Performance evaluation of an anoxic/oxic activated sludge system: Effects of mean cell residence time and anoxic hydraulic retention time

1986 ◽  
Vol 28 (1) ◽  
pp. 7-15 ◽  
Author(s):  
Wen K. Shieh ◽  
Chiu Y. Chen
Keyword(s):  
Performance Evaluation ◽  
Activated Sludge ◽  
Residence Time ◽  
Retention Time ◽  
Hydraulic Retention Time ◽  
Activated Sludge System ◽  
Cell Residence Time

Effect of Hydraulic Retention Time on the Treatment of Pulp and Paper Industry Wastewater by Extended Aeration Activated Sludge System

2021 ◽  
Author(s):  
Ahmad Hussaini Jagaba ◽  
Shamsul Rahman Mohamed Kutty ◽  
Lavania Baloo ◽  
Azmatullah Noor ◽  
Sule Abubakar ◽  
...  
Keyword(s):  
Activated Sludge ◽  
Retention Time ◽  
Hydraulic Retention Time ◽  
Paper Industry ◽  
Pulp And Paper Industry ◽  
Pulp And Paper ◽  
Activated Sludge System ◽  
Industry Wastewater

Effect of Hydraulic Retention Time on the Performance of High-Rate Activated Sludge System: a Pilot-Scale Study

2017 ◽  
Vol 228 (11) ◽  
Author(s):  
H. Guven ◽  
M. E. Ersahin ◽  
R. K. Dereli ◽  
H. Ozgun ◽  
D. Sancar ◽  
...  
Keyword(s):  
Activated Sludge ◽  
Retention Time ◽  
Hydraulic Retention Time ◽  
Pilot Scale ◽  
High Rate ◽  
System A ◽  
Activated Sludge System

Effect of hydraulic retention time on micropollutant biodegradation in activated sludge system augmented with acclimatized sludge treating low-micropollutants wastewater

Chemosphere ◽  
2019 ◽  
Vol 230 ◽  
pp. 606-615 ◽  
Author(s):  
Jarungwit Boonnorat ◽  
Alongkorn Kanyatrakul ◽  
Apichai Prakhongsak ◽  
Ryo Honda ◽  
Pornpan Panichnumsin ◽  
...  
Keyword(s):  
Activated Sludge ◽  
Retention Time ◽  
Hydraulic Retention Time ◽  
Activated Sludge System

Kinetic evaluation of nitrification performance in an immobilized cell membrane bioreactor

2016 ◽  
Vol 73 (12) ◽  
pp. 2904-2912 ◽  
Author(s):  
D. Güven ◽  
E. Ubay Çokgör ◽  
S. Sözen ◽  
D. Orhon
Keyword(s):  
Residence Time ◽  
Retention Time ◽  
Model Calibration ◽  
Membrane Bioreactor ◽  
Hydraulic Retention Time ◽  
Membrane Bioreactors ◽  
High Rate ◽  
Immobilized Cell ◽  
Chemical Cleaning ◽  
Kinetic Evaluation

Abstract High rate membrane bioreactor (MBR) systems operated at extremely low sludge ages (superfast membrane bioreactors (SFMBRs)) are inefficient to achieve nitrogen removal, due to insufficient retention time for nitrifiers. Moreover, frequent chemical cleaning is required due to high biomass flux. This study aims to satisfy the nitrification in SFMBRs by using sponge as carriers, leading to the extension of the residence time of microorganisms. In order to test the limits of nitrification, bioreactor was run under 52, 5 and 2 days of carrier residence time (CRT), with a hydraulic retention time of 6 h. Different degrees of nitrification were obtained for different CRTs. Sponge immobilized SFMBR operation with short CRT resulted in partial nitrification indicating selective dominancy of ammonia oxidizers. At higher CRT, simultaneous nitrification–denitrification was achieved when accompanying with oxygen limitation. Process kinetics was determined through evaluation of the results by a modeling study. Nitrifier partition in the reactor was also identified by model calibration.

scholarly journals Calculation of mean cell residence time for unsteady-state activated sludge systems

1985 ◽  
Vol 27 (9) ◽  
pp. 1393-1393
Author(s):  
David A. Vaccari ◽  
Tom Fagedes ◽  
Jon Longtin
Keyword(s):  
Activated Sludge ◽  
Residence Time ◽  
Unsteady State ◽  
Cell Residence Time ◽  
Activated Sludge Systems

Performance evaluation of an activated sludge system for removing petroleum hydrocarbons from oilfield produced water

2002 ◽  
Vol 6 (4) ◽  
pp. 455-470 ◽  
Author(s):  
Gilbert T Tellez ◽  
N Nirmalakhandan ◽  
Jorge L Gardea-Torresdey
Keyword(s):  
Performance Evaluation ◽  
Activated Sludge ◽  
Petroleum Hydrocarbons ◽  
Produced Water ◽  
Activated Sludge System ◽  
Oilfield Produced Water
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