Lenntech
Fact Sheet
info@lenntech.com Tel. +31-152-610-900
www.lenntech.com Fax. +31-152-616-289
Sugar Processing Sugar
Concentration Duracon*
RO-3 4040C-50P
The Duracon* family of proprietary thin-film reverse
osmosis membrane elements are characterized by
high sodium chloride rejection and a smooth, fouling-resistant membrane surface. The S-Series
membrane has an average rejection of 99.0% on
2000 ppm NaCl at 25°C and 425 psig (2,930 kPa).
The Duracon RO-3 4040C-50P Elements provide
high rejection of sugars and low molecular weight
organic constituents at operating pressures up to
1,200 psi (8,274 kPa). This element is designed for
high crossflow, daily CIP and the ability to handle
suspended solids and periodic hot-water sanitation,
while still maintaining element integrity. They are
typically used for concentrating sugar in foodrelated processes. Applications include protein and
sugar concentration, lactose recovery and waste
water applications requiring reduction of BOD.
Figure 1: Element Dimensions Diagram
Table 3: Dimensions and Weight
Dimensions, inches (cm)
Dry Boxed
Model
Duracon RO-3 4040C-50P
A
B
C
Weight
lbs (kg)
40
(101.6) 1
0.625
(1.6)
3.98
(10.11)
12
(5.4)
1
Length includes ATD’s (not shown)
Table 4: Operating and Design Parameters
Membrane
S-Series, thin-film membrane (TFM*)
Typical Operating Pressure
200-800 psig (1,379-5,516 kPa)
The Duracon RO-3 4040C-50P Elements feature a
Durasan* patented outerwrap, patented feed spacers and polysulfone parts.
Typical Operating
Process Flux
7-18 GFD (11.9-30.6 LMH)
Clean Water Flux (CWF)2
16-18 GFD (27.2-30.6 LMH) @ 425 psig
Maximum Pressure
1200 psig (8,274 kPa)
Table 1: Element Specification
Maximum Temperature
Model
Duracon RO-3 4040C-50P
Spacer
Mil (mm)
Active Area
ft2 (m2)
Part
Number
50 (1.27)
62 (5.76)
1228939
2
Table 2: Pressure Drops
Maximum
Pressure Drop
∆P - psig (kPa)
Sanitization Temperature
Elements per Pressure Vessel
1
2
3
4
5
15 (103)
30 (207)
45 (310)
60 (414)
60 (414)
122°F (50°C)
3
194°F (90°C)
Recommended pH
Operating Range 3.0-10.0,
Cleaning Range 2.0-11.5
Chlorine Tolerance
500 ppm-hours, dechlorination recommended
Clean water flux (CWF) is the rate of water permeability through the membrane
after cleaning (CIP) at reproducible temperature and pressure. It is important to
monitor CWF after each cleaning cycle to determine if the system is being
cleaned effectively. CWF can vary ± 25%.
3
Hot Water Sanitization Recommendations: Elements should be cleaned with
approved CIP procedure and flushed with fouling-free clean water before sanitization process. Feed pressure during sanitization should not exceed 40 psi and
the crossflow should not cause higher than 2 psi pressure drop per element.
Heating rate to sanitizing temperature should not be higher than 5°C/min and
cool down rate should be the same.