ABSTRACT
In 1989, a small Midwestern refinery determined that its existing lagoon-based wastewater treatment system was incapable of consistently complying with the requirements of its anticipated NPDES permit renewal. In addition, proposed stringent water quality standards, and other factors had made it clear that either an upgrade or replacement of the existing wastewater treatment system was required. This paper describes the investigation undertaken to determine the most effective system to treat the refinery wastewater, in terms of both cost and performance. The operations performed by the refinery put it in the Topping Subcategory for purposes of USEPA effluent guidelines limitations (40 CFR Part 419)’.
