Will the Atmospheric Processor from TASC remove 50% toxic hazard?

I have a cryovolcanic world named "FROZEN HELL" and it's got the big toxic atmosphere hazard. I'm using [0.96a] Terraforming and Station Construction (v8.4.5) and I built an atmosphere processor - but it hasn't changed the hazard. Does this take time? It's been about 3 months since I built it.

I remember this mod used to have a text based UI when I clicked on a planet that allowed me to start terraforming projects, but somebody mentioned to me that the UI was integrated with the regular build menu.

Am I doing something wrong, or forgetting something? I just want my world to be a little less toxic.