Filter press AUTOMAT

Thanks to its dewatering power and flexible operation, the DIEMME AUTOMAT filter press achieves the best filtration results in all applications and industries. Plate pack closing device - Highly-reliable plate pack opening and closing operations - Use of standard components - Simple maintenance procedures High pressure cloth washing (DIEMME patent) - Specially-designed device to perform the most efficent and effective cloth washing at the highest level of automation Plate shifting - As fast as four seconds for each plate shifting, executed by means of an inverter with speed adjusted by the operator - Fully-automatic functioning. - Highly- reliable handing of each plate Plates lifting hoist - Simple maintenance procedures Photocell safety curtain - Use of the most modern and advanced systems for operator protection and safety

Filter press GHS

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.

Filter press JETFILTER

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. Distribution system The distribution system controls the flow of wash water to the cloth washing system by means of automatic valves located adjacent to each plate. In this way it is possible to optimize wash water consumption. Simultaneous plate shifting The simultaneous plate shifting system guarantees immediate and simultaneous plate pack opening and minimum idle time during the filtration cycle. Spare cloths A complete set of spare cloths is pre-installed on the machine

Filter press KE

ME is a lateral beam filter press, extremely versatile, which can be customized in function of the applicative process and clients' needs. The filter press ME is full automatic, with short cycles and minimum idle times. Thanks to the simultaneous opening system of the plates pack the cake's release is the extremely quick. ME series offers both big and small models. The latter ones are the smallest filters in the world equipped with an integral automation. Instantaneous release device: it manages the discharge operation of the cake, considerably reducing the work times through a rapid opening of the plates pack. Automatic low pressure cloths washing: a close net of nozzles placed on the plates pack sprinkles the cloths with water, eliminating dust and cake's superficial residues. Automatic high pressure cloths washing: a mechanic robotised arm equipped with nozzles cleans the cloths through high pressure water jets perpendicularly directed on the cloth surface.This action guarantees a profound and effective cleaning of the cloths, and consequently constant filtration output in the time. Protection bellows of hydraulic jack: The piston of the hydraulic jack is protected against dust and liquids by a clothy-rubber bellows which ensures a total protection against corrosive processes. Shaking plate device: an eccentric mechanism shakes the plates eliminating possible residues of cake away from them and so obtaining an effective solid release phase. Aspiration hood: it conveys the vapours generated by the filtration of noxious products far from the operator's field of action, completely isolating the filter from the surrounding environment

GHS filter press

The new GHS filter press has a strong and elegant design. Its refined push to close type upper beam structure ensures a better functional reliability in all working conditions making the access to the filter plates much easier. GHS is an automatic filter press where the 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. 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

Sludge & Slurry dewatering plants

Installations for sludge dewatering The dewatering phases in municipal processes are basically of biological sludge originated from purification processes. DIEMME Filtration has realized many complete installations of sludge purification regarding the processes of water purification, purification of waste waters and SUW (solid urban waste) treatment. Water purification: production of potable water – sludge dewatering In most cases, water provided to end users, given their high demand, comes from lakes (both natural and artificial), rivers and underground aquifers. In order for it to become drinkable (potable), water is subject to a variety of processes commonly including chemical-physical treatment. Chemical-physical treatment produces sludge as a by-product, which is dewatered using filter presses, to reduce the volume for disposal and recover additional water. Purification of waste waters – sludge dewatering Water used in human activities (domestic and municipal waste water) is collected by underground drainage systems (sewers) and directed to centralised plants for treatment in order to allow it to be safely discharged to the environment (or recycled). In these centralised plants, biological processes are harnessed to treat the waste water. A by-product of these processes is sludge with varying qualities, depending on the particular process. Filter presses are commonly used to dewater the sludge, thus reducing the volume and minimising the cost of disposal (or increasing the options for recycling). Industrial waste water treatment also produces sludge as a by-product of the purification process. This sludge needs to be dewatered in order to make disposal both safe and economic. In this dewatering phase, filter presses are used extensively. SUW (solid urban wastes) treatment – sludge dewatering Solid wastes (domestic and industrial) are collected and brought to special sites where they are either buried in landfills or incinerated. In the first case, filter presses are used for dewatering sludge produced from the treatment of contaminated drainage water emanating from the landfill. In the second case, filter presses are used to dewater the slurry produced by “scrubbing” the flue gas from incinerators to minimise air pollution.