Diemme is a leading producer of industrial filtration systems, solid liquid separation technologies, membrane filter press and filtration equipment in general. Diemme Filtration: World wide leader in solid-liquid separation technologies for industrial processes Technology in the solid-liquid separation industry has evolved rapidly during the last forty years, and from the beginning DIEMME Filtration has played a very important role in this evolutionary process, by developing innovative solutions which are used for a diverse range of industrial applications. The considerable experience gained in our field, together with the unique knowledge attained through our continuous investment in research and development, has placed us at the forefront of technical solution; displayed by our proud history and reflected in our latest designs. It is this unique combination of heritage and knowledge that DIEMME Filtration puts at disposal of its customers every day. The heart of DIEMME Filtration is represented by the research centre DIEMME Filtration carries out research and testing in their laboratories, specialized to the requirements of the delicate solid-liquid separation process. In this way, our customers benefit from our extensive knowledge and experience which has been growing every day, since 1923. The testing, which is carried out by a team of chemists and engineers alongside the customer's technicians, is designed to determine the filtration parameters of the tested materials, in order to assure the optimization of the customer's production process and the performances of the equipment supplied by DIEMME Filtration. FILTRATION ANALYSIS The DIEMME Filtration laboratory is equipped with the most modern apparatus to determination the parameters that are necessary for plant design. A typical laboratory test includes analysis of: sludge characterization, filtration phase, filtration characterization and characterization cake. When required, it is possible to carry out chemical stability tests on the material which may be in contact with the product to be filtered, in order to assure the suitability of the materials employed for machine manufacture. PILOT PLANTS DIEMME Filtration has different solutions for the execution of filtration tests, both in its laboratories and at the customer's site, with desk unit or the pilot units installed in container. These are equipped with a wide range of accessories to can simulate various industrial process which allow them to gather accurate filtration testing results. The GHT 4x4 is a filter press with high productivity. The filter plates, which are hung from the upper beam, are moved automatically by a rapid shifting device equipped with a carousel system which reduces the filter press opening and closing sequence to the minimum. Four hydraulic cylinders placed on the plate pack corners ensure perfect operation and limited structural stress, even in the most unfavourable working conditions. Effectively guarded moving parts and the use of state-of-the-art electronic interlock systems mean that the GHT 4x4 conforms to the highest operator health and safety regulations. Routine maintenance operations are simple, thanks to easy access to the filter plates, both for inspection and for filter cloth replacement. Fixed header – 4 cylinders: the fixed header is made of a stainless steel “cellular” structure in order to best resist stress and it supports four (4) hydraulic jacks which are responsible for holding the plate pack closed. Automatic cloth washing system: successful cloth cleaning using a robotic device ensures that optimum filtration rates are maintained. Protection of the shifting device: The plate shifting mechanism, located inside the upper beam, is effectively protected from sludge, dust and corrosive chemicals by a continuous belt of rubber-lined cloth. Anti-releasing device: the unique anti-releasing device prevents the simultaneous and premature plate pack release during the filter press opening and it allows a perfect and sequential cake discharge. Carousel type plate shifting: the carousel plate shifting device assures quick and sequential plate movement by means of an automatic transport system controlled by an inverter. Laser: a laser control system ensures correct plate pack alignment and stops the filter press in case of any anomaly so that any damage can be avoided. Mobile hoist: a mobile hoist is provided to reduce downtime in the rare event of plate removal. Optional open-filtrate-discharge plate pack: this is an alternative solution to the standard closed-filtrate-discharge system. It allows the visual monitoring of the filtrate quality through plates with external drainage ports equipped with cocks. The filtrate discharge from each plate is collected in a launder installed at the side of the plate pack running longitudinally. The JETFILTER structure is an overhead beam type and its small size facilitates its installation in small rooms or in existing plants. JETFILTER is a new concept in filter press design that outperforms all conventional filtration systems. The innovative product injection technology, together with the unique, integrated system of cake discharge and cloth washing, allow the JETFILTER to dewater any kind of suspension very quickly. JETFILTER is fully automatic and can work 24 hours a day continuously without the operator’s presence, even when feeding viscous products resulting in very adhesive cakes which are normally difficult to discharge. Compared to the traditional automatic filter presses, the JET FILTER hourly output is about 4 times higher. The technology implemented in this model, as well as reducing the cycle time, also minimizes the use of chemical filtration aids and consequently, cuts plant operating costs considerably “Plate-by-plate” feed A series of injectors puts the product in every single filtration chamber simultaneously. The injection, which is made tangentially, allows fast and homogeneous filling and high filtration speed, even with very abrasive products. Discharging device The discharging device is located on the lower side of each plate and is comprised of a series of washing bars. Thanks to the extremely precise design, the washing bars are able to detach the cake without smearing it on the cloths. In this way, even the most adhesive products can be discharged successfully. Automatic cloth washing The automatic cloth washing system is comprised of a series of nozzles attached to the discharging device and allows the cloths to be washed simultaneously, at the end of every cycle. In this way it is possible to guarantee consistent filtration rates, cycle after cycle.