Separation Technology & Materials

Ultrafiltration Membrane Modules

Liquiflux Ultrafiltration Membrane Modules with Membrana Ultra PES Membrane - designed to be efficient, economical and easy to use.

Applications:

  • Drinking water treatment
  • Pre- treatment to RO
  • Process water filtration
  • Waste water polishing/ reuse

Modules:

  • W10 75M2 pvc housing (drinking water/ Industrial)
  • W01/W02 61m2 pvc housing (drinking water/ industrial testing)
  • W05 8.7m2 pvc housing (small applications and pilot testing)

The heart of the modules is the membrane

Membrana Ultra PES Membrane

The Ultra PES ™ membrane made from polyethersulfone blended with a co-polymer, has a highly asymmetric structure with three distinct regions; a separation layer to the inside of the membrane, a supporting layer that provides good mechanical strength to the membrane and an outer layer of smaller pores that cushion and protects the membrane. The membrane is highly hydrophilic which reduces fouling and is stable over a wide pH range (1-13). Membrana’s PES membranes are known for their well-controlled pore formation process. As a consequence the Ultra-PES™membrane exhibits a narrow pore-size distribution. The combination of such narrow pore-size distribution and asymmetric membrane structure creates an optimized relationship between permeability and retention rate, leading to a low pressure drop and reduced energy consumption.

The hollow fibres are entangled with a PET yarn, which is potted along with the hollow fibre membranes. This technology provides mechanical support for the hollow fibre, in fibre direction as well as during bending, and it improves hydrodynamics during backwash as the yarns act as spacers between discrete bundles of hollow fibre membranes.

The arrangement of the membrane bundles in the module potting has several advantages. An optimized membrane length of 1.25 m provides short flushing channels for Back-wash (BW). The membranes are potted in nine segments with a small diameter providing a short distance (<50 mm) of back-wash (BW) flushing channel to the inside of the segment. The segments are positioned asymmetrically within the potting creating a narrow outer channel resulting in an even flow velocity. Feed and filtrate are completely separated by potting without use of o-ring seals leaving no risk for cross contamination as exists with a centre tube design.

Module design has been cleverly crafted. Flexibility is the key here with module designed to be adjustable, so that they can be assembled in either axial or radial configuration or a combination of both. Dead end, crossflow and semi dead end operating modes are supported along with back flush, forward flush, CEB, CIP cleaning options and An extra filtrate port is optional

Complete drawings for standard module skids are available allowing customers to source locally standard and or heavy parts with any specialised components required able to be supplied with the modules

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