Patent ID: 8361313

Claim:
A plant for treating leftover liquids of mechanical processing, comprising: at least one chamber ( 6 ) that is divided into two parts (a) and (b) by a filtering partition ( 9 ); wherein: part (a) includes an inlet for entry of a liquid to be filtered; part (b) includes an outlet for exit of a filtered liquid; vibratory means for causing a vibratory state in at least part (b) of the chamber for the exit of the filtered liquid; wherein said vibratory means comprises a pressurized pneumatic system pneumatically connected to part (b) of the chamber to create intermittent pneumatic pressure impulses in at least part (b) of the chamber; said pressurized pneumatic system comprising a compressed air source, a compressed air delivery duct, and a piloted open-close valve in the delivery duct; an alternative part of said chamber intended for the alternative entry of the liquid to be filtered and of the washing liquid of the partition; wherein said alternative part comprises a decanting tank ( 1012 ) having a substantially arc of circumference shaped section supplied by at least one entry mouth ( 1013 ) for muds, and equipped with at least one outlet mouth ( 1014 ) arranged above said entry mouth for the liquid ( 1050 ) at least partially separated from the mainly solid residue ( 1051 ), there being, inside said decanting tank ( 1012 ), means ( 1016 ) for picking up the mainly solid residue ( 1051 ) decanted from the bottom ( 1015 ) of the tank ( 1012 ) up to discharge means ( 1017 ) for said mainly solid residue ( 1051 ).