A Dynamic Mathematical Model of Bacterial Growth - Application to Sequencing Batch Biological Reactors

摘要

The basic premise of the model developed in this dissertation is that when an aerobic, heterotrophic culture of bacteria is mixed with a substrate in the presence of oxygen and nutrients, more bacteria are produced along with carbon dioxide, water, various shunt products, and storage products. The modeling procedure involved proposing a reaction system that described the relations among the physically important model components. The model has been shown to effectively describe delayed growth in batch cultures, the transient responses of chemostats and the transient response of recycle reactors. Laboratory experiments investigating the use of sequencing batch biological reactors as a treatment alternative were conducted. The analysis of such a forced, periodic system is facilitated by the use of a dynamic, mathematical model. The previously developed model was used quite successfully to simulate many of the experimental observations. The model was then used to explain control strategies and to design a system of sequencing batch biological reactors.