You are here:
SEPARATION OF ALGAL CELLS FROM WASTEWATER LAGOON EFFLUENTS. VOLUME I. INTERMITTENT SAND FILTRATION TO UPGRADE WASTE STABILIZATION LAGOON EFFLUENT
Citation:
Harris, S., D. Filip, J. Reynolds, AND E. Middlebrooks. SEPARATION OF ALGAL CELLS FROM WASTEWATER LAGOON EFFLUENTS. VOLUME I. INTERMITTENT SAND FILTRATION TO UPGRADE WASTE STABILIZATION LAGOON EFFLUENT. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/2-78/033.
Description:
A project to evaluate the performance characteristics of the intermittent sand filter for polishing lagoon effluents was conducted. Techniques described in the literature for summer and winter operation were applied to determine if filter effluents would consistently meet PL 92-500 requirements. It was found that effluent quality is affected by temperature and hydraulic loading rate variations, but that effluents meet very stringent water quality standards. Effluent values of less than 10 mg/l BOD5, 10 mg/l SS and 5 mg/l VSS were consistently met. Organic nitrogen conversion and excellent nitrification were also found to take place within the filters. It was concluded that the intermittent sand filter is an ideal process for upgrading lagoon effluents.