On a blasting job site, the abrasive must be recovered out of the tank or structure that you are blasting before you can paint, typically this is via vacuum recovery. There are two main types of vacuum recovery systems.
Grit Recycling trailers
These are predominately used in the bridge and water tank industry, where the contractor is blasting with steel grit and they vacuum up all the steel grit constantly throughout the project.
these systems are designed to remove the abrasive out of the blasting area and collect it in a dropout hopper ready for disposal.