Process and device for processing and/or dewatering sludge...

C - Chemistry – Metallurgy – 02 – F

Patent

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Details

C02F 9/00 (2006.01) C02F 11/14 (2006.01) C02F 1/32 (2006.01)

Patent

CA 2160007

A device for processing and/or dewatering sludge liquor from small sewerage purification plants is mounted in particular on a vehicle and has dewatering chamber-shaped units which are interconnectable by feed and return pipes, controllable valves and pumps which may be switched on and off. A dewatering container has filtration walls which separate a sludge liquor chamber on the one side from a filtrate chamber on the other side. The dewatering container may be connected by a connecting pipe having at least one feeding pump and a controllable valve to a sludge liquor chamber and filtrate chamber of a second dewatering container. An irradiation chamber is arranged in the filtrate return pipe of a dewatering container and a grit trapping arrangement is arranged in another sludge liquor feed pipe.

Un dispositif de traitement et/ou de déshydratation du liquide surnageant retiré d'installations d'épuration de petites dimensions est notamment monté sur un véhicule et comprend des unités de déshydratation en forme de chambres interconnectables par des conduites d'amenée et de retour, des vannes réglables et des pompes connectables et déconnectables. Un récipient de déshydratation comprend des parois de filtration qui séparent une chambre de liquide surnageant d'un côté d'une chambre de filtrat de l'autre côté. Ces chambres sont connectables chacune par une conduite de liaison, comprenant au moins une pompe de refoulement et une vanne réglable, à une chambre de liquide surnageant et à une chambre de filtrat d'un deuxième récipient de déshydratation. Une chambre d'irradiation est ménagée dans la conduite de retour de filtrat d'un récipient de déshydratation et un agencement dessableur est monté dans une autre conduite de refoulement de liquide surnageant.

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