This class will identify and characterize the preliminary treatment processes used in wastewater treatment. These pretreatment processes are all designed to protect the downstream equipment and treatment systems. The processes include screening, grinding, grit removal, flow equalization, odor / corrosion control and flow measurement. The class will review the safety concerns and protective measures related to these processes. Indicators of process efficiencies, math concepts and regulatory issues are also addressed. Participants are encouraged to describe their own experiences in this area, including examples of successful troubleshooting and corrective actions in class discussions.