Selective variety. Different applications.
Quality range of proprietary UF membrane for different treatment needs.
We select it for your application.
Pre-selected and validated for standard applications.
Evaluate and recommend for specific project requirements.
Pre-designed-and-engineered standard and modular UF systems with varying treatment capacities for common applications. The choice of a particular UF membrane is pre-determined and the systems are optimised in performance through vigorous testing and validation processes before commercial launch.
Specific project’s needs.
We evaluate and analyse your feed water’s parameters vis-a-vis your application qualities required. Our established expertise and experiences enable us to determine the right choice of membrane within our available range to apply, and to optimise its performance into the eventual high-performing UF systems. For unprecedented treatment cases, we may recommend to conduct pilot tests prior to project implementation.
modified PES, PVC
and PVDF membranes.
For a wide spectrum of applications.
One type doesn’t treat all.
Three selective materials used in our UF membrane series are modified Polyethersulfone (PES), modified Polyvinylchloride (PVC) and modified Polyvinylidene (PVDF). These membrane materials offer multiple advantageous features and benefits. Optimised with our innovative UF modules and systems, they are applied selectively for purposes ranging from purifying surface/natural water to potable standards, from reclaiming contaminated wastewater to process water, and more. Learn more about our UF membranes →
Membrane strand’s ID and OD.
0.7 mm (ID) to 1.2 mm (ID) fibre membrane strands handling different feed water’s turbidities.
The selection of a hollow fibre membrane strand’s inner diameter (ID) – or diameter of the lumen – is subject largely to the level and removal rate of feed water’s turbidity (and cross-flow efficiency). Outer diameter of the membrane strand, on the other hand, affects the number of membrane strands that may be contained within a UF module, and hence affects the total membrane’s filtration surface area and flux. Our range of membrane fibre’s diameters allows us great versatility in optimising flux while reducing feed water’s turbidity effectively.
Pore size matters.
We have a range from 0.002 to 0.1 microns to choose from.
Our membranes’ pore sizes range from 0.002 to 0.1 microns (or of approximately Molecular Weight Cutoff – MWCO – rates of between 6,000 to 150,000 Daltons). Right pore size is crucial for optimising the flux of membrane, while achieve the desired turbidity, Silt Density Index (SDI) and removals of contaminants etc of feed water. Though removing more undesired contaminants, smaller membrane’s pore sizes undermine flux and increase capital and operating costs of UF systems. Our reasonable range of membrane’s pore sizes enables us to optimise the UF systems more precisely for each application.
High flux. Low fouling tendency.
Our PES, PVC and PVDF membranes are modified highly hydrophilic materials. The membrane surface has great affinity to water and will not be easily fouled with oil, grease or other hydrophobic substances such as colloids. In contact with water droplets amidst the ambient environment without additional pressure, our membrane surface achieves a contact angle of less than 500 with the water droplets, testifying the excellent hydrophilic property of our modified PES, PVC and PVDF membrane materials.
Tough double-walled hollow fibre membrane.
Withstand high TMP. Long lasting performance.
Our hollow fibre has a dense layer on the inside and outside surfaces that adds to its strength. Produced with uniform pore size and dense distribution of pores, it acts as additional filtration barriers without undermining the flux performance. UF systems being operated to produce constant permeate flow, transmembrane pressure (TMP – the difference in pressure between the filtrate and the permeate sides of the membrane) naturally increases before each backwash cycle. Double-walled membrane fibre withstands such pressure better, and sustains longer service life.
Chemical tolerance feature ensures long membrane’s service life.
To prevent fouling and scaling on the membrane surface, and to recover the performance of the membrane regularly, Clean-In-Place (CIP) and Chemical-Enhanced Back-Flush (CEBF) processes are performed on the membrane from time to time. These processes involve chemicals such as chlorine (NaOCl) as disinfectant, H2O2 as oxidant, NaOH (caustic) etc. Our membrane materials are highly chemical-tolerant. This strength allows our membrane being cleaned effectively by various chemicals especially for treating highly contaminated water, while helps prevent it from becoming bristle and being susceptible to breakage over time. It ensures our membrane’s constant performance and long service life.
Multiple technical advantages.
Versatility in selection for optimal performance.
In today’s increasingly polluted water sources and the increasing demand to recycle wastewater at points of use, one type of filtration media or UF membrane may not be optimally suitable to purify all kinds of water. Our selective range of modified PES, PVS and PVDF hollow fibre membranes provides us with great versatility, where integration of our eventual UF systems is concerned, to cater to a wide spectrum of feed-to-product water requirements.
For examples, while with varying fibre’s pore sizes, inner and outer diameters and modules’ configurations, we generally apply our PES membrane for potable water and food-grade applications, PVC membrane for non-food-related industrial processing and grey water recycling needs, and PVDF membrane for purifying exceptionally contaminated feed water or reclamation of pre-treated industrial wastewater. The availability of different UF membrane materials, our great depth and breadth of UF application and systems’ integration expertise all work effectively towards providing you with intelligent, optimal-performing and cost-effective systems to meet your long-term needs for clean water.