Membrane Filter Press vs Chamber Filter Press: Core Differences and Selection Guide

Membrane Filter Press vs Chamber Filter Press:
Core Differences and Selection Guide

In the field of solid-liquid separation, membrane filter press and chamber filter press are the two mainstream equipments, but there are significant differences in the technology path and application scenarios. This article analyzes the comparison from five dimensions to help you choose the right one.

1.Comparison of working principle

Membrane filter press
Second squeeze dehydration: after traditional filtration, inject high-pressure water/gas into the diaphragm plate, and the flexible membrane expands to pressurize the filter cake, further squeezing out the water. Optional: Some models support blow drying to strengthen the dewatering effect.

Chamber Filter Press
One-way filtration and dewatering: only rely on the pressure of feed pump to push out the filtrate, the water content of the cake is high; No squeezing function: relying on natural filter cloth interception, suitable for low viscosity, easy to separate materials.

2.Dewatering efficiency and effect

Membrane filter press
Filter cake dryness: water content can be reduced to 15%-25%, volume compression of more than 30%; Applicable scene: high viscosity, difficult to dewater materials (such as chemical sludge, tailing slurry).

Chamber Filter Press
Filter cake dryness: water content is usually 30%-50%, requiring subsequent drying treatment; Applicable scene: low concentration, easy to separate materials (such as food residue, ordinary sewage).

3.Energy consumption and cost comparison

Membrane filter press
High initial cost: membrane filter plate and hydraulic system are more expensive; Long-term gain: eliminating the drying process, reducing energy consumption by 40%-60%, and lower comprehensive cost.

Chamber filter press
Low initial cost: simple structure, affordable price; Hidden cost: high moisture content filter cake needs additional drying or transportation, and long-term operation and maintenance costs increase.

4.Maintenance and Durability

Membrane filter press
Complicated maintenance: the diaphragm is easy to deteriorate and needs to be replaced regularly (life expectancy of about 3-5 years); High pressure resistance: high-pressure design is suitable for harsh working conditions, and the life of the filter plate is 8-10 years.

Chamber Filter Press
Simple maintenance: no diaphragm structure, only regular replacement of filter cloth is required; Limited pressure resistance: the filter plate is easy to be deformed under high pressure, with a life span of about 5-8 years.

5.Suggestions for selection

Select membrane filter press:
Deep dewatering is required to reduce the subsequent processing cost; High material viscosity and high dehydration difficulty (e.g. mining tailings, chemical hazardous waste); Sufficient budget, the pursuit of long-term cost reduction and environmental compliance.

Choose chamber filter press:
Processing simple, low concentration materials (e.g. food processing, general sewage); Limited budget, low dewatering requirements; Low frequency of equipment use, no need for continuous high-pressure operation.

Membrane filter press solves difficult dewatering requirements with technology upgrading, and chamber filter press meets basic scenarios with economy.

Enterprises need to make comprehensive decisions based on material characteristics, processing goals and budget.

Membrane Filter Press vs Chamber Filter Press: Core Differences and Selection Guide

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