Abstract: A method for water treatment, wherein the water for treatment is conducted by a conveying device from an inlet to an outlet via multiple treatment stages, wherein at least one of the treatment stages is an oxidation stage in which foreign matter situated in the water is oxidized by an oxidant which is added to the water in or upstream of the oxidation stage, and at least one of the treatment stages to which the water is fed after the processing by the at least one oxidation stage is a separation stage in which foreign matter situated in the water after processing in the at least one oxidation stage is precipitated and separated off by addition of at least one separating agent, in particular of a flocculant and/or of activated carbon.

Abstract: A roll assembly for increasing a surface area of a fluid, in particular for water treatment, including at least one shaft which in each case bears at least one roll, a drive for the at least one shaft, a fluid feed which is arranged above the respective roll and guides the fluid to the respective roll, and a collecting trough for the fluid, the collecting trough being assigned to the respective roll, wherein the roll has two lateral surfaces in the shape of cylinder jackets which are spaced apart in the radial direction, are each in the form of a mesh and project on the bottom side of the roll into the collecting trough.

Abstract: A filter press, including a housing, which receives a liquid to be filtered that contains particles to be separated off, and a pressing device arranged in the housing for pressing the liquid through a filter device, wherein the pressing device, which rotates about a vertical axis, has at least one cross-sectionally round pressing element which rotates about an axis of rotation situated at an angle to the vertical axis and which has an outer casing formed from an elastic material, by which the pressing element rolls on the filter device, wherein the filter device includes a filter and, upstream of the filter, a filter plate which has a plurality of apertures which are open toward the pressing element and each of which has a cross section reducing toward the filter.