Sedimentation

The sedimentation process is often used for removing insoluble particles in contaminated water or waste water.

They will remain and separated by gravity. Particle with higher density sediment at the bottom and lower density particle rise to the top. A fraction is separated and the solution is fed to the next process step. In regard to the settling velocity the remaining time of the solution in the sedimentor is adjusted. The process can be increased by chemicals to reduce the residence time.