thickener

Large circular tank in which solids settle slowly and form a slurry which is continuously removed from below while fairly clear water overflows. Also called a clarifier.

[img_assist|nid=12017|title=|desc=|link=none|align=center|width=350|height=189]

[img_assist|nid=15088|title=thickener/clarifier|desc=|link=none|align=center|width=266|height=200]