Patent · US Expired

Apparatus for removing sewage sludge from the bottom or the surface in a settling basin

US4994187A · kind A · utility

1Cited by

15References

13Claims

0Family size

Assignee

Richard Totzke Mashinen- und Apparatebaue GmbH · DE

Inventors

Bernd Glaser · Marktoberdorf, DE
Uwe Kloth · Stockelsdorf, DE

Key dates

Filing date	Aug 16, 1989
Grant date	Feb 19, 1991
Priority date	—
Expiry date	Aug 16, 2009

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB01D21/2466
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

Sweeper means for circular settling basins wherein at least a pipe is supported by a radially extending support structure adapted to be rotated about a central vertical axis by driving means, wherein further the discharge end of the pipe being connected to a sewage sludge return line which is extended below the settling basin and extended into the basin in the central area thereof and which is adapted to deliver the sewage sludge outwards of the settling basin, the support structure being suspended on a vertical rotary shaft coupled to the driving means, the other end of the pipe moving in conjunction with the support structure being connected to a rotary connection below the level in said settling basin to which also the sludge return line is connected.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.