Virginia Contracting Activity, P.O. Box 46563, Washington, D.C. 20050-6563

S -- ASSISTANCE IN THE REMOVAL OF TRACE CADMIUM Sol 031095 Contact Point, Cheong Chon (202) 373-8416/James Dashiell (202) 373-2947. The Government does not intend to award a contract on the basis of this Request for Information (RFI) or to otherwise pay for the information solicited. The RFI is issued for the purpose of assessing the availability of assistance concerning the removal of trace cadmium from a highly viscous photographic chemical wastestream. Characteristics of this waste stream are a high pH (approx. equal to 10.8), a large viscosity (approx. equal to 18,000 centipoise), specific gravity of 1.05 and high levels of otherdissolved solids. The viscosity of the wastestream greatly complicates the use of traditional metallic precipitation processes (i.e., hydroxide, sulfide, etc.). Currrently, investigating the use of enzymatic, biological or chemical agents to destroy the natrosol component and allow for use of precipitation processes. The Government is seeking assistance in the conversion of the viscous wastestream to a liquid to allow for the effective removal of leachable cadmium. Also the Government is seeking assistance in the selection, installation, and maintenance of a metals treatment system designed primarily to remove cadmium, but capable of being modified to address additional heavy metals. The Virginia Contracting Activity plans to release the RFI on or about 09 March 1995. All responses shall be submitted to the Virginia Contracting Activity, P.O. Box 46563, ATTN: DAP-2A, Cheong Chon, Washington, D.C. 20050-6563 within 15 days from date of publication of this announcement. (044)

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