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Technology Demonstration Summary. DuPont/Oberlin Microfiltration System. Palmerton, Pennsylvania (EPA/540/S5-90/007)
Citation:
PRC Environmental Management, Inc. Technology Demonstration Summary. DuPont/Oberlin Microfiltration System. Palmerton, Pennsylvania (EPA/540/S5-90/007). EPA/540/5-90/007 (NTIS 92-153410), 1992.
Impact/Purpose:
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Description:
In April and May 1990, the U.S. Environmental Protection Agency (EPA), under the Superfund Innovative Technology Evaluation (SITE) program, demonstrated DuPont/Oberlin's microfiltration system at the Palmerton Zinc Superfund (PZS) site In Palmerton, Pennsylvania. The microfiltration system combines DuPont's Tyvek™ T-980 filter media with Oberlin's automatic pressure filter and Is designed to remove solids larger than 0.1 µ. in diameter from liquid wastes. The mlcrofiltration system demonstrated at the PZS site was evaluated primarily in terms of its ability to remove metals (mainly zinc) and partlculates from the contaminated groundwater on site, while producing a dry filter cake and filtrate that meet applicable disposal requirements. The results showed that the microfiltration system achieved zinc and total suspended solids (TSS) removal efficiencies of about 99.95%, and a filter cake solids content of 41%. The filter cake contained no free liquids, and a composite sample from all the demonstration runs passed both the extraction procedure (EP) toxicity test and the toxicity characteristic leaching procedure (TCLP) test. The filtrate met all National Pollutant Discharge Elimination System (NPDES) permit limits for metals and TSS, but not for pH. The filtrate pH was typically 11.5, while the NPDES upper pH limit Is 9.