5.2  Stages in large-scale water treatment

There are often seven steps (Figure 5.2) in large-scale water treatment for urban municipal water supply (Abayneh, 2004). Each of the steps will be described in turn in this section. The water utility (the organisation that runs the treatment plants and water distribution system) will ensure by regular analysis of the water that it adheres to quality standards for safe water. (Water quality standards will be described in Study Session 9.)

Figure 5.2  The seven steps often used in the large-scale treatment of water.

5.1  The need for large-scale water treatment

5.2.1  Screening