Apparatus for the treatment of liquids

An apparatus for the treatment of liquids, comprising:

• a filter module with a filter, an inlet for liquid, a first outlet for liquid and a second outlet for filtered liquid, wherein the inlet and the first outlet are positioned on a first side of the filter and the second outlet is positioned on a second side of the filter;
• a first UV-treatment module with a first UV-light source, wherein the first UV-treatment module is connected with the first outlet of the filter module and is adapted to receive liquid from the filter module, and to expose said liquid to UV-light from the first UV-light source;
• a second UV-treatment module with a second UV-light source, wherein the second UV-treatment module is connected with the second outlet of the filter module and is adapted to receive filtered liquid from the filter module and to expose said liquid to UV-light from the second UV-light source;
• and
• a first vent between the first outlet of the filter module and the first UV-treatment module and a second vent between the second outlet of the filter module and the second UV-treatment module, so that upon an open first vent and a closed second vent liquid from the filter module only reaches the first UV-treatment module, and upon an open second vent and closed first vent liquid from the filter module only reaches the second UV-treatment module,
• wherein the second UV-treatment module is connected with the first UV-treatment module and adapted to receive liquid from the first UV-treatment module and to expose said liquid to UV-light from the second UV-light source.