The dense slurry is deposited generally onto a plain ash field area. The ash field is divided into smaller size slurry impoundment sections – one for operation and the other(s) for standby.
The impoundments are surrounded by dykes.
The developed, settled and aged ash layers are mechanically stable.
No sprinklers required. There is no fugitive dusting.
The quality of leachates is acceptable.
The ash field height can be increased layer by layer (ca. 3 m [9.8 ft.] each) on the top of each other, forming a “pyramid”. The compressive strength of the deposited ash allows the construction of high ash storage fields.
30-60 m (98-196 ft.) height ash hills can be built above ground level. The dense slurry distribution pipes are laid along the top of the dykes, thus they surround the impoundment. There are T-pieces at about 70 m (230 ft.) intervals to allow switching between the discharge points as necessary.
Only one discharge point per discharge pipeline operates at a time.
Switching the discharge points depends on the slurry flow and ash field geometry, weekly intervals are usual.
The slurry starts to solidify after coming to stand still.
At least 70% of material of the additional dykes can be the settled CCR deposit itself.
The closed down and rehabilitated ash field can nicely fit in the environment, can be utilised as park, or recreation area.