Record Display for the EPA National Library Catalog
RECORD NUMBER: 292 OF 728
|OLS Field Name||OLS Field Data|
|Main Title||Modifications to reduce drag out at a printed circuit board manufacturer /|
|CORP Author||Minnesota Technical Assistance Program, Minneapolis.;Environmental Protection Agency, Cincinnati, OH. Risk Reduction Engineering Lab.|
|Publisher||Risk Reduction Engineering Laboratory, Office of Research and Development, U.S. Environmental Protection Agency,|
|Report Number||EPA-R-815821; EPA/600/R-92/114|
|Subjects||Printed circuits industry--Waste disposal--United States. ; Metals--Finishing--Waste disposal. ; Printed circuits industry--United States--Waste disposal|
|Additional Subjects||Pollution abatement ; Metal finishing ; Liquid wastes ; Copper ; Revisions ; Water conservation ; Rinsing ; Manufacturing ; Printed circuits ; Sampling ; Chemical compounds ; Withdrawal ; Cost analysis ; Industrial wastes ; Source reduction ; Waste minimization ; Drag out ; Waste Reduction Innovative Technology Evaluation|
|Collation||v, 38 pages : illustrations ; 28 cm|
The MnTAP/EPA Waste Reduction Innovative Technology Evaluation project at Micom, Inc., demonstrated the waste reducing capability of two simple rinsing modifications on an etchant and an electroless copper process. The simple, low (or no) cost, low technology changes that were made were: (1) slowing the withdrawal rate of the racks containing the printed circuit boards as they are pulled from concentrated process tanks and (2) combining an intermediate withdrawal rate with a longer drain time over the process tanks before transfer to the rinse tanks. As compared to baseline sampling, both modifications reduced drag out by 41 to 52% of concentrated copper containing bath solutions into the rinse water systems that followed the bath tanks. Economic savings in avoided treatment and disposal costs of $3120 to $3350 per year were also shown.
Shipping list no.: 92-0513-P. "July 1992." Includes bibliographical references (page 22). "EPA/600/R-92/114." Microfiche.