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Silver Recovery Units

Serviced quarterly by an EH&S approved vendor to reduce the potential for silver, a toxic, heavy metal regulated by the USEPA, NYSDEC and NYCDEP, from entering the environment in wastewater (e.g., equipment effluent) or as a solid waste (e.g., film media) by-product of image/photo developing activities. Since waste generated in the processing of images/photos contains silver, all waste from these activities must be collected and/or filtered in accordance with the below EH&S waste guidelines.  For all image/photo processing equipment utilizing “wet chemistry” methods (e.g., fixer and developer) these units must be outfitted with equipment to recover silver halide from the wastewater effluent prior to discharge into the New York City Public Sewer System, as required by RCNY Title 15 Chapter 19-03 and Chapter 19-07. More information regarding silver recovery information at Columbia University and CDM is available through EH&S.

Silver Recovery Unit

Silver recovery unit