Liquid purification or separation – Processes – Making an insoluble substance or accreting suspended...
Reexamination Certificate
2008-09-22
2011-12-06
Popovics, Robert James (Department: 1778)
Liquid purification or separation
Processes
Making an insoluble substance or accreting suspended...
C210S767000, C210S770000, C210S250000, C210S416100, C210S484000, C210S485000
Reexamination Certificate
active
08070960
ABSTRACT:
A method of dewatering a solids laden waste stream, whereby the slurry is pumped into a vertical filter retaining structure and the liquid is allowed to flow out through the pores of the filtration element while retaining the solids within the structure. After the solids have dewatered, doors or gates located at the bottom of the structure are opened and the solids drop out the bottom by gravity. The structure is elevated to allow a transport vehicle to be placed under the doors prior to dropping out the solids. One embodiment utilizes an open bottom, closed top filter bag that is closed off by the doors or sliding gates located at the bottom of the structure. Another embodiment disclosed would use rigid filter plates to retain the solids and drop out the accumulated solids by opening sliding gates at the bottom of the structure. The filter bag or plates is accessible from the side to allow either manual or automatic pressure washing of the filtration elements or filter bag after each dewatering cycle.
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Popovics Robert James
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