Liquid purification or separation – Processes – Chemical treatment
Patent
1993-06-25
1995-07-04
McCarthy, Neil
Liquid purification or separation
Processes
Chemical treatment
210764, 210768, 422 33, C02F 150, C02F 1114
Patent
active
054297508
ABSTRACT:
A method to remove pathogens from dewatered sludge and to reduce vector attraction that includes the steps of raising the pH 12 of the sludge above 12, subjecting the sludge to low ambient (near zero) pressure and/or elevating the shear pressure on the sludge after the sludge has been treated with a bulking agent to increase stiffness. Exposure to a vacuum enhances pathogen destruction and helps remove odiferous gases for vector control.
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Hazen & Sawyer P.C.
McCarthy Neil
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