The invention relates to a method and device for removing liquid from a mixture of solids and liquids, whereby the mixture is deposited on the upper part of an endless drivable filter belt and whereby during operation the upper part of the filter belt is led over at least one casing in which a sub-atmospheric pressure is generated. After having passed the casing(s) in which a sub-atmospheric pressure is generated, the mixture is carried through a least one microwave oven by means of the filter belt.