Post-sedimentation is a crucial step in the waste water treatment process. Even with an optimal biological treatment process, poor sedimentation can totally compromise effluent quality.

Quality of activated sludge is decisive

In many cases, post-sedimentation problems relate to a reduced sedimentation quality of the activated sludge. With thorough microscopic analysis, staining techniques and DNA analyses in our accredited lab, the organisms responsible for the poor sedimentation behaviour can be detected. Targeted measures can then be taken.


The parameters

A classical post-sedimentation tank can be round or rectangular. A lamella separator (or plate separator) can also be used to save space. Details in the design of the post-sedimentation tank, such as the inflow structure, are important for achieving a good result.

These details can be optimized via Computational Fluid Dynamics modelling. Using mathematical models, we gain an insight into the flows inside the tanks, enabling us to optimize certain processes (such as post-sedimentation).

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