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UTILIZATION OF TREATABILITY AND PILOT TESTS TO PREDICT CAH BIOREMEDIATION (Battelle)
Citation:
Lutes, C., D. Liles, M. A. Hansen, J. Burdick, S. Suthersan, J. E. Hansen, D H. Kampbell*, AND D. McInnes. UTILIZATION OF TREATABILITY AND PILOT TESTS TO PREDICT CAH BIOREMEDIATION (Battelle). Presented at Battelle Conf. on Biodegradation of Chlorinated Compounds, Monterey, CA, May 22, 2002.
Impact/Purpose:
To inform the public.
Description:
Multiple tools have been suggested to help in the design of enhanced anaerobic bioremediation systems for CAHs:
Extensive high quality microcosm testing followed by small-scale, thoroughly observed, induced flow field pilot tests (i.e. RABITT Protocol, Morse 1998)
More limited microcosm testing (Findlay and Fogel, 2000)*
Site screening using quantitative and qualitative microbiology techniques that do not directly measure contaminant disappearance (i.e. plate counts, direct counts, Phospholipid Fatty Acid [PLFA] analysis, Denaturing Gradient Gel Electrophoresis [DGEE])*
Site screening based on geochemical and hydrological information* followed by limited, natural gradient field pilot testing (Lenzo and Nyer, 2001)*
Pump tests*
This presentation will be based primarily on data generated at an AFCEE/ESTCP funded field demonstration test program at Vandenberg AFB, Lompoc, California, in which the five approaches (marked with an asterisk * above) have been employed:
In addition, multiple study designs for microcosm testing were evaluated using a sample from the same location. Thus, this site forms an ideal basis for evaluating the information content of these different tools and for recommending which tools should be used in routine system design. Results show that for initially aerobic sites short term microcosm testing may fail to predict field performance. Also, no reasonable amount of preliminary testing can predict the disparate performance of individual injection wells observed at field scale, thus careful monitoring and "tuning" of the installed system is essential.