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The WatSIM™
Series
WatSim was developed to allow a water treater to
readily evaluate the solubility of lead and copper, and scale
potential for common scalants over the broadest of operating ranges
without the necessity for tedious manual calculations. WatSim allows
a water treatment chemist to evaluate the scale potential for common
scalants over the range of water chemistry, temperature, and pH
anticipated for a water.
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WatSim™ combines the
predictive methods for copper and lead outlined in E.P.A. Drinking
Water Research Division technical papers and publications with the
prediction accuracy of "ion association models" to provide
sophisticated water quality simulation. Parameters
modelled include lead and
copper levels, the
scale potential
of common scale forming species, and the prediction of
corrosion rates.
WatSim provides a valuable adjunct to field research evaluations and
may be accepted as computer simulation in lieu of such field
studies. |
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| Entry Level Edition |
| Provides a chemist with the tools
to quickly evaluate a system for scale problems, and to
calculate the impact of pH control for minimizing scale. |
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Field Engineer edition |
| All entry level capabilities, plus
the tools to evaluate popular scale and inhibitor
treatments - enabling a water treater to quickly
compare/choose optimal pH controls, inhibitors, and
ratios. |
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Formulator edition |
| Used by service companies in the
development and optimization of scale and corrosion
control products. All previous capabilities included. |
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Laboratory edition |
| Adds the ability to develop custom
models and provides a tool for translating laboratory
and field data into a readily accessible form for use by
field personnel. |
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Calculation Engine
WatSIM is not a simple spreadsheet model.
Although it calculates simple indices for reference,
French Creek products use a much more powerful and
sophisticated ion association model.
The ion association model improves
the realism and accuracy of indices and extends the
applicable ionic strength for calculations; providing
consistent, reproducible indices for common, and not so
common scale forming species.
Who Uses WatSIM?
WatSIM is used by water treatment
chemists, service technicians, salesman, research and
development chemists, manufacturers of polymers &
inhibitors, ae firms, equipment manufacturers,
independent consultants and other water treatment
professionals charged with potable and wastewater
management.
French Creek is proud to be a part
of the curriculum at several well respected engineering
schools.
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| Ion
Association Models |
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Though simple
indices provide insight they are limited
to simple estimation methods, and do not
take into account phenomena such as
"Common Ion Effects." Ion association
models are based on free ion
concentration rather than total
analytical values.
Ions in water are
typically associated with other ions.
Indices calculated based upon total ion
concentration can be misleading.
Ion association models overcome this by
modeling the concentration of free ions
rather than total analytical values.
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Downloadable Demo
To download, right click the link
below and save.
Install by running the EXE extension
file.
Upon Instillation,
email us your
copy's system ID (given at instillation)
in the subject line for a free
activation key.
DEMO:
WatSIM Free Demo Software
Note: demo software runs for a
limited demonstration period.
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Simple Indices Calculated by WatSim |
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Langelier Saturation
Index
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Ryznar Stability Index
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Practical (Puckorius)
Scale Index
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Larson-Skold
Corrosivity Index
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Calcium Carbonate Precipitation
Potential (C.C.P.P.)
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Maximum
Solubilities
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Copper Solubility
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Includes free ion, phosphates,
pyrophosphate, carbonate, bicarbonate and hydroxides
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Lead Solubility
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Includes free ion, phosphates,
pyrophosphate, carbonate, bicarbonate and hydroxides
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Orthophosphate Solubility |
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Pyrophosphate Solubility |
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Zinc Solubility |
Includes free ion, phosphates, pyrophosphate, carbonate,
bicarbonate and hydroxides |
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Ion Association Model Saturation Levels
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Calcite
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CaCO3
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Aragonite
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CaCO3
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Gypsum
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CaSO4.2H2O
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Anhydrite
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CaSO4
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Amorphous Silica
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SiO2
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Magnesium silicate
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MgSiO3
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Hydroxylapatite
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Ca5(PO4)3(OH)
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Tricalcium phosphate
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Ca3(PO4)2
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Brucite
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Mg(OH)2
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Fluorite
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CaF2
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Strengite
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Fe(PO4)2
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Siderite
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FeCO3
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Amorphous Ferric hydroxide
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Fe(OH)3
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| Standard Treatment Options |
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pH Control Options |
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Acids
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ALKALIS
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66 Be Sulfuric Acid
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Lime
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35% Hydrochloric Acid
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Soda Ash
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Nitric Acid
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Sodium Bicarbonate
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Carbon dioxide
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Caustic Soda
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Caustic Potash
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Inhibitor Models |
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zinc |
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orthophosphate |
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polyphosphate |
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WatSIM Tables
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Source Water Analysis
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Water Chemistry versus Temperature
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Source Water Deposition Potential
Indicators
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Deposition Potential Indicators versus
Temperature
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Water Chemistry versus pH
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Water Chemistry at Target pH,
Temperature, Index, or D.I.C.
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Deposition Potential Indicators versus pH
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Deposition Potential Indicators at Target
pH, Temperature, Index, or D.I.C.
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WatSIM Graphs
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Indices versus pH
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Maximum Pb Solubility versus pH
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Indices versus Temperature
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Maximum Pb Solubility versus
Temperature
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Indices versus pH and Temperature
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Maximum Pb Solubility vs pH and
Temperature
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Saturation Levels versus pH
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Maximum Cu Solubility versus pH
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Saturation Levels versus Temperature
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Maximum Cu Solubility versus
Temperature
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Saturation Levels versus pH and
Temperature
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Maximum Cu Solubility vs pH and
Temperature
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Momentary Excess versus pH
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Inhibitor Level Required versus pH
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Momentary Excess versus Temperature
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Inhibitor Level Required versus
Temperature
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Momentary Excess versus pH and
Temperature
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Inhibitor Level versus pH and Temperature
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WatSIM (Version 6) Pricing
WatSim Field Engineer Edition
The Field Engineer Edition performs all of the
functions and has all of the features of the basic WatSim program.
It adds the ability to select a water treatment product and obtain
dosage recommendations. Each table has an additional line for Dosage
and Predicted Corrosion Rate. An additional graph selection
appears for all two (2D), three (3D) - the Dosage Profile.
The Field Engineer edition can load a Product
File (.PRD) for use in determining treatment rates and developing
dosage profiles. But, alas, the Field Engineer Edition lacks the
ability to edit or create Product Files, or even look at the
ingredients. They must be created (and edited) using a higher member
of the WatSim Series. Both the Formulator and Laboratory Editions
can create and edit Product Files.
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WatSim Formulator Edition
The Formulator Edition adds
the ability to create and edit product files. Creating a Product
File is as simple as filling in a computerized formula (batch)
sheet. Product Files can be password protected to maintain
confidentiality. Files so created can be used by the Formulator
Edition or copied to the \MUNI\INHIB sub-directory on other
computers with WatSim Rx
programs.
Formulator Editions are used extensively by water
treatment companies who wish to use the inhibitor models supplied by
French Creek, by Systems Chemists who wish to evaluate and compare
the treatment programs proposed for their cooling systems, and by
consultants for performing in-depth technical and economic analyses
of aqueous systems.
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WatSim Laboratory Edition
The Laboratory Edition adds the ability to
develop scale inhibitor, corrosion inhibitor, and corrosion rate
predictive models from laboratory data, field data, or a combination
of both. Dosages (or Rates) can be modeled as a function of any
parameters input into the program in their raw form, calculated
indices, and other parameters calculated by the program.
Transforms are available
and can be applied independently to each variable. For example, a
CaCO3
inhibitor might be modeled:
This is, in fact, a common model for scale
inhibitors.
A simple corrosion rate model might be correlated
as follows:
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log(Rate) = f(
log(Ca), 1./RT, log(Cl), log(SO4
),log(Buffer Capacity), pH)
A predictive model for lead or copper solubility
might be modelled:
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log(Cu) = f(
log(D.I.C.), 1./RT, log(Cl), log(SO4
), pH)
Inhibitor models developed by the Laboratory
Edition are output to the .INH files used to develop Product Files.
Raw data is stored in .COR files. Statistics are, of course,
provided on each variable as you develop a model.
Laboratory Editions are used extensively by scale
inhibitor synthesizers, and by major water treatment companies and
by laboratories doing inhibitor and/or corrosion research.
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