PHREEQC Add-On

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Navigation: Main Page -> Models -> PHREEQC Models -> PHREEQC Add-On Overview

PHREEQC Overview PHREEQC Model Configuration PHREEQC Direct Calc Model PHREEQC Side Calc Model PHREEQC Reactor

New for Build 138. Currently in BETA - contact SysCAD for demonstrations or further information.

Overview

PHREEQC is a computer program that is designed to perform a wide variety of aqueous geochemical calculations.

  • It is developed and maintained by the United States Geological Survey. (refer to wwwbrr.cr.usgs.gov/projects/GWC_coupled/phreeqc for further information)
  • It is assumed that the user has some familiarity with the theory and use of the PHREEQC program. It is recommended that PHREEQC is installed.
  • This SysCAD add-on (in ScdPHREEQC.DLL) requires the SysCAD "Energy Balance" and "SMDK Runtime" add-ons.
  • PHREEQC is used in a flexible way in Unit or Control models at appropriate locations in a plant model. It is not implemented as a Species Properties Model.

Models

PHREEQC unit models:

  • PHREEQC Model Configuration - Used to define and view various options for the selected PHREEQC database, including management of mapping of SysCAD species list to species list used in PHREEQC.
  • PHREEQC Direct Calc Model - Stand alone unit model to perform side calculations using PHREEQC for predicting aqueous chemistry equilibrium conditions and properties including pH on a user defined PHREEQC stream.
  • PHREEQC Side Calc Model - Stand alone unit model to perform side calculations using PHREEQC for predicting aqueous chemistry equilibrium conditions and properties including pH on a SysCAD stream in the current project.
  • PHREEQC Reactor - Include this model in a SysCAD stream to use PHREEQC to calculate predicted outlet conditions. Functionality is similar to SysCAD Reaction Block and FEM where for a given feed reactions occur with optional heat exchange. The model can be configured in a number of ways for different purposes.

Utility

Generate SysCAD database from PHREEQC Database File