What is the difference between drum rinsates and interior equipment rinsates and their respective P2 practices?
Both are defined as interior wastewater sources (which require treatment prior to discharge); however, they are different sources. Drum rinsates are generated from the cleaning of raw material drums and can typically be used immediately in the product formulation. Drum cleaning also includes the cleaning of shipping containers that may be returned to the shipping facility. The listed P2 practices for drum rinsing include direct reuse, storage and reuse, or use of a countercurrent drum rinsing station. Interior equipment cleaning rinsates are generated from the cleaning of equipment used to formulate, package, or repackage products following the formulation, packaging, or repackaging of the product. Therefore, facilities are more likely to store these rinsates for reuse in the next formulation of the same or compatible product. The listed P2 practice for interior equipment rinsates is storage and reuse.
