There are new designs that can be recycled:

https://www.fastcompany.com/90674645/this-giant-wind-turbine-blade-can-be-recycled

And old blades can be reused to make pedestrian bridges, etc:

https://www.fastcompany.com/90727497/in-ireland-old-wind-turbine-blades-are-being-used-to-build-bridges

But neither is happening at a large scale