Page 230 - Membranes for Industrial Wastewater Recovery and Re-Use

Systrm drsign aids 199

a E
wailable Obect Created Obiects
Contaminants - Contaminant? 5
3focess [fixed flow, & ss
& Colou
& BOD
& COD
P 3 c~ Process [cnted flow) 8
& Temperature
i-i .r Process UnitOps 8
II: Slemprodudon
X Cooling
33 Piewashing
33 Beaching
3T Deying
8 * 11: Fnal hot washing
Ef Fnal cold washing
a Maintenance cleaning
3 '-r Utilitls [vanable flowl: 4
I3 + UtilitySources 1
W Flesh water
El Utility Sinks 3
* Discharge on sewer
4 Discharge on surface water
Dirty discharge
3 Unit Opemtions 4
Central treatment
p Ftltratm technique after pewashing <not in USE
9 RO alter central system <not in use>
.4F UF after final cold washng <not in use,

Figure4.21 Project builder usedin WaterTargrt"

other logistical limitation. The water network obtained with the software is
presented by means of a table, indicating all selected connections between sinks
and sources. A visual presentation of the water network is not provided in
WaterTarget", unlike Aspen Water'@ and Water. Water, although being a
research tool, does provide a graphical presentation of the network, thus
allowing a very quick and easy assessment of the effect of changing constraints
of the design.
Although the methodology for energy pinch was first extended by the UMIST
Process Integration group to water systems, the software developed by this group
has not really developed far beyond the research tool stage, although the Water
software is in a continual state of development with new features being added
regularly. Against this, Aspen Technology and Linnhoff March both entered the
market in 1999 with more user-friendly software than that of the UMIST group,
both groups having benefited from membership of the UMIST research