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PERFORMANCE EVALUATION OF EXISTING LAGOONS, PETERBOROUGH, NEW HAMPSHIRE
Citation:
Bowen, S. PERFORMANCE EVALUATION OF EXISTING LAGOONS, PETERBOROUGH, NEW HAMPSHIRE. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/2-77/085.
Description:
Although wastewater treatment lagoons are used extensively, little operational data is currently available for evaluating the performance capabilities of lagoons. This report presents data gathered during a one-year period of monitoring the lagoon system at Peterborough, New Hampshire, and compares the treatment plant performance to design loading rates and the Federal Secondary Treatment Effluent Standards. The lagoon system performed very well with excellent removals of suspended solids and fecal coliform bacteria. BOD5 removal was excellent except for four months during the winter when anaerobic conditions occurred under the ice cover and soluble BOD5 levels rose substantially. As a result of this study, it was recommended that induced-air aeration be installed in one of the ponds to decrease the concentration of soluble BOD5 and thus meet the Federal Standards. Other chemical and physical parameters were monitored in the sampling program and the data is presented in the report. (Portions of this document are not fully legible)