For the most part people are becoming more responsible about not littering. I don't think there is enough volume to setup recycling centers.
We always preach the "pack out what you packed in" rule.
There are garbage bins at the meeting and camping areas.
Not sure I'd want to get into micro managing the refuse by separating plastics, glass, paper, etc... In the bush.
That is up to the individual and an easier task to do once back at home.