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BIOCHLOR: NATURAL ATTENUATION DECISION SUPPORT SYSTEM, USER'S MANUAL, VERSION 1.0
Citation:
Aziz, C. E., C. J. Newell, J. R. Gonzales, P. Haas, T. P. Clement, AND Y. Sun. BIOCHLOR: NATURAL ATTENUATION DECISION SUPPORT SYSTEM, USER'S MANUAL, VERSION 1.0. U.S. Environmental Protection Agency, Washington, DC, EPA/600/R-00/008 (NTIS PB2000-103229), 2000.
Description:
BIOCHLOR is an easy-to-use screening model that simulates remediation by natural attenuation (RNA) of dissolved solvents at chlorinated solvent release sites. The software, programmed in the Microsoft Excel spreadsheet environment and based on the Domenico analytical solute transport model, has the ability to simulate 1-D advection, 3-D dispersion, linear adsorption, and biotransformation via reductive dechlorination (the dominant biotransformation process at most chlorinated solvent sites). Reductive dechlorination is assumed to occur under anaerobic conditions and dissolved solvent degradation is assumed to follow a sequential first order decay process. BIOCHLOR includes three different model types: 1) solute transport without decay, 2) solute transport with biotransformation modeled as a sequential first-order decay process, 3) solute transport with biotransformation modeled as a sequential first-order decay process with 2 different reaction zones (i.e., each zone has a different set of rate coefficient values).
BIOCHLOR was developed for the Air Force Center for Environmental Excellence (AFCEE) Technology Transfer Division at Brooks Air Force Base by Groundwater Services, Inc., Houston, Texas. The Mathematical technique to solve the coupled reactive transport equations was developed by researchers at the Battelle Pacific Northwest National Laboratory.