Apparatus, method and system for treating sewage sludge

C - Chemistry – Metallurgy – 02 – F

Patent

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Details

C02F 11/12 (2006.01) C02F 11/00 (2006.01) C02F 11/18 (2006.01)

Patent

CA 2662144

An apparatus, method and system is provided for treating sewage sludge by heating the same in a container to drive off pathogens and/or pasteurize the sewage sludge while the material is tumbled in the container, and with moisture gases being evaporated therefrom and drawn off from the container. There is provided at least one weight-responsive member on which the container is mounted, and a control is provided connected to the one or more weight-responsive member whereby the solids content of the treated material can be determined by measuring the difference in weight of material in the container, before and after moisture is drawn off from the material and prior to its discharge from the drum. The control is preferably effected by means of a computer.

La présente invention concerne un appareil, un procédé et un système de traitement de boues des eaux d'égout en chauffant ces dernières dans un récipient pour éliminer les pathogènes et/ou pasteuriser les boues des eaux d'égout alors que le matériau est mélangé dans le récipient, les gaz d'humidité étant évaporés et évacués du récipient. Il est prévu au moins un élément, qui répond au poids, sur lequel est monté le récipient, et une commande est prévue qui est connectée au ou aux éléments qui répondent au poids, moyennant quoi la teneur en matières solides du matériau traité peut être déterminée en mesurant la différence de poids du matériau dans le récipient, avant et après l'élimination de l'humidité du matériau et avant son évacuation à partir du tambour. La commande est de préférence effectuée au moyen d'un ordinateur.

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