Installation for the preparation of an aqueous solution comprising at least one earth alkali hydrogen carbonate, the installation comprising a) a process flow line providing water, b) at least one dosing unit being suitable for dosing at least one earth alkali carbonate-comprising material into at least a part of the water provided in the process flow line for obtaining an aqueous suspension comprising at least one earth alkali carbonate-comprising material, c) at least one means being suitable for dosing CO 2 or an acid having a pK a -value < 5 into at least a part of the water provided in the process flow line or the aqueous suspension comprising at least one earth alkali carbonate-comprising material for obtaining an aqueous suspension S1 comprising at least one earth alkali hydrogen carbonate, and d) a container being connected to the at least one process flow line by an inlet, wherein the container i) is configured such that at least one submerged membrane module is located in the container for filtering at least a part of the aqueous suspension S1 by passing the aqueous suspension S1 through the least one submerged membrane module in order to obtain an aqueous solution S2 comprising at least one earth alkali hydrogen carbonate, and ii) comprises at least one outlet for releasing the aqueous solution S2 comprising at least one earth alkali hydrogen carbonate from the container, wherein the container comprises recirculating means comprising a recirculating air stream which are configured such that air is recirculated across at least a part of the surface of the at least one submerged membrane module from the bottom to top direction of the at least one submerged membrane module and/or the container or the container comprises recirculating means which are configured such that process fluid is recirculated across at least a part of the surface of the at least one submerged membrane module from the bottom to top direction of the at least one submerged membrane module and/or the container. a) a process flow line providing water, b) at least one dosing unit being suitable for dosing at least one earth alkali carbonate-comprising material into at least a part of the water provided in the process flow line for obtaining an aqueous suspension comprising at least one earth alkali carbonate-comprising material, c) at least one means being suitable for dosing CO 2 or an acid having a pK a -value < 5 into at least a part of the water provided in the process flow line or the aqueous suspension comprising at least one earth alkali carbonate-comprising material for obtaining an aqueous suspension S1 comprising at least one earth alkali hydrogen carbonate, and d) a container being connected to the at least one process flow line by an inlet, wherein the container i) is configured such that at least one submerged membrane module is located in the container for filtering at least a part of the aqueous suspension S1 by passing the aqueous suspension S1 through the least one submerged membrane module in order to obtain an aqueous solution S2 comprising at least one earth alkali hydrogen carbonate, and ii) comprises at least one outlet for releasing the aqueous solution S2 comprising at least one earth alkali hydrogen carbonate from the container, wherein the container comprises recirculating means comprising a recirculating air stream which are configured such that air is recirculated across at least a part of the surface of the at least one submerged membrane module from the bottom to top direction of the at least one submerged membrane module and/or the container or the container comprises recirculating means which are configured such that process fluid is recirculated across at least a part of the surface of the at least one submerged membrane module from the bottom to top direction of the at least one submerged membrane module and/or the container. i) is configured such that at least one submerged membrane module is located in the container for filtering at least a part of the aqueous suspension S1 by passing the aqueous suspension S1 through the least one submerged membrane module in order to obtain an aqueous solution S2 comprising at least one earth alkali hydrogen carbonate, and ii) comprises at least one outlet for releasing the aqueous solution S2 comprising at least one earth alkali hydrogen carbonate from the container,