Variability of the Settling Properties of the Activated Sludge Process Under Steady State Conditions |
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... sludge units were used to develop acti- vated sludge microbial cultures at solids retention times in the range from 2 to 15 days . A synthetic soluble subs- trate was used to feed the cultures . The reactors were operated as complete ...
... sludge units were used to develop acti- vated sludge microbial cultures at solids retention times in the range from 2 to 15 days . A synthetic soluble subs- trate was used to feed the cultures . The reactors were operated as complete ...
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... solids . A test period for settling of 43 days was used with the systems grown at 15 , 12 and 9 days solids retention time . Systems at lower retention times failed due to bulking caused by excessive filamen- tous growth some time after ...
... solids . A test period for settling of 43 days was used with the systems grown at 15 , 12 and 9 days solids retention time . Systems at lower retention times failed due to bulking caused by excessive filamen- tous growth some time after ...
Page 115
... retention time . The variability exhibited by the settling proper- ties at solids retention times of 15 , 12 and 9 days is concentrated in the low frequency bands , i.e . , it is due to long period factors ( equal to or greater than 10 ...
... retention time . The variability exhibited by the settling proper- ties at solids retention times of 15 , 12 and 9 days is concentrated in the low frequency bands , i.e . , it is due to long period factors ( equal to or greater than 10 ...
Common terms and phrases
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