ULTRAFILTRATION

Ultrafiltration (UF) is a filtration process similar to Reverse Osmosis, using hydrostatic pressure to force water through a semi-permeable membrane. The pore size of the ultrafiltration membrane is usually 0.02-0.005 micron. Ultrafiltration (UF) is a pressure-driven barrier to suspended solids, bacteria, viruses, endotoxins and other pathogens to produce water with very high purity and low silt density.

How It Works

Ultrafiltration uses hollow fibers of membrane material and the feed water flows either inside the shell, or in the lumen of the fibers. Suspended solids and solutes of high molecular weight are retained, while water and low molecular weight solutes pass through the membrane. Ultrafiltration is not fundamentally different from reverse osmosis, microfiltration or Nano filtration, except in terms of the size of the molecules it retains. When strategically combined with other purification technologies in a complete water system, UF is ideal for the removal of colloids, proteins, bacteria, pyrogens, proteins, and macromolecules larger than the membrane pore size from water.

Benefits

RO units can produce pure water for several uses and purposes:
    * No need for chemicals (coagulants, flocculates, disinfectants, pH adjustment)
    * Size-exclusion filtration as opposed to media depth filtration
    * Good and constant quality of the treated water in terms of particle and microbial removal
    * Process and plant compactness
    * Simple automation
    * Environmentally friendly
    * Small footprint

What does ultrafiltration remove?

    * Endotoxins
    * Plastics
    * Proteins
    * Silica
    * Silt
    * Smog
    * Viruses