NOVELTY - The container system for a fermentable and/or aggressive material, comprises base plates (3) and container side walls that encompass a space and that consist of structurally identical, prefabricated plate segments. The plate segments are made up of same material reinforced mineral castings, which are form- and force fitted to the container. The mineral cast plates (1) are fitted one another to the base plates and that the butt joint of the mineral cast plates of the container side walls are closed on the inner side of the container with an elastic single component-filler.    USE - For container for taking fermentable and/or aggressive material (claimed) for biogas production on the basis of fermentation of organic materials.    ADVANTAGE - The container sidewall has plate segments with mineral castings, which have high frost- and UV resistance, gas- and water impervious characteristics and resistant against chemical and biological effects. The container can be produced more economically and has low operating and/or maintenance cost and high corrosion resistant properties.    DETAILED DESCRIPTION - The container system for fermentable and/or aggressive material, comprises base plates (3) and container side walls that encompass a space and that consist of structurally identical, prefabricated plate segments. The plate segments are made up of same material reinforced mineral castings, which are form- and force fitted to the container. The mineral cast plates (1) are fitted one another to the base plates and that the butt joint of the mineral cast plates of the container side walls are closed on the inner side of the container with an elastic single component-filler and the outer splice areas are stuck together precisely with the mineral filler (4) and that the mineral cast plates comprise a channel system for aqueous or gaseous heat carrier and that the mineral cast plates are enough for the container side walls over the complete building height of the container and that in dependence of the statistical overload of the container side walls, support pillars (7) or longitudinal ribs are provided. The support pillars are tightly force-fitted with the mineral cast plates and the longitudinal ribs are stuck or screwed on or that the mineral casting plates are fitted opposite to each other by spanner nuts and that by cubical or rectangular container the edges between the front side and the container side walls are made stronger by stuck on or screw on angles. The mineral cast plates for the container sidewalls are arranged with a stretched or a curved cross section. The curve radius fits the container radius. The mineral cast plates are built convexly in the container sidewalls. For fastening the support pillars anchors are stuck or screwed on to the mineral cast plates or are fused to the plates during manufacture or for the taking up of the anchor pegs are fused on to the mineral cast plates. Ring chambers are interspersed into each other in the mineral cast plates. The mineral cast plates of the ring chamber are clamped with one another by a tension rod. The counter bearing for the tension anchor (10) of the spanner nut is fitted, screwed on to the outer side of the mineral cast plates or molded directly into the mineral cast plates. The adjustment of the angularity of the counter bearing between the mineral cast plates is made possible by means of a conical washer (11) and tension nut with spherical cap support or in that the angle of the counter bearing of the angle position of the assembled mineral cast plates are adjusted. The longitudinal ribs are either fitted or screwed onto the inside and/or the outside of the container sidewall or on the underside of the base plate. The longitudinal ribs are made of metal castings or metal profiles. Channels (pipelines) with outer connections for passing through a gaseous or an aqueous heat carrier are arranged in the mineral cast plates. The channels of the individual mineral cast plates are parallelly interconnected among one another in a sequence or above the outer pipeline. The heat conducting is limited partially to the part area of the mineral cast plates. For partial delimitation of a heat input between outer connections, outer connections in the shape of a stop cock and discharge nozzles or a analogue combined three way valve are provided. Bendable and corrosion protective aluminum or plastic pipes are provided as channels.    DESCRIPTION OF DRAWING(S) - The figure shows a fermenting container.    Mineral cast plates (1)    Base plates (3)    Mineral filler (4)    Support pillar (7)    Tension anchor (10)    Conical washer. (11)