Method and device for controlling the integrity of membrane filtration units

摘要

The invention relates to a method of controlling the integrity of hollow fibre filtration units and of detecting leaks through a wholly or partially ruptured fibre. The inventive method is characterised in that it consists in: -emitting a noise or audible signal using an emitter located on one side of the membranes of the filtration units; -detecting the noise or audible signal emerging from a ruptured fibre on the other side of the membranes, regardless of whether or not a fluid is passing through said fibre; -amplifying the signal-noise thus obtained; -and comparing the resulting amplified signal to a threshold noise level in the same frequency range.