Abstract
The research for microbial reaction rate is inevitable to develop the design and management technique of wastewater treatment facility in rural settlement.
In this paper, the modeling concept of microbial reaction, the removal principle of organic matter and nitrogen, characteristics of influent wastewater and activated sludge, are arranged at the beginning.
Then the following kinetics are lead and relations among them are arranged systematically, with an eye on analysis of wastewater treatment by Batch-Activated Sludge Process.
1) growth of activated sludge
2) removal of organic matter and nitrogen
3) balance of oxygen
As an example, kinetic model equations which represent changes of water quality in a batch cycle are applied and the concept of procedure to require parameters are shown.