Method and apparatus for the solid-liquid-separation of material mixtures and suspensions

A method for a liquid-solid-separation of material mixtures and suspensions comprising:

• feeding the material mixture, a fed volume, under pressure into a closed chamber comprising at least one filter surface;
• and
• creating a hydrostatic pressure within the chamber that leads to a separation of the liquid phase,
• wherein after the separation of the liquid phase has been done:
• opening the chamber;
• removing a filter cake produced;
• and
• moving a filter area out of the chamber with the filter cake, wherein the material mixture firstly is treated with a hydrostatic pressure of about up to 0.2 bar, wherein a portion of the fed volume is removed as filtrate resulting in a concentrated remaining volume, wherein thereafter the concentrated remaining volume is drawn off and is treated with a pressure of up to 5 bar in the closed chamber and, wherein remaining filtrate of the concentrated remaining volume is separated with a pressure of up to 50 bar by reducing the volume of the chamber.