Using simulation-optimization techniques to improve multiphase aquifer remediation

Conference · Wed Mar 01 04:00:00 EST 1995

OSTI ID:107181

Finsterle, S; Pruess, K ^[1]

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1. Lawrence Berkeley Laboratory, Berkeley, CA (United States)

The T2VOC computer model for simulating the transport of organic chemical contaminants in non-isothermal multiphase systems has been coupled to the ITOUGH2 code which solves parameter optimization problems. This allows one to use linear programming and simulated annealing techniques to solve groundwater management problems, i.e. the optimization of operations for multiphase aquifer remediation. A cost function has to be defined, containing the actual and hypothetical expenses of a cleanup operation which depend - directly or indirectly - on the state variables calculated by T2VOC. Subsequently, the code iteratively determines a remediation strategy (e.g. pumping schedule) which minimizes, for instance, pumping and energy costs, the time for cleanup, and residual contamination. We discuss an illustrative sample problem to discuss potential applications of the code. The study shows that the techniques developed for estimating model parameters can be successfully applied to the solution of remediation management problems. The resulting optimum pumping scheme depends, however, on the formulation of the remediation goals and the relative weighting between individual terms of the cost function.

• Research Organization: Lawrence Berkeley Lab., CA (United States)
• DOE Contract Number: AC03-76SF00098
• OSTI ID: 107181
• Report Number(s): LBL--37200; CONF-9503110--; ON: DE95014788
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
99 GENERAL AND MISCELLANEOUS
AQUIFERS
COMPUTERIZED SIMULATION
CONTAMINATION
ECOLOGICAL CONCENTRATION
ENVIRONMENTAL TRANSPORT
FLOW MODELS
FLUID FLOW
GROUND WATER
I CODES
ORGANIC COMPOUNDS
REMEDIAL ACTION
T CODES