In a surface water treatment train, settling largely determines the quality of the filtered water. A conventional horizontal tank needs a very large footprint to reach a workable surface loading.
How it works
Inclined plates are stacked in parallel inside the tank. Floc settles onto a plate surface after a very short travel, slides down to the bottom, and clarified water rises to the collection troughs.
Key advantages
- Effective settling area multiplied on the same footprint
- Shorter water retention time
- Lower civil construction cost
- Stable operation under varying flow
Design notes
Plate angle, spacing and the sludge collection system must be sized against the raw water characteristics. The wrong figures lead to clogged plate channels when turbidity is high.
Where raw water turbidity swings with the season, size for the flood-season value rather than the annual average.
