System and method for lime stabilization of liquid sludge
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United States of America Patent
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Aug 29, 2017
Grant Date -
Feb 6, 2014
app pub date -
Oct 8, 2013
filing date -
Nov 22, 2011
priority date (Note) -
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Abstract
A lime stabilization system and method is provided in which thickened liquid sludge and lime are separately delivered, under controlled conditions, to a reaction tank and mixed therein to a predetermined pH, controlled via a programmable logic computer. The weight of liquid sludge in the reaction tank is controlled from the computer via load cells that measure the weight of such liquid sludge in the reaction tank. The computer monitors the amount of liquid sludge and lime delivered to the reaction tank, for mixing therein to a desired pH, for a predetermined amount of time, and the resultant mix is discharged from the reaction tank, to a holding tank, for return to the land.
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