Variability of the Settling Properties of the Activated Sludge Process Under Steady State Conditions |
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15 days 30 lags 40 Figure 9 days activated sludge process activated sludge systems aeration basin autocorrelation bioflocculation biomass Bisogni and Lawrence bulking sludge chi-square distribution clarifier cm/min coefficients of variation Comparative graph completely mixed concen cyc/day days 30 days and 30 days SRT decrease Dispersion as function Eckenfelder Effluent COD effluent quality Effluent SS effluent suspended solids effluent variability feed Figure 36 Figures 17 filament length floc flocculation increase Influent and Effluent mg/l microbial population microorganisms mixed cultures mixed liquor ml/g MLSS and Effluent Nalgene observed operation organic loadings overflow rate parameters percent dispersion performance polymer reactor settleability settling behavior settling characteristics settling properties Sezgin sludge volume index solids retention spectra at SRT Spectral Density spectrum analysis SRT's SS concentration SS spectra steady-state substrate suspended solids concentration tion total variance treatment plants variability of settling vated sludge wastewater wasting zone settling velocity