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US 2026/0233134 A1Published application
Apparatus and method for solid-liquid separation
AssigneeBetolar Oyj
InventorAri Laitinen
Life of this patent
Estimating the term…
Abstract
An apparatus and method for solid-liquid separation. Sludge (4) containing solid particles and liquid is fed on a moving belt (2) which is made of liquid permeable filtering material. Acoustic waves (12) are directed to the sludge for intensifying the separation. One or more acoustic wave generators (11) are provided for producing the acoustic waves.
Claims14
An apparatus for solid-liquid separation, wherein the apparatus comprises:
- an endless belt configured to be driven around at least two rotating rolls and wherein the belt is made of liquid permeable filter medium material;
- a receiving section wherein sludge to be filtered is configured to be fed on an upper surface of the belt;
- a discharge section wherein solid material separated from the fed sludge is configured to discharged from the upper surface of the belt;
- at least one tray structure below the belt for receiving liquid passing through the belt;
- and
- at least one acoustic wave generator for producing acoustic waves, located above the belt and arranged to direct the acoustic waves towards the sludge to be filtered;
- wherein the belt is in gaseous atmosphere whereby medium for propagation of the acoustic waves is gas.
4 more elements
A method for solid-liquid separation, the method comprising:
- using a belt filter for separating liquid and solid material from a sludge to be filtered;
- driving an endless belt, which is made of liquid permeable filter medium material, around at least two rotating rolls;
- feeding the sludge on an upper surface of the belt at a receiving section and discharging solid material at a discharge section;
- collecting liquid penetrated through the liquid permeable belt underneath the belt
- executing the solid-liquid separation in gaseous atmosphere;
- and
- intensifying the solid-liquid separation by directing acoustic waves from above the belt towards the sludge which is transported on the belt.
4 more elements
Dependencies are inferred from the claim text.