Source Emissions Testing of the Air Stripping Process, Vance Air Force Base, Oklahoma

At the request of HQ ATCDEEV through HQ ATCSGPB, source emissions testing for methylene chloride emissions in the air stripping tower vent and tower influent and effluent was performed at the pretreatment facility at Vance AFB on 21-25 May 90. Testing was conducted to provide data for the air quality permit to operate the pretreatment facilitys air stripping tower as required by the Oklahoma State Department of Health. Results show the plant has operational problems, based on the percent removal calculations from the wastewater stream. The pretreatment plant is also not meeting the Federal pretreatment standard limits for methylene chloride from a new facility treating metal finishing waste 40 CFR 433.17. Recommendations included 1 optimizing the plant operations by determining proper coagulant dosage and cleaning the stripping tower 2 contacting the manufacturer to determine the design efficiency of the stripping tower if not efficient enough, additional treatment such as carbon absorption needs to be added and 3 completing another round of emissions testing after the plants operation has been optimized.