+1 for this feature

The ctrl+click doesn't seem to work for me. On an empty tile it does nothing and on one with an item it moves all of those items into the trash slots.

Looks pretty nice!

I needed a bit to understand how it actually works, but in the end it's based on circuit clock and a sort of PWM for activating the pumps only for the time needed, works like a charm

looks really neat
is there a chance of the pollution being rendered in a different way? Friend of mine is partly colourblind and he has a hard time seeing pollution on the map