Following are a set of P2 options you may wish to implement. No option is perfect for everyone, but sometimes options
that have worked at one facility can work at yours. They might also serve as inspiration.
Reviewed Foundry Options
Options below have reviewed by pollution prevention specialists. They are commonly recommended and implemented
A substantial amount of sand contamination comes from mixing the various foundry waste streams with waste sand. The overall amount of sand being discarded can be reduced by implementing the following waste segregation steps: • Replumbing the dust collector ducting on the casting metal gate cutoff saws to collect metal chips for easier recycling • Installing a new baghouse on the sand system to separate the sand system dust from the furnace dust. Installing a new screening system or magnetic separator on the main molding sand system surge hopper to continuously clean metal from the sand system • Separate nonferrous foundry shot blast dust (often a hazardous waste stream) from other nonhazardous foundry and sand waste streams. • Installing a magnetic separation system on the shotblast system to allow the metal dust to be recycled • Changing the core sand knockout procedure to keep this sand from being mixed in with system sand prior to disposal
Unreviewed Foundry Options
Options below have not been reviewed by pollution prevention specialists. They are commonly recommended and
implemented for facilities.