MTBE Remediation Using Hollow Fiber Membrane and Spray Aeration Vacuum Extraction Technologies

摘要

This report summarizes the results of a demonstration of selected technologies used to treat groundwater contaminated with dissolved MTBE and other VOCs. The specific technologies include Spray Aeration Vacuum Extraction (SAVE), developed by Remediation Service International (RSI), and Hollow Fiber Membrane (HFM) degasification, developed by the University of California at Santa Barbara. The test was conducted at the Hydrocarbon National Test Site located at the Naval Construction Battalion Center at Port Hueneme, California, between 21-25 June 1999. The project scope consisted of demonstrating the combined SAVE and HFM systems at the field scale for treating groundwater contaminated with MTBE and other gasoline components. The main objectives were to: (1) meet a target remediation goal of 5 ug/L for MTBE (the secondary drinking water standard for California water supplies); (2) quantitatively define the component-by- component performance in terms of removal efficiency and mass transfer coefficient for each technology; (3) evaluate these treatment technologies from a cost-and-performance perspective; and (4) develop a set of recommendations for routine application of this combination of remediation technologies. During the 5-day demonstration effort, approximately 34,200 L (9, 000 gallons) of contaminated groundwater was treated while continuously meeting the project's MTBE clean up goal of 5 ug/L. Specific operation and performance details are presented and discussed, as well as suggestions for design improvement.