Evaluation of At-Sea Disposal of FGC (Flue Gas Cleaning) Wastes. Volume 2. Biological Testing and Studies with Stabilized Wastes

摘要

This two-part report is the third of a series on a continuing EPA research program on the feasibility of disposing of flue gas cleaning (FGC) wastes in the ocean. Part 1 gives results of laboratory-scale chemical and biological experiments with untreated (unstablized) FGC wastes designed to provide basic data on environmental impact potential. Part 2 gives results of further chemical and biological tests with a forced-oxidation (sulfate-rich) FGC waste and with stabilized FGC wastes. Results of tests performed to date and related assessment efforts indicate that the conventional (concentrated-dump) at-sea disposal of unstabilized FGC wastes with soil-like properties on the Continental Shalf appears to be environmentally undesirable, unless contradicted by further work. Test results also indicate that at-sea dispersed disposal of sulfate-rich (and, possibly, sulfit-rich) soil-like FGC wastes is sufficiently promising to merit further research. Likewise, results of this and other programs indicate that convetional or concentrated disposal of brick-like stabilized FGC wastes is also promising.