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Time series analysis of the secondary clarifier
Author(s) -
Ossenbruggen Paul J.,
Hill Robert D.,
Gaudard Marie
Publication year - 1991
Publication title -
environmetrics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.68
H-Index - 58
eISSN - 1099-095X
pISSN - 1180-4009
DOI - 10.1002/env.3770020107
Subject(s) - clarifier , computer science , feed forward , controller (irrigation) , autoregressive integrated moving average , series (stratigraphy) , control theory (sociology) , identification (biology) , transient (computer programming) , control engineering , time series , control (management) , engineering , machine learning , artificial intelligence , paleontology , agronomy , botany , biology , operating system , waste management
Full scale tests were performed to determine the effects of transient and return flows on the clarification process of activated sludge treatment. An ARIMA‐intervention model and a feedback‐feedforward control scheme for return flow was developed. Computer simulation runs were used to test the effectiveness of the control algorithm. The paper describes and discusses the model identification, the controller development and the controller's potential in application.