Method and unit for cleaning pieces contaminated with organic matter

摘要

In a method and a unit for cleaning pieces contaminated with organic matter using a cleaning fluid, at least a part of the cleaning fluid circulates in a loop between a unit ( 1 ) for cleaning pieces, in which the cleaning fluid is charged with organic material on contacting the pieces and a processing unit in which living microorganisms biologically decompose the organic matter contained in the fluid leaving the cleaning unit ( 1 ). The method includes an at least partial sterilisation of at least a part of the cleaning fluid circulating in the installation, for limiting or preventing the presence of living microorganisms in the cleaning fluid serving the cleaning unit ( 1 ). The method and apparatus apply to the degreasing of pieces.