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SEDIMENTATIONALLAN B. PENALES
BSCE - V
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SEDIMENTA
the oldest form of water treuses ra!"t# to se$arate $a
water
often follows %oaulat"on a
O'(e%t"!e of Sed"mentat"on
To se$arate sol"ds from l")u"d of ra!"t#. In sed"mentat"on* o
sol"ds +SS, are remo
Sed"mentat"on "s used "n
wastewater treatment
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Particles that will settle within a reasonable pe
time can be removed using a sedimentation tan
called clarifiers).
Sedimentation tanks are either rectangular or
tanks.
Suspended solids (or SS), is the mass of dry
retained by a filter of a given porosity related
volume of the water sample. This includes partic
size not lower than !"m.
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The are four types of sedimentation process
Type 1 Dilutes, free-settling, non-flocculent. (Every partisettles independently)
Type Dilute, flocculent. (!articles can flocculate as the
Type " #oncentrated $uspensions, %one settling ($ludg
Thic&ening)Type ' #oncentrated $uspensions, #ompression ($ludgThic&ening)
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Pr"or to ltrat"on of surfa%e water Pr"or to ltrat"on of %oaulated-&o%%ulated
water After add"n l"me and soda ash In soften"n
of
water In "ron and mananese remo!al $lants aftertreat"n the water
ATE/ T/EATMENT
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Sedimentation in Wastewater Treatme
P/IMA/0 SEDIMENTATION
1 To remo!e settlea'le sol"ds from raw wastewater
SECONDA/0 SEDIMENTATION
1 To remo!e MLSS "n a%t"!ated slude $ro%ess
1 To remo!e '"olo"%al rowth slouh"n o2 tr"%3l"n lters
TE/TIA/0 AND ADVANCED T/EATMENT
1 /emo!e %oaulated-&o%%ulated SS
1 /emo!e %hem"%al $re%"$"tates
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The EndThank you for
listening.