Abstract
Laboratory experiments were conducted over a 12 week period to follow the decomposition of sewage sludge in seawater and in sediment-seawater mixtures under aerobic and anaerobic conditions at 4° and 21°C. Results showed that the sewage sludge decomposed more rapidly in the presence of oxygen. Dissolved organic carbon, a major carbon source in sewage sludge, abruptly decreased to very low concentrations in 3–4 weeks in aerobic systems; concentrations of particulate carbon decreased only gradually during the 12 week period. Aerobic conditions at the sewage sludge dump site in the New York Bight apex can promote rapid decomposition of sewage sludge if it is distributed evenly over an area of at least 5.2 km 2 (2 miles).
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