Posted Fri, 05 Jul 2013 16:34:17 GMT by Davide Nascetti
Hello everybody!
We would like to simulate the inhibitor effect of leachate inflow into a municipal WWTP.
Is it possible to insert into the model an inhibition function (in our case it would be the ratio between the maximum nitrification velocity and the nitrification velocity lowered by a toxic compound) and to make it variable accordingly to the leachate flow?

Posted Mon, 08 Jul 2013 10:16:30 GMT by Enrico Remigi WEST Product Owner
Sure, it's possible. In fact, this is not specific to leachate at all and is applicable to the generic situation where one needs to model a toxic/inhibitory effect.

You will probably need to add a toxic or inhibitory component (e.g. S_Tox) to the component vector of your modified category (e.g. ASM1_Tox). Assuming you don't want to do all this manually, you can add a component through the "Manage Components" button in the Matrix Editor.
Then you can certainly define a state variable (at the category level, so again: through the Matrix Editor | Variables tab page) - as well as the relevant parameters used in the expression of the new state variable.
And finally: include the state variable in the kinetic expression of the relevant processes.

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