(57) The invention relates to an apparatus (10) for servicing a drain system (13), which
apparatus includes a first tank (12) for liquid (42) to be fed to the drain system
(13, 30.2) and a second tank (14) for the liquid (41) with a solids content, removed
from the drain system (13, 30.2), means (15, 61) for pressurizing the liquid and feeding
it to the drain system, means (44 - 48) for removing the liquid with a solids content
from the drain system into the second tank, a filtration process (16) arranged to
clean the liquid removed from the drain system to the second tank, in order to recycle
it in the apparatus. The filtration process is based on dynamic filtration (20) and
is fitted between the first and second tanks. In addition, the invention also relates
to a corresponding method.
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