Procedure and installation for conditioning and subsequent dewatering of sludge
AssigneePassavant-Werke AG
InventorStephan Geyer
Life of this patent
Estimating the term…
Abstract
When adding flocculant to a sludge suspension, which will be dewatered, within a pressure pipe between a feed pump and a dewatering equipment, the distance between the dosing point and the inlet of the dewatering equipment will be modified during operation, e.g. by displacing a lance carrying a dosing head within the sludge pipe or by selectively operating a number of dosing points being positioned at different distances to the dewatering equipment. In this way it is possible to adjust most optimally the retention time being available for the formation and consolidation of floc particles with regard to the present operation conditions and the type of added flocculant.
Claims14
An installation for conditioning and dewatering of sludge wherein flocculent may be introduced at one or more positions along a pipe carrying the sludge, said positions being modifiable during dewatering, said installation comprising:
- dewatering equipment;
- a feed pump;
- a sludge pipe connecting a discharge of said feed pump to an inlet of said dewatering equipment;
- and
- means for dosing the sludge with a flocculent in at least two dosing positions along said sludge pipe at different distances from said dewatering equipment, said dosing means operable to add the flocculent to sludge in said sludge pipe at different locations in said sludge pipe, whereby a distance traveled by a mixture of sludge and flocculent in the sludge pipe before reaching the inlet of said dewatering equipment is varied to achieve an optimum retention time necessary for formation and consolidation of sludge floc particles.
An installation for conditioning and dewatering of sludge wherein flocculent may be introduced at one or more positions along a pipe carrying the sludge, said positions being modifiable during dewatering, said installation comprising:
- dewatering equipment;
- a feed pump;
- a sludge pipe connecting a discharge of said feed pump to an inlet of said dewatering equipment;
- and
- a dosing device movable along a longitudinal axis of said sludge pipe to vary the distance between said dosing device and said dewatering equipment for adding flocculent to sludge in said sludge pipe at different locations in said sludge pipe, whereby a distance traveled at a mixture of sludge and flocculent in the sludge pipe before reaching the inlet of said dewatering equipment is varied to achieve an optimum retention time necessary for formation and consolidation of sludge floc particles.
Dependencies are inferred from the claim text.