WaterSolutions DOW Ultrafiltration Operating Specifications

Fiber Physical Properties Not to be construed as Sales Specifications		Operating Conditions	SI Units	US Units
Configuration (fluid flow)	Hollow Fiber (Outside-In)	Max. Inlet Module Pressure (@ 20°C)	6.25 bar	93.75 psi
Base Polymer	H-PVDF	Operating TMP (Maximum)	2.1 bar	30 psi
Nominal Pore Diameter	0.03 µm	Backwash Pressure (Maximum)	2.5 bar	36 psi
Hollow Fiber ID	0.70 mm (0.028")	Filtrate Flux @ 25°C	40-120 L/m²/hr	24-70 gfd
Hollow Fiber OD	1.3 mm (0.051")	Backwash Flux	100-150 L/m² /hr	59-88 gfd
		Temperature (UPVC limited)	1-40°C	34-104°F
		Operating pH Range	2-11
		NaOCl, Cleaning Maximum	2,000 ppm

Process Conditions	Typical	Maximum
Turbidity, NTU	< 50	300
TSS, mg/L	< 50	100
Particle Size, µ	< 150	300
TOC, mg/L	< 10	40
COD_Mn, mg/L		60
Oil/Grease, mg/L	0	< 2
pH, Continuous	6-9	2-11
pH, Cleaning	1-12	1-12
Temperature	25°C	40°C
Cl₂ Continuous, mg/L	0.5	200
Cl₂ Cleaning, mg/L	2000	5000
Backwash Frequency	Once every 20-60 minutes
Backwash Duration	40-120 seconds
Chemically Enhanced Backwash Frequency	As needed with NaOCl
Typical Cleaning Frequency	1-3 months
Cleaning Chemicals	NaOCl, NaOH, HCl, Citric Acid, Oxalic Acid
Air Scouring Frequency	0 times per day to backwash frequency

Module Properties	SFX-2660		SFX-2860		SFX-2880
	SI units	US units	SI units	US units	SI units	US units
Length - L	1860 mm	73.2"	1860 mm	73.2"	2360 mm	92.9"
Length - L1	1500 mm	59.1"	1500 mm	59.1"	2000 mm	78.7"
Length - L2	1610 mm	63.4"	1630 mm	64.2"	2130 mm	83.9"
Length - L3	1710 mm	67.3"	1820 mm	71.7"	2320 mm	91.3"
Diameter - D	165 mm	6.5"	225 mm	8.9"	225 mm	8.9"
Width - W	250 mm	9.8"	342 mm	13.5"	342 mm	13.5"
Module Surface Area	33 m²	355 ft²	51 m²	549 ft²	77 m²	829 ft²
Volume per Module	16 L	4.2 gal	35 L	9.3 gal	39 L	10.3 gal
Weight (water filled)	41 kg	90 lbs	83 kb	183 lbs	110 kb	220 lbs
Shipping Weight (w/o packaging)	25 kg	55 lbs	48 kg	106 lbs	61 kb	135 lbs
Fibers per Module	5760		9000		10000
Housing	UPVC		UPVC		UPVC

Diagram of ultrafiltration module, showing measurements