This is called Waste Valorization and is common in Europe. The idea is to run efficicent incinerators (with good filters on emissions to catch various nasty things we don't want in the air/soil/water and use the energy for heating purposes.
I was just wondering if it is possible to just vaporize the matter and absorb/recycle the pollutants and toxic part and release the rest to the atmosphere. And I saw your post :)