DENUTRITOR is a bio filtrating device which reduces biofouling in water systems by removing compounds that cause the growth of microbial populations. This biofilter has been developed within the AQUAFIT4USE large-scale project. This pan-European initiative, funded under the 7th Framework Programme (FP7), a grant funding programme, aims to make industries more independent of the supply of water for their production processes. New technologies, tools and methods for sustainable water supply, use and discharge in the main water consuming industries, i.e. “water fit-for-(re)use”, have been developed.