Take a close look at a Swiss garbage incineration plant. You'll notice that a very big part of the whole building consists of filter systems.

As for Tetra Pak: I use them to stuff stuff (ha ha) into them to reduce the volume, which again reduces the expenses for bags. You wouldn't believe how much you can squeeze into a 1 liter Tetra Brik. When my American Other Half is in the USA and I am here, I fill 1 liter with non-recyclable garbage -- every other week, mind you. That means I'd need way more than a year to fill one 35 liter bag. I think that's a pretty modest environmental footprint.