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REMOVAL OF DBCP FROM GROUNDWATER. VOLUME 2. FIELD PILOT PLANT OPERATION.
Citation:
Longley, K. E., G. P. Hanna, AND B. H. Gump. REMOVAL OF DBCP FROM GROUNDWATER. VOLUME 2. FIELD PILOT PLANT OPERATION. . U.S. Environmental Protection Agency, Washington, DC, EPA/600/2-91/047 (NTIS 91-234609), 1991.
Description:
Static bottle-point and dynamic Freundlich adsorption isotherm determinations were performed on groundwaters containing different pesticide contaminants: 1, 2- dibromo-3-chloropropane (DBCP), ethylenedibromide (EDB), and 1, 2- dichloropropane (DCP). Field tests were carried out under ambient environmental conditions with natural variabilities in water quality which can affect pilot plant performance. These water quality variabilities included a large variance in temperature during the lengthy period of field operations. Both static and dynamic isotherm data, the latter determined from two systems of different scale, were shown to be indicative of carbon use data for GAC at exhaustion. The finding is significant since static isotherm data are easier and less costly to develop. Carbon use determinations were made for both DBCP and EDB. No decrease in DBCP or change in carbon use could be attributed to bacteria enumerated by the heterotrophic plate counts. However, bacterial metabolic products could be a source of material adsorbing onto the GAC.