SFD 2860

Summary

Product identification

DOW™ Ultrafiltration (UF) Modules, Models SFP-2860 and SFD-2860, are designed with high-strength, hollow fiber membranes.

Key features include:

• 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, contributing to long membrane life.
• Hydrophilic PVDF fibers for easy cleaning and wettability, helping to maintain long-term performance.
• Outside In flow configuration for high tolerance to feed solids, which can reduce the need for pretreatment processes.
• U-PVC housing, eliminating the need for costly pressure vessels.
• These modules are an ideal choice for systems with capacities greater than 50 m³/hr (220 gpm).
• The 8-inch diameter module offers the highest effective membrane area of the DOW UF modules, contributing to a more economical membrane system design.
• The shorter, 60-inch length module offers higher efficiencies over a wider range of feed water conditions compared to longer length modules.

Product Specifications:

Mechanical / hydraulic

Dimensions:

• Flow configuration: Outside in, dead end flow

Operating limits

• Filtrate Flux @ 25ºC: 40-120 l/m²/hr (24-70 gfd)
• Flow range: 2.0 – 6.1 m³/hr (9.2 – 26.7 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

Feed water

• TSS (max.): 100 mg/L
• Turbidity (max.): 300 NTU
• Particle size (max.): 300 µ
• Applications: Surface water, seawater, industrial wastewaters, and secondary effluent wastewater.

Product water

• Expected filtrate turbidity: ≤0.1 NTU
• Expected filtrate SDI: ≤2.5

Important Information

• Proper start-up of a UF system is essential to prepare the membranes for operating service and to prevent membrane damage. This includes membrane pretreatment, installation of the membrane modules, instrument calibration, and other system checks. Refer to the product technical manual for detailed procedures.
• 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 and residual air prior to start-up.
• During initial operations, target a permeate flow of 60% of design. Depending on the application, permeate obtained from initial operations should be discarded.
• To prevent biological growth during system shutdowns, it is recommended that preservative solution be injected into the membrane modules.
• NSF/ANSI 61 certified drinking water modules (SFD-2860) require specific conditioning procedures prior to producing potable water. Refer to the product technical manual flushing section for specific procedures and check local regulatory guidelines.

Disclaimer: This summary is based on extracted text and may not include all figures, footnotes, or the latest revisions from the official PDF. Contractual data must always match the OEM PDF revision used on the project.

Official datasheet (PDF)

Lenntech datasheet mirror