NATO/CCMS Pilot Study Evaluation of Demonstrated and ... - CLU-IN

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NATO/CCMS Pilot Project on Contaminated Land and Groundwater (Phase III) January 2002 soil activators. During the treatment phase, dissolved oxygen, nutrient concentration, temperature, and pH were monitored continuously. After 27 days of treatment, the cleanup criteria were met and the slurry-phase treatment process was closed. The slurry was pumped to a concrete basin where the treated soil was separated from the water by sedimentation. The waster was stored for reuse in the text treatment batch. The treated soil will be reused as fill material. 3.3 Monitoring Program In order to determine the initial PAH concentration, a soil sample was taken from the soil fraction
NATO/CCMS Pilot Project on Contaminated Land and Groundwater (Phase III) January 2002 Project No. 7 Risk Assessment for a Diesel-Fuel Contaminated Aquifer Based on Mass Flow Analysis During Site Remediation Location Project Status Media Technology Type Menziken/Studen, Switzerland Final Groundwater In situ bioremediation Technical Contact Project Dates Contaminants Mathias Schluep Accepted 1997 Petroleum hydrocarbons (diesel fuel, Frohburgstrasse 184 Final Report 2000 heating oil) 8057 Zurich Costs Documented? Project Size Results Available? Switzerland Tel: +41-79-540-5557 mathias@schluep.ch No Yes Christoph Munz BMG Engineering Ltd Ifangstrasse 11 8057 Schlieren Switzerland Tel: +41-1-732-9277 Fax: +41-1-730-6622 E-mail: christoph.munz@bmgeng.ch Josef Zeyer Soil Biology Inst. of Terrestrial Ecology ETHZ Grabenstrasse 3 8952 Schlieren Switzerland Tel: +41-1-633-6044 Fax: +41-1-633-1122 E-mail: zeyer@ito.umw.ethz.ch Project 7 was completed in 2000. 1. INTRODUCTION The studies were aimed to give a scientific basis for an evaluation procedure, allowing us to predict the treatability of a petroleum hydrocarbon (PHC) contaminated site with in situ bioremediation technologies [1]. This includes the description of the risk development with time and the quantification of the remediation efficiency by identifying critical mass flows. The focus of the project was set on the modeling of movement and fate of compounds typically found in non-aqueous phase liquids (NAPLs) such as PHCs in the subsurface. 2. SITE DESCRIPTION At the Menziken site [2] the contaminated aquifer was remediated based on the stimulation of indigenous microbial populations by supplying oxidants and nutrients (biorestoration). Detailed investigations were made from 1988 until 1995. The engineered in situ bioremediation took place from 1991 - 1995. At the Studen site [3] no engineered remedial actions were taken. The investigations started in 1993 and led to a better understanding of the biological processes occurring in the aquifer. It could be shown that intrinsic bioremediation is a major process in the removal of PHC at this site. 34
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NATO/CCMS Pilot Study Evaluation of Demonstrated and ... - CLU-IN

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