Module array of a plurality of plasma generator modules for generating a physical plasma by dielectric barrier discharge at atmospheric pressure, wherein the plasma generator modules each comprise - two linearly elongated electrodes, - at least one of which is provided with a dielectric barrier and - which extend parallel to one another at a lateral electrode distance; - connection devices for connecting the electrodes to a high voltage source; and - two 2-dimensional gas-guiding elements configured for guiding a working gas between the electrodes; wherein a slit-shaped mouth of a suction channel adjoins at least one of the two electrodes of the respective plasma generator module at its outer side facing away from the other electrode, wherein the suction channel, at an outer side of the gas-guiding element connecting to the at least one of the two electrodes, extends over this gas-guiding element, wherein the plasma generator modules are each delimited by a module housing laterally along the electrodes and transversely to the electrodes, wherein the electrodes are each arranged at a bottom side of the module housing, wherein the module housings of the plurality of plasma modules are provided with fixation devices (5, 6, 33) and fixed to one another or to a common module frame by means of the fixation devices (5, 6, 33), and wherein the plurality of plasma modules are arranged side by side along the electrodes and transversely to the electrodes, and offset in such a way that they partially overlap along the electrodes. wherein the plasma generator modules each comprise - two linearly elongated electrodes, - at least one of which is provided with a dielectric barrier and - which extend parallel to one another at a lateral electrode distance; - connection devices for connecting the electrodes to a high voltage source; and - two 2-dimensional gas-guiding elements configured for guiding a working gas between the electrodes; - two linearly elongated electrodes, - at least one of which is provided with a dielectric barrier and - which extend parallel to one another at a lateral electrode distance; - at least one of which is provided with a dielectric barrier and - which extend parallel to one another at a lateral electrode distance; - connection devices for connecting the electrodes to a high voltage source; and - two 2-dimensional gas-guiding elements configured for guiding a working gas between the electrodes; wherein a slit-shaped mouth of a suction channel adjoins at least one of the two electrodes of the respective plasma generator module at its outer side facing away from the other electrode, wherein the suction channel, at an outer side of the gas-guiding element connecting to the at least one of the two electrodes, extends over this gas-guiding element, wherein the plasma generator modules are each delimited by a module housing laterally along the electrodes and transversely to the electrodes, wherein the electrodes are each arranged at a bottom side of the module housing, wherein the module housings of the plurality of plasma modules are provided with fixation devices (5, 6, 33) and fixed to one another or to a common module frame by means of the fixation devices (5, 6, 33), and wherein the plurality of plasma modules are arranged side by side along the electrodes and transversely to the electrodes, and offset in such a way that they partially overlap along the electrodes.