| 摘要 |
The present invention is directed to a pulsed electric-field system, apparat us and method for the effective disinfecting and dewatering previously-dewatere d, biologically active waste-water sludges (e.g., municipal waste-water sludge) in an efficient manner, so as to dramatically reduce the resulting volume of the inert waste material which has to be disposed of by the municipality. Th e method employed sequentially consists of hydraulically pressurizing (24, 26) the previously dewatered sludge, pre-heating (32) the previously dewatered sludge to a predetermined temperature range, exposing the previously dewater ed sludge to high energy pulsing electrical discharges (42), pressure separatio n (52) of the resulting solids and liquid fraction, and final pressure extrusi on (70) of the separated solids through nozzles.
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