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Micro-filtration and ultra-filtration are pressure-dependent processes. They remove dissolved solids and other substances from water to a lesser extent than Reverse Osmosis, yet with a high level of purity.
The membranes used in Micro-filtration have with a pore size of 0.1 – 10 micrometers (µm). The membranes used in Ultra-filtration have smaller pores varying in size from 0.001 – 0.1 (µm). This makes Micro-filtration excellent for the pre-treatment of surface water, sea water, and biologically tested municipal effluent.

Examples include:

  • Cold sterilisation of beverages and pharmaceutical
  • Clearing of fruit juice, wines and beer
  • Separation of bacteria from water (biological waste treatment)
  • Effluent Treatment
  • Separation of oil/water emulsions
  • Pre-treatment of water for nano-filtration or Reverse Osmosis
  • Solid-liquid separation for pharmacies or food industries