Particle sizes

There are many techniques developed to seperate substances based on the sizes of the particles. Some of these techniques are widely applicable. Some of them are only applicable for a particular size. An uncomplete list is shown below for different particle sizes with their applicatable technique.

• Diameter between 1 µm and 1 mm
  ~ Drum filter
  ~ Sand filter
  ~ cartridge filter
  ~ Bag filter

• Diameter between 100 nm - 1000 nm (0,1 µm - 1,0 µm)
  ~ Microfiltration
  ~ Ultrafiltration

• Diameter between 1 nm - 100 nm
  ~ Ultrafiltration

• Diameter smaller than 1 nm ( 0,001 µm)
  ~ Reverse Osmosis
  ~ Ion exchange

The choice between different techniques depends on several factors like;
~ The amount of pollution
~ The amount of fluid to be treated
~ The properties of the substance which is to be removed this in order of the damage and the choking of the filter
~ Quality of the filtration
~ Investement

Some of the techniques are only suitable for one time. Other techniques the filter will be cleaned and used again, after a while (this can be several years) the filter eventually should be replaced.

If there are any more questions please contact us.