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Autothermal Thermophilic Aerobic Digestion
Journal of the Environmental Engineering Division, 1978Aerobic digestion at thermophilic temperatures has been examined comparing air and oxygen as aeration gases. Theoretical considerations indicated that autothermal operation can only be economically achieved when high purity oxygen is used. Heat balances using oxygen and air demonstrate that when air is used, evaporative and gas sensible heat losses ...
Michael S. Gould, Raymond F. Drnevich
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Mathematical modelling of autothermal thermophilic aerobic digesters
Water Research, 2007This paper presents a new mathematical model for Autothermal Thermophilic Aerobic Digesters. The reactor has been modelled as two completely mixed volumes to separately predict the behaviour of the liquid and gaseous phases as well as the interrelation between them.
J, Gomez +3 more
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Design Considerations for Autothermal Thermophilic Aerobic Digestion
Impacts of Global Climate Change, 2005ATAD design recommendations are developed from University research, demonstration pilot studies, and several years of plant operation and assessment. These investigations have provided a design approach for those who may be considering the ATAD process for biosolids treatment.
Harlan G. Kelly +2 more
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Water Environment Research, 2006
Autothermal thermophilic aerobic digestion of sludge is known to produce poorly dewatering sludges. Laboratory studies were conducted to investigate the reasons for the poor dewatering. It was found that, during digestion, proteins and polysaccharides were released into solution, and that these could be linked to the deterioration in dewatering.
S, Agarwal, M M, Abu-Orf, J T, Novak
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Autothermal thermophilic aerobic digestion of sludge is known to produce poorly dewatering sludges. Laboratory studies were conducted to investigate the reasons for the poor dewatering. It was found that, during digestion, proteins and polysaccharides were released into solution, and that these could be linked to the deterioration in dewatering.
S, Agarwal, M M, Abu-Orf, J T, Novak
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Microbial ecology of Autothermal Thermophilic Aerobic Digesters (ATAD)
2023Submission note: A thesis submitted in total fulfilment of the requirements for the degree of Doctor of Philosophy to the School of Pharmacy, Faculty of Science, Technology, and Engineering, La Trobe University, Bundoora.
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Operation scheduling of batch autothermal thermophilic aerobic digestion processes
2010Abstract The autothermal thermophilic aerobic digestion (ATAD) is an exothermic batchwise operated sludge treatment process, in which sludge undergoes heating and pasteurization as temperature attains values about 50–60 °C. Based on detailed process models, different approaches have been suggested (Rojas and Zhelev, 2009) to minimize the specific ...
Capón García, Elisabet +3 more
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Effect of Microaerophilic Conditions on Autothermal Thermophilic Aerobic Digestion Process
Journal of Environmental Engineering, 2001A pilot-scale, first-stage, autothermal thermophilic aerobic digestion reactor was used to study the effect of microaerophilic conditions on sludge solids destruction, volatile fatty acids (VFA) production, and phosphorus release. For the aeration rates of 0–100 mL/min and the reactor sludge volume of 72 L, with a primary to secondary sludge ratio of ...
Donald S. Mavinic +3 more
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World Journal of Microbiology and Biotechnology, 2013
One-stage auto thermophilic aerobic digestion (ATAD) could achieve the same sludge stabilization efficiency as two- or multi-stage ATAD process does. However, the dewaterability of sludge might be affected through thermophilic digestion because of the release of intracellular substances under the thermophilic temperatures. This paper investigated which
Jiehong, Cheng +4 more
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One-stage auto thermophilic aerobic digestion (ATAD) could achieve the same sludge stabilization efficiency as two- or multi-stage ATAD process does. However, the dewaterability of sludge might be affected through thermophilic digestion because of the release of intracellular substances under the thermophilic temperatures. This paper investigated which
Jiehong, Cheng +4 more
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Bioresource Technology
Thermal hydrolysis pretreatment (THP) combined with autothermal thermophilic aerobic digestion (ATAD) process is a novel technology to achieve rapid stabilization of high solid sludge.
Ruming Wang +5 more
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Thermal hydrolysis pretreatment (THP) combined with autothermal thermophilic aerobic digestion (ATAD) process is a novel technology to achieve rapid stabilization of high solid sludge.
Ruming Wang +5 more
semanticscholar +1 more source