Transport of Sewage Sludge From the 106-Mile Site - Results From an October Survey

Autor: Carlton D. Hunt, Wayne R. Trulli, Scott E. Mcdowell, David P. Redford, Damian Shea, Robert E. Hillman, Tom Berger, Doug Pabst
Rok vydání: 1992
Předmět:
Zdroj: Chemistry and Ecology. 7:195-231
ISSN: 1029-0370
0275-7540
DOI: 10.1080/02757549208055441
Popis: Approximately 8 million tons of sewage sludge were disposed of annually at the 106-Mile Deepwater Municipal Sludge Dump Site (106-Mile Site) between 1987 and 1990. Beginning in 1988 and continuing to the present, the focus of monitoring at the 106-Mile Site moved towards improved understanding of the fate of the sludge. A survey conducted in October 1989 was designed to (1) detect the presence of any sludge particles that settle rapidly following disposal, (2) determine if sludge could be detected in the surface waters at locations away from the immediate disposal site, and (3) determine if water quality was degraded, by assessing whether the Environmental Protection Agency's marine water quality criteria were being exceeded. The survey showed that the sludge does have a rapidly settling component composed of organic floc. mineral grains, and other heavy, gritlike particles, all of which are relatively large. These particles may settle at rates of between 8 and 180 m h−1 and may reach the sea flo...
Databáze: OpenAIRE