Hollow Fiber Membrane

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EcoLan^TM adopts the industry-leading Improved Thermally Induced Phase Separation (I-TIPS) technology to produce PVDF hollow fiber membranes. It has characteristics of high crystallinity and a uniform interpenetrating grid structure, making them much more substantial than PVDF membranes produced by the standard immersion precipitation method. Ultimately solve the problem of easy breakage and damage of membrane filaments produced by previous technologies. In addition, EcoLan’s hollow fiber membrane has stable water quality, high operating flux, and long service life, which is the ideal core component for the MBR process.

1. No Filament Breakage and No Peeling

EcoLan’s hollow fiber membrane filament adopts PET woven mesh tube as the liner and is firmly compounded with PVDF functional layer. As a result, the tensile strength of a single filament ≥ 100.0MPa and peeling strength ≥ 1.0MPa is 3~8 times the membrane filament produced by the NIPS method and three times the membrane filament produced by the standard TIPS method. EcoLan completely solves the problems of extension deformation, filament breakage, and easy damage and peeling of the functional layer of hollow fiber membrane filament and ensures the long-term stability of production water.

2. High Flux and Long Service Life

The through-hole large porous, permeable water channel and the single-layer membrane structure significantly reduce the interception of pollutants in the membrane filament and improve the ability to resist permanent pollution. As a result, the membrane flux decline is smaller, and the expected service life of membrane products can reach more than five years (5 years membrane flux decline is less than 20%).

3. Anti-oxidation and Acid & Alkali Resistance

The chemical resistance of PVDF membrane filament is related to its membrane manufacturing process. EcoLan‘s membrane filament produced by the I-TIPS method has strong oxidation and acid and alkali resistance due to its crystalline PVDF properties. It supports high-pressure water backwashing, which can further slow down the formation of filter cake, thus obtaining a more thorough chemical cleaning effect and longer life.

4. Dry Transportation and Storage

The permanently hydrophilic modified PVDF material and large porosity (≥60%) membrane structure endow the membrane filaments with strong water permeability and higher operating flux and enable dry transport and storage of the membrane.