Recommended values

The following values crudely mark the different regimes within the settling process.

Table 5.3             Settling regimes

Sediment stage

Concentration/dry density (kg/m3)

Remarks

Suspension

0-0.01

No flocculation.

Suspension

0.01-10

Flocculation may begin.

Suspension

10-50

Void ratio larger than 6. No effective stresses between grains. Hindered settling begins.