About Porocep Membrane
Manufactured and assembled in Singapore, PoroCep® membranes are made from high-density polyethylene (HDPE), a non-toxic, non-leaching material with excellent tensile strength as well as strong pH and oxidation resistance.
Each hollow fibre membrane is produced through environmentally friendly processes such as melt-spinning and stretching which do not use harmful chemicals. The membranes are housed in unit boxes that are in turn mounted on a skid that comes with its own air diffusing module.
Unlike conventional wastewater treatment systems, MBR systems require less footprint, produce less sludge and allow for higher mixed liquor suspended solids (MLSS) content with less hydraulic retention time. The compact design of the PoroCep® skid allows a higher packing density to be achieved within an MBR. With its high filtration capacity and superior performance efficiency, PoroCep® can help industries and municipalities save energy and reduce costs throughout a wastewater plant’s lifecycle.
ASYMMETRIC, SLIT PORE STRUCTURE
Improved contaminant rejection and membrane permeability
The slit pores of the PoroCep® membrane reject contaminants such as suspended solids and microorganisms more efficiently and are not clogged as easily as the regular circular pores. This slit pore structure is created by an exact stretching method which ensures a narrow pore size distribution. In addition, the asymmetry of the membrane gives it good permeability for high flux rates, and at the same time, high rejection efficiency.
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Front cross-section structure
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Outer surface morphology
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Section along membrane’s
slit pore structure -
Inner surface morphology
Rejection provided by slit pores compared to normal pores
Consistent, high quality permeate
PoroCep® delivers consistent, high quality permeate regardless of the fluctuations in feed water quality.
This is illustrated in the graph below.
PoroCep® is designed to minimise fouling and maximise
membrane packing density through a unique free-floating
fibre design.
Improved contaminant rejection and membrane permeability
One of the key concerns with membrane filtration is fouling and the buildup of a cake layer on the surface of the membranes. Fouling causes membrane permeability to decrease. While a higher cleaning frequency can restore membrane performance, it gradually reduces the lifespan of the membranes. PoroCep® is designed to minimise fouling and maximise membrane packing density through a unique free-floating fibre design.
Hollow fibres made of HDPE material are looped over a supporting rod and potted at the ends. They float freely when submerged in water, preventing contaminants and fibrous material from being trapped within the fibres. At the same time, a steady stream of air bubbles scour the membrane surface to keep it free from solids buildup. As a result, PoroCep® can function for extended periods of time without the need for chemical cleaning. This translates to cost savings and minimal system downtime.
