The Horizontal Decanters (Rake Thickener) are ideal for the largest water flows. They have a limited height and are provided with an upper sludge thickening system. Horizontal decanters are made of stainless steel in their middle and large versions, while the largest ones are made of concrete.
The decantation principle is more or less the same occurring in vertical decanters. The rake mechanism stirs the sludge through its rotation movement pushing it to the bottom.
The discharging is automatic and adjusted to the rake effort, in order to reach the desired thickness. Sensors will give the opening input to the thickener discharging valve and the sludge will go through, to the Bifang.
WHEN TO USE A HORIZONTAL RAKE THICKENER
Rake Thickeners can exceed 24 metres in diameter and we generally offer this type of clarifiers when, for customer requirements, vertical decanters exceeding 9 metres would be required.