A filter installation and method, especially a seawater filter
installation and method, includes at least one fluid line (18,20) for
transporting a biological fluid, a filter device (54) mounted in the
fluid line with at least one filter element (22) in a filter housing
(10), and a device for biological decontamination. The device for
biological decontamination contains active substances that can be
introduced into the filter housing (10), such as inert gases or special
metals, ensuring that toxic impurities cannot enter. The active
substances used are ecofriendly unlike chemically produced fungicides and
herbicides.