Transport and Fate of Acetone in an Outdoor Model Stream, Stennis Space CenterNear Bay St. Louis, Mississippi

摘要

Organic substances discharged into streams and rivers as components of wastewateraffect water quality in various ways. For many years, these effects were defined almost exclusively by collective parameters. In 1972, the Federal Water Pollution Control Act known as Public Law 92-500 was passed. Subsequent court cases involving this act resulted in the settlement now commonly known as the Environmental Protection Agency (EPA) Consent Decree (Keith and Telliard, 1979). These legal actions resulted in a change in emphasis from collective parameters to the effects of specific organic compounds on receiving water quality. In particular, processes determining the fate of organic compounds in streams and rivers have received considerable attention. The purpose of the report is to present the results of a study of the transport and fate of acetone in an outdoor model stream located at the Stennis Space Center near Bay St. Louis, Mississippi. The principal element of the experimental design was a 32-day injection of acetone into the model stream. Other elements of the design included injection of glucose for 3 days and injection of a bacteria-nutrient mixture for 1 day in an attempt to stimulate bacterial growth and degradation of the acetone. Rhodamine-WT dye was injected for 1.5 days at the beginning of the test period and for 1.0 day at the end of the test period to determine the overall stream dispersion and traveltime characteristics. t-Butyl alcohol (TBA) was injected for 0.5 day to determine the volatilization characteristics of the stream.