Page 216 - Membranes for Industrial Wastewater Recovery and Re-Use

System design aids 18 5

Table 4.3 Summary of RO CAD package capability
-
Parameter Fluid Systems Film-Tec Hydrdnautics Osmonics
ROPRO ROSA ROdesign Winflows
I
Feedwnter andpows
Ions K*. Na+. NH4+, Ba2+. Ca2'. Mg2+, Sr2+, C1-, F-. HCO,-, NO3-.
S04L-. Si02
Other constituents Fez+. Mn"+, C032- c032- Fe2+. MnL+,
CO32
Addition of fiirtheI Y N N N
constituents?
Blending? Y Y Y N
Process design
Designs Once-through, twin pass, recycle
Other designs Two-st. Two-st.
concentrator concentrator
Array design
Different elements per N/Y N/Y y/y N/Y
bank/stage?
Design flux input! Y N N N
Pretreatment
Acid/base; Y Y Y Y
Other anti-scalants! N N N N
Post-treatment
Acid/base Y N Y Y
Degassing Y N Y Y
Design limits
PmHx (CP parameter) 1.13 Not given 1.20 Not given
APluas. rndx Ilelescuping) Membrane Membrane Membrane Membrane
specs specs specs specs
LSI Y Y Y Y
indicationlwarning?
Nominal flux Membrane Membrane Membrane Membrane
specs specs specs specs
Wizards
Input wizard? Y Y N Y
Array wizard? Y N N N
Costings? Y N Y Y
Helpfiles
Data referencing? Y Y Y Y

commercialised within the next few years. As with most CAD packages, these
will rely on experimental data for validation purposes and their usefulness is
likely to be closely linked to the extent to which they can represent fouling.
Whilst immense progress has been made in understanding fouling mechanisms
over the last 20 years or so, successful prediction of fouling in porous
processes through a consideration of the operating conditions and the
membrane and feedwater matrix characteristics is largely limited to model,
single-component feedwaters.