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Ultra Filtration Plants:

ultra filtration plants

Ultrafiltration is used for the separation of suspended solids, collides, bacteria and virus. This technique uses membranes with a pore size between 1-100nm.

There are 4 membranes geometries:
  • Spiral wound module:

  • This design tries to maximize surface area in a minimum amount of space. It is the less expensive but more sensitive to pollution due to its manufacturing process. It consists of consecutive layers of large membrane and support material in an envelope type design rolled up around a perforated steel tube.
  • Plate and frame format:

  •  it is normally used for bad quality water. They are set up with a stack of membranes and support plates.
  • Tabular membrane: 

  • Generally used for viscous or bad quality fluids. These modules do not need a preliminary pre-treatment of the water. As the feed solution flows through the membrane core, the permeate passes through the membrane and is collected in the tubular housing.
  • Hollow fiber membrane:

  •  The modules contain several small (0.6 to 2 mm diameter) tubes or fibers. As the feed solution flows through the open cores of the fibers, the permeate is collected in the cartridge area surrounding the fibers. It can carry out the filtration in two ways, either “inside-out” or “outside-in”

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