A new simulator which verifies the operation management of sewage
treatment processes is requested by users to evaluate the performance quantitatively
and rationally. Model parameters which can used throughout the year and an estimating
formula of influent quality have been introduced to the simulator to be easily
adopted at actual sewage treatment plants. Comparison of simulation results and
sample data under normal operation conditions the adaptability and the validity
of the simulator. A new advanced treatment plant has been successfully started
by predicting operation conditions by the simulator. Furthermore, the reduction
of nitrogen concentration and the energy consumption of blowers can be achieved
by optimizing the operating method of reaction tanks.
