Overview of membrane filters
Image
Table:
An overview of the different pressure-driven membrane filtration processes.
Type of media:
Image (344.5 kByte)
Last update:
2018-10-26
License:
This medium is made available under a CC BY-SA 4.0 international license.
What does this mean?
How to reference this medium
This medium is made available under a CC BY-SA 4.0 international license.
What does this mean?
How to reference this medium
Media package:
Description:
Membrane filters consist of a microporous material. During filtration of water suspended particles above a certain size are retained while smaller particles can pass through the membrane unimpeded.
Apart from typical applications of the individual filter types, this tabular overview also lists the main parameters. Plastic is generally used as the filter material, although metal and ceramic membranes are also possible in principle. Depending on the size of the particles to be separated out and the pore size of the membrane the filtration process is referred to as microfiltration, ultrafiltration, nanofiltration or reverse osmosis. The smaller the pores are, the greater the applied pressure difference has to be in order to force the water through the membrane.
Information and ideas:
Information on the individual filtration processes for further study can be found in the “Guideline for water treatment" on the media portal of the Siemens Stiftung.
Apart from typical applications of the individual filter types, this tabular overview also lists the main parameters. Plastic is generally used as the filter material, although metal and ceramic membranes are also possible in principle. Depending on the size of the particles to be separated out and the pore size of the membrane the filtration process is referred to as microfiltration, ultrafiltration, nanofiltration or reverse osmosis. The smaller the pores are, the greater the applied pressure difference has to be in order to force the water through the membrane.
Information and ideas:
Information on the individual filtration processes for further study can be found in the “Guideline for water treatment" on the media portal of the Siemens Stiftung.
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Learning resource type:
Information sheet
Subjects:
Biology; Chemistry; Physics; Technology
Grade levels:
Grade 10 to 13
School types:
Middle/high school
Keywords:
Drinking water; Nanotechnology; Water treatment; Desalination plant; Drinking water treatment; Membrane filter; Microfilter; Nanotechnology; SkyHydrant; Water filter
Bibliography:
Siemens Stiftung Media Portal
Author:
MediaHouse GmbH
Rights holder:
© Siemens Stiftung 2016