[s-cars] Does anyone know of a mediablaster that "recovers" it's spent media?

[chris chambers]

Short questions:

Does anyone know of a mediablaster that "recovers" it's spent media?
Also does anyone recommend a sealer other than Drylock?


Long story:

Gentz,

Due to the pending arrival of our 2nd born I need to get my
butt in gear and get to finishing off our basement.

Why you might ask?

So I will have someplace to move my home office to, cause that
room will become Aria's "big girl" room and Aria's room 
is going to be the nursery.

Said basement has concrete block walls with atleast two coats of paint. 
I am going to finish off the basement using standard 2x4 stud construction,
but feel it would be prudent to seal the block walls with Drylock or
some similiar product. In order to do this I need to strip the walls
of the current paint.

Does anyone know of a mediablaster that "recovers" it's spent media?
Also does anyone recommend a sealer other than Drylock?


Thanks
Chris