Dow Water & Process Solutions

Operating Specifications

Fiber Physical Properties			Operating Conditions	SI Units	US Units
Configuration (fluid flow)	Hollow Fiber (Outside-In)		Feed Pressure, Maximum at Inlet	3 bar	45 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
CODMn, 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-2680		SFX-2860
	SI units	US units	SI units	US units	SI units	US units
Length - L	1860 mm	73.2"	2360 mm	92.9"	1860 mm	73.2"
Length - L1	1500 mm	59.1"	2000 mm	78.7"	1500 mm	59.1"
Length - L2	1610 mm	63.4"	2110 mm	83.1"	1630 mm	64.2"
Length - L3	1710 mm	67.3"	2210 mm	87.0"	1820 mm	71.7"
Diameter - D	165 mm	6.5"	165 mm	6.5"	225 mm	8.9"
Width - W	250 mm	9.8"	250 mm	9.8"	342 mm	13.5"
Module Surface Area	33 m2	355 ft2	44 m2	474 ft2	51 m2	549 ft2
Volume per Module	16 L	4.2 gal	20 L	5.3 gal	35 L	9.3 gal
Weight (water filled)	41 kg	90 lbs	53 kg	117 lbs	83 kg	183 lbs
Shipping Weight (w/o packaging)	25 kg	55 lbs	33 kg	73 lbs	48 kg	106 lbs
Fibers per Module	5760		5760		9000
Housing	UPVC		UPVC		UPVC

'X' in SFX  = Application (P = Pretreatment, D = Drinking Water)