In small companies the starch is separated by sedimentation,
while in larger plants centrifugal screen extractors are more
common. The latter separation process provides wastewater
with a higher fraction of dissolved organic substances and a
lower portion of particulate matter. In this study the pilot
plant was located at a company that applies centrifugation.
In Table 1 the composition of the wastewater investigated
is compared with data published by Mai.