Patent ID: 11883764
Assignee: EVOQUA WATER TECHNOLOGIES LLC
Field: Chemical engineering (Chemistry)
Classification: CPC B  Y | IPC B

Claim 0:
1. An apparatus for wasting flocculant sludge from a clarifier having a center shaft positioned upright in the clarifier, the apparatus comprising:
a wasting pipe having an inlet and an outlet fluidly connectable to a waste conduit;
a manifold having an inlet and an outlet fluidly connected to the wasting pipe inlet;
an upper header extending radially from the center shaft comprising a conduit having a plurality of orifices dimensioned to collect the flocculant sludge and an outlet fluidly connected to the manifold inlet, the upper header being configured to be positioned within a disperse sludge zone of the clarifier, the upper header being constructed and arranged to be positionable at an adjustable height along the center shaft, the upper header being operably connectable to a controller configured to direct the upper header along the center shaft;
a return sludge pipe having an inlet and an outlet fluidly connectable to a return sludge well;
a lower header extending radially from the center shaft comprising a conduit having a plurality of orifices dimensioned to collect settled sludge and an outlet fluidly connected to the return sludge pipe inlet, the lower header being configured to be positioned within a settled sludge zone of the clarifier; and
a drive mechanism configured to rotate the upper header and the lower header about a center axis of the clarifier.