|
Step |
Diagram | Description | ||||||
|
1 |
by the otway system | Water is collected from rivers, dams or underground, and pumped through pipes to where it is needed | ||||||
|
2 |
Storage Basins to Settle Sediment | Raw water from rivers is stored here to allow solid particles to settle to the bottom | ||||||
|
3 |
Dosing – removal of contaminants | Special chemicals (called alum) are added to help impurities sink to the bottom and be removed | ||||||
|
4
|
Option 1 |
Option 2 |
||||||
| Dissolved Air Flotation | Special chemicals are added to float impurities to the surface so they can be removed | Clarifier – settles sludge to the bottom & is removed | This process makes impurities settle to the bottom so that they can be removed | |||||
|
5 |
filters to remove remaining particals | The water is filtered through different filters (eg: sand filter) to clean the water | ||||||
|
6 |
ph adjustment | The pH of the water (how acidic it is) is checked and adjusted to the proper level | ||||||
|
7 |
disinfection | The water is disinfected so that it is safe to drink (using chlorine or other methods) | ||||||
|
8 |
clear water storage | Clean drinking water is stored until it is needed by customers | ||||||
…and then to your house!