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Wastewater Treatment
Technology Tutorial
Removal
of Solids and Grit
In order to remove course solids, numerous types of
detritus tanks, grinders, and cyclonic inertial separation
are utilized, including a comminutor and a grit
chamber. The type of grit removal separation depends
upon the characteristics of the grit itself.
 A
comminutor, also known as the grinding pump, houses
a rotating cutting screen. This cutting screen shreds
any large chunks of organic matter in the wastewater
into smaller pieces. This makes it easier for the the
microorganisms to use the organic matter as food and
prevents the large chunks from harming the internal
workings of the treatment plant.
 A
grit chamber allows pieces of rock, metal, bone,
and even egg shells, which are denser than organic materials,
to settle out of the waste stream. Removal of grit prevents
damage to machinery through abrasion or clogging.
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