Plant wide chemical water stability modelling with PHREEQC for drinking water treatment

Plant wide chemical water stability modelling with PHREEQC for drinking water treatment

Van der Helm, A.W.C.
Kramer, O.J.I.
Hooft, J.F.M.
De Moel, P.J.

Civil Engineering and Geosciences

Water Management

2015-02-28

In practice, drinking water technologists use simplified calculation methods for aquatic chemistry calculations. Recently, the database stimela.dat is developed especially for aquatic chemistry for drinking water treatment processes. The database is used in PHREEQC, the standard in geohydrology for calculating chemical equilibria in groundwater. The development of a graphical user interface for PHREEQC in Microsoft Excel has made it possible to easily incorporate complicated chemical calculations for use by technologists of drinking water treatment plants. By making use of PHREEQC the calculations performed are more accurate because of inclusion of ionic strength, ion pairs and most recent determined chemical equilibrium constants. Due to this development it is possible to for instance validation of laboratory measurements and on-line sensors. The use of PHREEQC is demonstrated in a simulation of the chemical water stability at drinking water treatment plant Weesperkarspel of Waternet.

chemical equilibrium
drinking water treatment
modelling
phreeqc
stimela

http://resolver.tudelft.nl/uuid:acd3c631-9d82-499b-95b5-afa6abdc5919

IWC

IWC 2nd International Water Conference: New Developments in IT & Water, Rotterdam, The Netherlands, 8-10 February 2015; Authors version

Institutional Repository

conference paper

(c) The authors