.2 | 25/41 | 55/90 |
SFD-2660 | NSF/ANSI 61
Drinking water | 324166 | 33 | 355 | 16 | 4.2 | 25/41 | 55/90 |
Figure 1: SFP and SFD 2660 (6-inch diameter)
Figure 2
Properties | | Length | | | Diameter | Width | |
Units | L | L1 | L2 | L3 | D | W1 | W2 |
SI (mm) | 1860 | 1500 | 1610 | 1710 | 165 | 125 | 250 |
Operating Parameters
| SI units | US units |
Filtrate Flux @ 25ºC | 40-120 l/m2/ hr | 24-70 gfd |
Flow range | 1.3 – 4.0 m3/hr | 5.9 – 17.3 gpm |
Temperature | 1-40ºC | 34-104ºF |
Max. inlet module pressure (@ 20ºC) | 6.25 bar | 93.75 psi |
Max. operating TMP | 2.1 bar | 30 psi |
Max operating air scour flow | 12 nm3/hr | 7.1 scfm |
Max backwash pressure | 2.5 bar | 36 psi |
Operating pH | 2- 11 |
NaOCl (max.) | 2,000 mg/L |
TSS (max.) | 100 mg/L |
Turbidity (max.) | 300 ntu |
Particle size (max.) | 300 µ |
Flow configuration | Outside in, dead end flow |
Expected filtrate turbidity | ≤0.1 NTU |
Expected filtrate SDI | ≤2.5 |
Proper start-up of a UF system is essential to prepare the membranes for operating service and to prevent membrane damage. Following the proper start-up sequence also helps ensure that system operating parameters conform to design specifications so that system water quality and productivity goals can be achieved. Before initiating system start-up procedures, membrane pretreatment, installation of the membrane modules, instrument calibration and other system checks should be completed.
Operation guidelines | Avoid any abrupt pressure variations during start-up, shutdown, cleaning or other sequences to prevent possible membrane damage. Flush the UF system to remove shipping solution prior to start-up. Remove residual air from the system prior to start up. Manually start the equipment. Target a permeate flow of 60% of design during initial operations. Depending on the application, permeate obtained from initial operations should be discarded. Please refer to the product technical manual. |
General information | If operating limits and guidelines given in this bulletin are not strictly followed, the limited warranty (Form No. 795-00027) will be null and void. To prevent biological growth during system shutdowns, it is recommended that preservative solution be injected into the membrane modules. |
Regulatory note | NSF/ANSI 61 certified drinking water modules require specific conditioning procedures prior to producing potable water. Please refer to the product technical manual flushing section for specific procedures. Drinking water modules may be subjected to additional regulatory restrictions in some countries. Please check local regulatory guidelines and application
status before use and sale. |
For application cases, please click:https://www.fgwater.com/Industries/
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About Us
FG Water Technologies (www.fgwater.com) is now an organic part of Wuxi Fenigal Science and Technology Co. Ltd., which is a high-tech entity integrating water treatment quipment design, manufacturing, trading and shipment served for main industrial sectors.
HAFE-FG Water Technologies has focused on the research of water treatment technology, equipment development and manufacturing, testing and international shipment etc. We work with many leading large-scale or small-medium original equipment manufacturers in China High-tech Development Zones, and engaged ourselves in R&D, manufacturing, and quality testing.
Our main products include a variety of water purification and different treatment equipment, such as seawater reverse osmosis (SWRO) system, brackish water rever osmosis (BWRO), ultrafiltration (UF)system, Electrodeionization/EDI equipment, media pressure filters and ion exchanger softeners. So far, our company has become a major water treatment equipment supplier for food and beverage industry, pharmaceutical industry, chemical industry, electric power industry, urban water supply industry, municipal and industrial wastewater treatment and more industries, as well as being an exporter to more than 20 countries and regions in Asia, Europe, the Americas, Africa, etc.
OUR CLIENTS
PRODUCTION SYSTEM
Our production system consist of a list of industry-specialized partnership factories accross China. Some of them singularly cover an area of over 10,000 square meters, including 5,000 square meters of workshop and warehouse and 1,500 square meters of office buildings. All of our technical staff has more than 10 years of experience in the design of water treatment systems, so we are able to provide the perfect solution for all kinds of water purification and sewage treatment applications.
Since the establishment, the Company has always regarded quality as the life of our business. We choose the best components only for the production of various water treatment systems. Our systems are easy to use and maintain, and they stays highly reliable even under toughest conditions.