In this lecture, prof. Van Dijk explains the principles of sedimentation, a process found in nearly all surface water treatment plants.
The theoretical backgrounds are presented both for discrete settling as well as for flocculent settling. This includes the hydraulic conditions (flow rate, turbulence) and the particle characteristics (diameter, density) influencing the removal efficiency in sedimentation.
Different forms of this process are discussed such as horizontal sedimentation, tilted plate (lamella) sedimentation and upflow (sludge blanket) sedimentation.