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Estimation of Biological Kinetic Parameters from a Continuous Integrated Ozonation‐Activated Sludge System Treating Domestic Wastewater
Author(s) -
Beltrán Fernando J.,
GarcíaAraya Juan F.,
Álvarez Pedro M.
Publication year - 2000
Publication title -
biotechnology progress
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.572
H-Index - 129
eISSN - 1520-6033
pISSN - 8756-7938
DOI - 10.1021/bp000068i
Subject(s) - activated sludge , wastewater , ozone , nitrification , activated sludge model , sewage treatment , environmental science , chemistry , bioreactor , pulp and paper industry , waste management , environmental engineering , nitrogen , organic chemistry , engineering
The feasibility of treating municipal wastewater by a combined ozone‐activated sludge continuous flow system was studied. Lab‐scale experiments of both single activated sludge and combined ozone‐activated sludge processes were carried out to determine the kinetic coefficients of the biological stage. The results obtained indicated a clear improvement in the kinetic parameters of the aerobic oxidation when a pre‐ozonation stage was applied. Particularly, COD removal and nitrification rates were highly increased. The biokinetic parameters were also used to simulate and optimize the continuous reaction system. From the model prediction it was concluded that the integrated process (i.e., ozone‐ASP) may significantly increase the waste reduction capacity. The results presented here provide a useful basis for further scaling up and efficient operation of ozone‐ASP units in wastewater treatment processes.