Microfiltration

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Micro-filtration

Microfiltration membranes are for:

  • removal of suspended solids and some microorganisms
  • reduction of turbidity
  • pretreatment for desalination techniques like NF or RO

Fields of application

  • cold sterilisation in beverage and pharmaceutical industry
  • filtration of fruit juices, wines and beers
  • metal recovery in a form of colloids 
  • waste water treatment
  • separation of oil-water emulsions

Operation principle

Microfiltration is a membrane separation process and is a physical separation method. Separation of particles is done according to their size: particles larger than the pores of the membrane are fully removed. Pore size of the microfiltration membranes is in the range of 0.1 – 10 micrometres. Microfiltration is used for the separation of suspended materials, algae, and some microorganisms. Organic and inorganic dissolved substances, as well as viruses are not separated. 

Applied membranes can be flat-sheet, hollow fibre, tubular and spiral wound. The process can be pressurized or vacuum driven (submerged design).