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FAQ
  • Why NF instead of RO?

    NF can achieve real selective filtration（It can effectively remove most contaminants and retains the Ca2+, F- and other essential mineral ions beneficial to human bones and teeth）.  RO is a non-differential filtration (all the beneficial and harmful minerals are removed)

  • What are the advantages of Hollow-Fiber nanofiltration membrane compared with Traditional Spiral-wound Nanofiltration products?

    1.  Exremely Low Pressure –NÜF Hollow-Fiber NF filtration system can be directly used under tap-water outlet pressure without any water pump system.

    2.  Unique Hollow-Fiber Design - NÜF Hollow fiber structure makes flow channel more open and improves fouling resistance, reducing scaling tendency.

    3.  Super High Flow Rate- NÜF hollow fiber membrane’s flux is higher than conventional NF flat sheet ones. so  NÜF modules can be more condense vs. traditional ones.

  • What is Extremely low pressure?
    0.1-0.4MPa(1 to 4 Bar), which is the normal tap water pressure.
  • Why use hollow fiber structure ?

    1.  Ochemate is the first successful company in the world to manufacture and promote hollow fiber nanofiltration membrane in residential application.

    2.  Hollow fiber membrane provides higher filling density compared with flat sheet membrane, so higher flux can be achieved.

    3.  Differentiated hollow fiber membrane & Model structure brings in high efficient water produced with higher water recovery and no /less energy consumed, high fouling resistance.

  • How high is the super flow ?
    For example, based on dimension (L mm x D mm) of typical RO residential membrane, which is our N80-1812-200 model, NÜF TPFP membrane can achieve 200GPD (0.5L/min) under 0.31MPa(3.1Bar) or 500GPD(1.3L/min)under 0.48Mpa(4.8Bar) while conventional RO membrane can only achieve the maximum 100GPD(0.25L/min) under 0.48MPa(4.8Bar) or higher pressure.
  • What is hollow fiber NüF made of?

    1.   NÜF hollow fiber is made from TPFP modified polyamide. There are three-layer structures: base layer, support layer and hydrophilic separative nano-film.

    2.   This innovative membrane material has unique molecular structure design, which offers NÜF material excellent properties - hydrophilicity, Anti- oxidation , high strength, high temperature tolerance compared to standard flat sheet Nano filtration and Reverse Osmosis membrane.