EquilWin
Presentation of the software
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This software is a
calculation program, according to known and tested method in water
treatment speciality : HALLOPEAU & DUBIN method, to modify and
supplement by the author (French Software Protection : Act 92-597 of
1 July 1992 on the Intellectual Property Code) .
See : J. Hallopeau - " Les équilibres carboniques dans les
eaux " - Terres et Eaux, 1960/1961.
EQUILWIN software can calculate calcocarbonic equilibrium in water.
It allows to characterize a water or a mixture of many waters, to
establish whether a scaling water, aggressive or balance and
determine appropriate treatment to reduce this water balance, or to
test various treatments. The proposed treatments are those that are
usually found on plants for drinking water production. This software
was developed by Pierre RAVARINI, engineer / hydrologist specialist
water treatment and in particular carbonic equilibrium, according to
the principles of the Hallopeau-Dubin method, supplemented by the
author. Development principles and general ergonomics have been
largely inspired by Equil program.
These principles are:
- Management
calculations as "sessions", which allows reuse of previous
calculations
- Able at any
moment in a calculation of return to an earlier stage
- Automatic
controls for data entry
- Feedback to
guide the user on the input data, calculations and
results
- Export a
spreadsheet (Excel-like) data and results in the form of
reports.
The calculations in
EQUILIWIN are mainly based on the formulas of Hallopeau-Dubin. This
is especially known from the use of graphic carbon paper with a
template to trace the evolution of the water after neutralization
treatment. The software reproduces this approach, firstly by
performing all calculations using equations, drawing a carbon graphic
similar to that used today, but it is supplemented by conventional
acid-base chemical equations calculations, precipitation, etc..
Calculations Hallopeau-Dubin-Ravarini method were compared in 2000
(by a large corporation in the field of water) with those of the
method of Legrand-Poirier-Leroy. They identified the domain of
validity of the software EQUIL:
Domain of validity
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natural water
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atmospheric pressure
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mineralization*
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temperature between 0°C and
80°C
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pH is between 4.5 and 9.5
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dry residue: less then 800 mg/L
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conductivity: less then 1055
microSiemens/cm
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resistivity: greater than 950 Ohm.cm
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* The comparison
between the software has determined that the results are quite
comparable to a conductivity of 800 mS/cm and the results are still
acceptable up to 1,055 m S/ cm (gap index saturation of the order of
0.15 pH units). Limit use of the software is indicated for 1055 m
S/cm for conductivity, which covers 99% of waters in France, however
it should be noted calculation is normally done for all input values
(limits indicated).
This version of EQUILWIN therefore meets the following
requirements:
- Perform
calculations in a typical Windows type environment , from
measurements made on-site (at the place of sampling for pH,
temperature and conductivity in the laboratory or production
facility for the Alkalinity and Calcium)
- You can edit
and print reports exported to word processing or spreadsheet (
like Excel )
- Up on screen
and paper carbon graphic
- Used as a
teaching tool for understanding what the calcocarbonic
equilibrium
Provide study and
operators a calculator calc- carbonic equilibrium used in over 90% of
water encountered in France (review the Domains section of validity)
, so help diagnose the quality of the offices water and / or the
control plants .
EQUILWIN is
reliable enough in most cases to monitor water quality in network,
and to conduct treatment in factory. It also provides a good
approximation of treatment system design. Moreover, it is recalled
author may develop upon request, versions adapted to needs of
professional.
EquilWin Software created by Pierre Ravarini .
PR Copyright February 2014
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