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| Filter press KS 94 application Filter press control with 2 working pressures Description Chamber filter presses and membrane filter presses are used to dewatering sludgy effluents, for example from foundries, metalworking plants, and sewage plants. Digesters, for instance, work according to the displacement principle, whereby old sludge is replaced by fresh sludge from the holding tank; the holding tank acts as a sludge buffer. The sludge only contains some 2 to 6 % of solids, which are separated from the liquid phase by adding flocculants. In most production sites, stationary plants are used to treat the waste water and remove as many solids as possible. Mobile installations are also used, mainly in refuse tips and landfills, and operated by commercial service enterprises. Large volumes of waste mean high handling and treatment cost, so that efficient sludge dewatering can lead to considerable savings. In the long term, this can even justify the installation of a stationary plant or paying for the services of a commercial operator. There still are very many mobile installations that are fitted with ancient control equipment and, as a consequence, a high risk of failure, quite apart from low efficiency. |
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