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Report of the Steering Committee
Aerobic Biological Treatment ProcessesPercolating Filters
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acetate acid activated sludge activated-sludge plant activated-sludge process aeration ammonia anaerobic anaerobic digestion average biodegradability biological cadmium calculated cell CEng cent chemical chloroform ciliate concentration copper crude sludge culture detergent digested sludge dilution rate discharge dissolved oxygen domestic sewage effect effluent estuary experiments filtration FInstWPC fish flocculation flow glucose Grafham Water growth rate hard water high-rate increase indicated investigation Lea Marston measured medium metals method mg/l mixed liquor nitrification nitrogen observed obtained operation organic carbon organic matter outfall oxidized nitrogen percolating filter period pH value phenol population predicted proportion protozoa rainbow trout range removal Report for 1968 respiration rate River Authority River Trent samples settled sewage sewage effluent slime solids content soluble specific substrate sulphide surface suspended matter suspended solids Table tank temperature tests toxicity tracer treated Trent waste waters Water Pollution Water Pollution Research wet air oxidation