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|Title:||Treatment of low-level contaminated landfill leachate using advanced oxidation processes|
|Authors:||United States. Army. Corps of Engineers. Baltimore District.|
stallation Restoration Research Program (U.S.)
Zappi, Mark E.
Jones, Robert P.
|Keywords:||Advanced oxidation process|
Strasburg Landfill Superfund Site
Hazardous waste sites
|Publisher:||Environmental Laboratory (U.S.)|
Engineer Research and Development Center (U.S.)
Abstract: The Strasburg Landfill Superfund Site is located in Newlin and Bradford townships, Chester County, Pennsylvania. The site was closed in 1980. It was not until 1988 that the site was placed in the U.S. Environmental Protection Agency's National Priority List when leachate runoff into a nearby creek was discovered and contaminants were detected in groundwater and surface water. Chlorinated solvents and simple aromatics were commonly manifested. Treatment technologies for the prevention of further migration of contaminants into the environment are currently under evaluation by the U.S. Army Engineer District, Baltimore. Occasional failures of the current air stripper-system to meet effluent concentrations have occurred, and in accordance with the Record of Decision, an advanced oxidation process (AOP) system should be evaluated as a potential replacement of the air stripping unit. Four bench-scale AOPs were evaluated by the U.S. Army Engineer Waterways Experiment Station as potential options to treat the contammated Strasburg ieachate. These AOPs were irradiation of hydrogen peroxide using a medium-pressure mercury lamp; irradiation of hydrogen peroxide using a low-pressure mercury lamp; irradiation with ozone sparging; and peroxone. Successful treatment of the Strasburg leachate was achieved using the proposed AOPs, with the exception of the low-pressure ultraviolet light irradiation of the hydrogen peroxide system, which showed the slowest contaminant-removal rate. The best dosages of oxidizers for each of the AOPs were identified, as well as the required retention times. The ozonated systems exhibited the best contaminant-removal rates among all the AOPs studied, which may indicate that stripping may have been a factor in these removal increases.
|Appears in Collections:||Miscellaneous Paper|