Liquid purification or separation – With means to add treating material – Directly applied to separator
Reexamination Certificate
2002-10-18
2008-10-21
Lithgow, Thomas M (Department: 1797)
Liquid purification or separation
With means to add treating material
Directly applied to separator
C210S221200, C210S523000, C210S532100, C210S534000
Reexamination Certificate
active
07438808
ABSTRACT:
The invention relates to a sand catcher comprising a deposition chamber (1) that is configured as a steel container with a cylindrical cross-section, traversed in a longitudinal direction. Said deposition chamber comprises air-supply nozzles (4) on one longitudinal side for generating a circulatory motion or the water transversally to the longitudinal direction of the deposition chamber (1) and a sand collection channel (3), located in the lower section, that runs in a longitudinal direction. A waste water inlet (6) for generating the circulatory motion of the water leads into the upper section of the deposition chamber (1), running transversally to said chamber. The air-supply nozzles (4) are provided on the side of the waste water inlet (6) below the latter (6).
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Von Franz Pöpel et al., “Der neue belüftete Sandfang auf der biologischen Reinigungsanlage der Stadt Heilbronn” (English translation: “The New Ventilated Detritus Chamber On The Biological Cleaning Equipment Of The City Heilbronn”), GWF, May 30, 1958, pp. 535-539, vol. 99, Issue 22.
Crowell & Moring LLP
Lithgow Thomas M
Werkstoff & Funktion Grimmel Wassertechnik GmbH
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