Following completion of Chapter 2, students should be able to:

1. Safely operate and maintain a pure oxygen activated sludge plant.
2. Review the plans and specifications for a pure oxygen system.
3. Describe the various methods of determining return sludge and waste sludge rates and select the best method for their plant.
4. Operate an activated sludge process that must treat both municipal and industrial wastes.
5. Operate an activated sludge process that must treat strictly an industrial waste.
6. Operate an activated sludge process to produce a nitrified effluent.

The main purpose of this chapter is to teach operators how to safely start up, operate, shut down, and maintain pure oxygen activated sludge processes. Other purposes include teaching students how to develop operational strategies for the activated sludge process and how to treat industrial wastes using the activated sludge process.

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