How to include waste incineration in model

Question

Hello!

I have looked at the handbook (https://greendelta.github.io/openLCA2-manual/waste_modelling.html?highlight=waste#waste-modelling) and this Q&A, but I am still stuck. I have ecoinvent database and am looking at the ODA method. I am modelling a material that has 29kg of general waste that is being incinerated. Is it correct that the 'municipal waste incineration' flow should be both a negative input and a negative output?

Inputs: diethyl ether, iodine, etc  AND municipal waste incineration of negative 29.9kg

Outputs: CH3NH3I AND municipal waste incineration of negative 29.9kg

Answer 1

Easiest is if you model this as a waste flow that goes from the production process to the incineration plant, do not use negative signs then.