New in version 2.11!
This model is useful for establishing the general features of a new or existing chemical's behaviour, in a sewage treatment plant. It is not intended as an accurate simulation of chemical fate in a specific plant, rather it is a screening level model whcih seeks to estimate the likely proportions of the chemical which leave the system by biodegradation, in sludge, by evaporation, and in the water outflow. These proportions are dictated by both the physical chemical properties of the substance and the characterisitics of the treatment plant. The effect of varying chemical properties such as half-lives and operating conditions can be readily explored.
Features of the STP model software:
Provides a database of chemicals and chemical properties.
Permits temporary additions/changes of chemicals and their properties to a simulation.
Permits permanent additions, changes and deletions of chemicals and their properties to the database.
Provides a database for treatment plants. A single configuration is supplied however, permanent additions, changes and deletions can be made by the user.
Permits temporary additions/changes of STP designs and operating conditions to a simulation.
Provides context-sensitive Help.
Displays and prints the STP model calculations, as performed by the software.
Allows the printing of simulation tables and the summary diagram.
Allows the program results to be saved as a comma separated value (*.csv) file readable by standard spreadsheet software.
This program was based on the following publication:
Environ. Sci. Technol. Vol. 29, p. 1488, 1995 by B. Clark, J.G. Henry, and D. Mackay.
The required input data are:
Treatment Plant Properties:
Model output includes:
Minimum system requirements are an IBM-compatible PC running Windows 98 or XP. This model will not run under Windows NT or 2000.
STP Version 2.10, released August 2004 and Version 1.50, released October 2001 continue to be available.
For non-Windows users the original, DOS-based version is also available.
This software is only available in compiled form. A "readme.txt" file with more detailed technical information is included.
Please read the STP SOFTWARE LICENSE before downloading the software. Use of the software constitutes your agreement to abide by the terms and conditions set out in the license agreement.
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Last updated June 12, 2013.