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Chemical Solutions

Membrane plates

Membrane filter plate. The plate body is made of polypropylene. Membrane from EPDM

Membrane filter plate. The plate body is made of polypropylene. Membrane from EPDM

Membrane filter plate. The plate body is polypropylene. Membrane - TPE

Membrane filter plate. The plate body is polypropylene. Membrane - TPE

Membrane filter plate. The plate body is polypropylene. Membrane - PP

Membrane filter plate. The plate body is polypropylene. Membrane - PP

Design UM bloc for cases of unstable concentration of solid phase in suspension

Design UM bloc for cases of unstable concentration of solid phase in suspension

Design bloc in case of necessity of the maximum washing and blowing efficiency of the cake

Design bloc in case of necessity of the maximum washing and blowing efficiency of the cake

RUD design. The removable membrane of PP, NBR, EPDM, TPE without sealing the surface

RUD design. The removable membrane of PP, NBR, EPDM, TPE without sealing the surface

Design RUM. Removable membrane from PP or TPE with sealing surface

Design RUM. Removable membrane from PP or TPE with sealing surface

Membrane filter plates Lenser allow execute an additional mechanical pressing of cake. For a short period of time from 2 to 5 minutes under pressure of water or air under the diaphragm (membrane) greater than the 2-4 bar pressure feed pump, sludge pressed sufficiently large amount of filtrate. Thus, it is possible to significantly reduce the moisture content of the filter cake compared to the filtration chamber plates, and to reduce the cycle time. The membrane plates are also used, if necessary, blowing or washing of the cake to make it uniform in all directions resistance.

The movable diaphragm membrane can be welded without the possibility of replacement if damaged, and removable. Membrane filter plates are manufactured with any type of feed suspension and dimensions from 400 to 3000 mm.

Questionnaire
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Advantages:

  1. High separation efficiency of the slurry into liquid and solid phase. Low moisture content of cake.

  2. High quality of the properly selected filter plate material. Manufacturer of granulated polypropylene - Lyondell Basell (Germany)

  3. Geometry – the pattern at drainage surface provide bigger "live" surface area of the filter cloths in comparison with competitors.

  4. The optimal area of the sealing surface guarantees maximum value of the chamber filter square and a full set of plates.

  5. The patented technology of three modifications polypropylene body plate welding, the sealing surface and the membrane itself.

  6. The possibility to produce a membrane filter plates for filter presses of any manufacturer.

  7. Development of individual design solutions under technological conditions of the customer

Scope of application:

  • Non-ferrous metallurgy

  • Coal industry

  • Sugar industry

  • Wastewater from electroplating industry

  • Chemical industry

  • Production of mineral fertilizers

  • Dewatering of industrial and municipal effluents.

  • And others.

Chamber and membrane filter press cycle time comparison


Basic principles of diaphragm plate and diaphragm material design selection

Design bloc – welded membrane

This design of the membrane plate is used when neсessary to maximize the washing and blowing o filtered cake, but with a stable filling of the chamber with sediment by at least 50% of the volume. These operations can guarantee a minimum concentration of soluble substances in the sediment and the minimum sludge moisture content. As the membrane material can be PP (polypropylene) in the temperature range from +10 to +95 °C and TPE (thermoplastic elastomer) in the temperature range from 5 to 100 °C. By the presence of heavy metals ions in suspension, the membrane additionally stabilizes with copper, manganese and cobalt which allow to prevent the destruction of the polypropylene molecular chains.

UM bloc design - welded membrane

This design is used in case of possibility of membrane operation into empty chamber with a low content of solid phase in suspension. As the membrane material can be PP (polypropylene) in the temperature range from +10 to +95 and TPE (thermoplastic elastomer) in the temperature range from 5 to 100 C.

RUD design – removable membrane (diaphragm) without the sealing surface.

RUD design allows to change only the diaphragm without complete plate replacing. This type of membrane plate design used in aggressive conditions in the filtering process: the presence of heavy metal ions, high concentrations of acids and other aggressive towards RR impurities (e.g., free chlorine) high temperature, short filtering cycle.

The selection of the RUD design may be due to safety releasing the membrane with compressed air.

As the membrane material can be PP (polypropylene) in the temperature range from +10 to +95 and TPE (thermoplastic elastomer) in the temperature range from 5 to 100, NBR temperature range from +5 to +85 C and EPDM in the temperature range from +5 to +95 C. the stabilization of material from heavy metal ions is only possible for PP and TPE.

RUM design – removable membrane (diaphragm) with sealing surface.

Design RUM, as well as RUD, allows change only the diaphragm without complete plate replacing. This type of membrane plate design used in filtering suspensions containing highly abrasive solid particles damaging when channeling channels the outlets of the filtrate, and the presence in the stream of solid particles larger than 5-10 mm are capable of in contact with the sealing surface to damage it when closing the package of plates.

As the membrane material can be PP (polypropylene) in the temperature range from +10 to +95 and TPE (thermoplastic elastomer) in the temperature range from 5 to 100 C. In the presence of heavy metal ions in a suspension, the membrane additionally stabilize by copper, manganese and cobalt, to prevent the destruction of the molecular chains of polypropylene.

 

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