Abstract: Process for treating waste water on ships in which the waste water is pretreated by surface filtration, the pretreated waste water being collected in a first tank acting as a mixing tank and optionally enriched with oxygen. The waste water from the first tank is continuously fed to a three stage bioreactor, in which aerobic waste water treatment takes place in a second tank, waste water is fed in batches from a second tank to a third sealed tank, in which denitrification and sedimentation of the solids takes place. Water from the third tank is fed into a fourth tank acting as a settling tank with the largest part of the sludge being recirculated in batches from the third tank into the first tank and, after disinfection, the water from the fourth tank is subjected to fine filtration.

Abstract: Installation for the removal and the deactivation of organisms in the ballast water, with the following characteristic features: a first feed pump for conveying the ballast water, an equipment for gravity precipitation of coarser solids and bigger organisms, connected to the first feed pump, and/or a backwashable filtration equipment, a downstream side connected equipment for the deactivation of micro-germs.

Abstract: Process for treating waste water on ships in which the waste water is pretreated by surface filtration, the pretreated waste water being collected in a first tank acting as a mixing tank and optionally enriched with oxygen. The waste water from the first tank is continuously fed to a three stage bioreactor, in which aerobic waste water treatment takes place in a second tank, waste water is fed in batches from a second tank to a third sealed tank, in which denitrification and sedimentation of the solids takes place. Water from the third tank is fed into a fourth tank acting as a settling tank with the largest part of the sludge being recirculated in batches from the third tank into the first tank and, after disinfection, the water from the fourth tank is subjected to fine filtration.

Abstract: Installation for the removal and the deactivation of organisms in the ballast water, with the following characteristic features:

Abstract: In order to be able to adjust the axial play of a shaft in a shaft holder using a universal buffer component (1) for each unit in a production series, despite a wide tolerance range within the series, a buffer component is mounted so as to be rotatable in the shaft holder (3) at right angles to the axis of the shaft (2). The buffer component (1) is further provided with a circumferential buffer surface which is eccentric with respect to its axis of rotation (4.1). This buffer surface preferably follows an Archimedean spiral and is advantageously made up of individual buffer surfaces (F1-F14). The surfaces (F1-F14) extend tangentially to the Archimedean spiral and each have a buffer region disposed at right angles to the shaft (2). The buffer region is radially set back relative to the trailing edge of the buffer surface in the direction of rotation. The length of this set back corresponds to the desired, nominal axial play ("a") to be set for the shaft (2).