A membrane filter plate is a specialized component of a filter press used in solid-liquid separation processes, similar to a standard chamber filter plate. However, a membrane filter plate has an additional membrane layer integrated into its structure, typically made of elastomeric or thermoplastic materials.

Here are the key features and functions of a membrane filter plate:

Structure: A membrane filter plate is typically constructed with a rigid base plate, similar to a standard chamber filter plate. However, it also includes an elastic or flexible membrane layer attached to the underside of the plate.

Membrane Material: The membrane layer is usually made of materials such as polypropylene, elastomers like EPDM (ethylene propylene diene monomer) or TPE (thermoplastic elastomer), or other specialized materials. These materials provide flexibility and resilience, allowing the membrane to deform under pressure.

Inflation Capability: The membrane layer of a membrane filter plate is designed to be inflatable. When activated, typically by hydraulic pressure, the membrane expands or inflates, exerting additional pressure on the filter cake formed during the filtration process.

Enhanced Dewatering: The inflation of the membrane creates additional pressure on the filter cake, squeezing out more liquid and improving the dewatering efficiency. This results in a drier filter cake with lower moisture content compared to conventional filter plates.

Controlled Filtrate Flow: The design of membrane filter plates includes channels or grooves to direct the filtrate (liquid) flow towards the outlet ports of the filter press. This ensures efficient drainage and collection of the filtrate.

Flexibility and Adaptability: Membrane filter plates are compatible with various types of filter cloths or membranes, including woven fabrics, non-woven materials, and filter membranes with different pore sizes and properties.

Membrane filter plates are commonly used in industries where high-efficiency dewatering is required, such as wastewater treatment plants, mining operations, chemical processing facilities, and pharmaceutical manufacturing. They offer advantages such as improved filtration efficiency, reduced cycle times, and higher cake dryness compared to standard chamber filter plates.