Technical Paper
A Semi-Continuos Biotreatment Protocol for Chlorinated Ethanes: Application To The Aerospace Industry
1989-07-01
891598
A biological treatment process employing immobilized microbial populations was field tested on contaminated ground water having elevated concentrations of volatile organics, primarily ethylene dichloride (EDC), 1, 1 dichloroethane and 1,1,2 trichoroethane. The process, consisting of a 75 L packed bed reactor containing specific adapted microbial strains immobilized on a porous diatomaceous earth support, was operated in a plug flow configuration over a 14 day period in a semi-continuous mode, i.e., draw and fill. General process measurements included temperature, pH, and titrated chlorides. Microbial adenosine triphoshate (ATP) measurements provided estimates on immobilized biomass performance.
