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Welcome to the NEW JASS!-- a Java based Activated Sludge process Simulator
The old JASS page can be found here.

From this page you can reach our activated sludge process simulator constructed for network usage. The simulator is implemented with 10 zones using the IWA Activated Sludge Model No.1 (ASM1) and a 10 layers settler model. It is possible to simulate pre- and post denitrification systems as well as some step feed strategies. Two other simulators are also avaiable: A simulator for simple bioreactors and a simulator for some basic automatic control strategies. In order to run the simulators you need to have Java Plugin 1.3.1 or a more recent version installed in your web browser.
SIMULATOR REMARKS
JASSeng A simulator for activated sludge processes with nitrogen removal
JASSeng_old An english version for Java Plugin 1.3.1
JASSswe Swedish version
JASSswe_old Swedish version for Java Plugin 1.3.1
Bioreactors A simulator for simple bioreactors
Bioreactors_old A simulator for simple bioreactors for Java Plugin 1.3.1
Reglab A simulator for some basic automatic control strategies
Reglab_old A simulator for some basic automatic control strategies for Java Plugin 1.3.1

 

Some pictures from recent courses:
    Bilder från kursen Styrning och reglering av avloppsreningsverk -2002
    Bilder från kursen Styrning och reglering av avloppsreningsverk -Oktober 2001
    Bilder från kursen Styrning och reglering av avloppsreningsverk -April 2001
    Bilder från kursen Styrning och reglering av avloppsreningsverk -Oktober 2000

From time to time, we do special versions of JASS for specific wastewater treatment plants. If you are interested in simulating your plant, please contact Bengt Carlsson: bc@syscon.uu.se.

If you have comments or ideas how to improve the simulator, please contact Pär Samuelsson: psa@syscon.uu.se  

Interesting links and JASS related material to download or view (pdf-format, Acrobate Reader 3.0 is needed):
    Manual
    Example of lab instructions for the simulator Bioreactors
    Example of lab instructions for JASS
    Master thesis describing JASS in detail
    Link to our research in wastewater treatment
    Link to our course in Wastewater treatment
   

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Department of Systems and Control, Uppsala University | URL http://www.SysCon.uu.se
Last updated: 02-09-04 by Mats Ekman