Water Treatment:  Water for Plant Systems 2

AOWW2

Overview

This interactive training unit is designed to familiarize trainees with the process of removing dissolved solids and gases from water, and with the safe use of chemicals in water treatment. After completing this unit, trainees should be able to describe ways in which dissolved solids and gases can cause problems in plant equipment. They should also be able to describe how these impurities can be removed by devices such as water softeners, demineralizers, activated carbon filters, aerators, and de-aerators. In addition, trainees should be able to explain how chemicals are used in water treatment and identify safety precautions for the use of chemicals.

Objectives

Dissolved Solids Removal

• Describe ways in which dissolved solids can cause problems in plant equipment.

• Describe the general function and operation of a water softener.

• Describe the general function and operation of a demineralizer.

Dissolved Gas Removal

• Describe ways in which dissolved gases can cause problems in plant equipment.

• Describe how gases such as oxygen, carbon dioxide, and hydrogen sulfide become dissolved in water.

• Describe ways that corrosion can be prevented or controlled.

• Describe the general function and operation of an activated carbon filter.

• Describe the general function and operation of an aerator.

• Describe the general function and operation of a de-aerator.

Chemical Treatment

• Describe how corrosion inhibitors, scale inhibitors, and other chemicals are used in treating water.

• Describe the general operation of a chemical injection pump.

• Describe safety precautions that should be taken when working around chemicals.

Subjects

Dissolved Solids Removal

• Dissolved Solids

• Water Softeners

• Demineralizers

Dissolved Gas Removal

• Dissolved Gases

• Carbon Filters

• Aerators

• De-aerators

Chemical Treatment

• Chemicals in Water Treatment

• Chemical Safety