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Ultrafiltration  has set a new standard in membrane filtration with  pronounced improvements in energy efficiency, reduced  water wastage,  reduced risk of membrane fouling and  rupture.     Our range of Polymem Ultrafiltration  systems are  high quality and trusted by   major brands including Danone   and also many municipalities worldwide . 

Modules NSF and ACS approved

  • Description
  • Size Guide



Polymem France is the worlds leading manufacturer of high quality ultrafiltration systems  for potable and waste water applications.  The ultrafiltration systems are available in all capacities from residential to industrial applications .   Any source water can be treated  provided that the  raw water is adequately pretreated.   The  Polymem Ultrafiltration units are available  with automated backwash and also chemically enhanced backwash options.   

Ultrafiltration clarifies and disinfects the water in one step.

Ultrafiltration is an alternative to conventional filtration for water clarification, with a significant improvement in the effectiveness of treatment (reduction of the turbidity to less than 0.2 NTU) which is obtained regardless of the quality of raw water treated and without chemicals addition.

Ultrafiltration often replaces other more conventional treatment techniques and microfiltration as well, as it has the capacity to eliminate not only small particles but also pathogenic flora including microorganisms, viruses, pyrogens and some dissolved organic species.

Ultrafiltration enables the treatment of waters with up to 300 mg/l total suspended solids (TSS) in pressurised filtration mode, and up to 15 g/l in suction mode (membrane bioreactors).

Ultrafiltration for rural and commercial applications


 How it works:

UF is a purely physical treatment able to treat any kind of water achieving the same purifying efficiency.

Ultrafiltration is a process where the driving force is the pressure of the liquid to be treated (0.5 to 1.5 bars). Pressurised water enters the module and treated water (called filtrate or permeate) passes through the membrane barrier.

Fibre Polymem - Vue microscopiqueThe retained substances are captured on the membrane surface and continuously or periodically removed from the module, depending on the filtration mode (cross flow or dead end), in the concentrate or in the backwash effluent.

The pore size is about one hundredth of a micron, allowing the retention of very small particles, providing a permeate turbidity of the less than 0.1 NTU, but also of micro-organisms and viruses (disinfection), of pyrogens…

The porous structure of membranes presents a very thin layer called “skin” on the filtration surface, with the smallest pores, while the rest of the thickness (more than 100 μ) has pore diameters of about a micron. The “skin” ensures the retention capacity while the internal structure of the fiber allows an easy passage of the filtrate.

Ultrafiltration is thus a filtration “on the membrane surface”, unlike microfiltration which is a “depth filtration” (MF pore size is the same over the entire thickness of the fiber).

Ultrafiltration (UF) membranes are used for the rejection of suspended solids (turbidity), algae, Cryptosporidium, Giardia, coliform, bacteria and viruses.

The reduction of the turbidity to less than 0.2 NTU (generally less than 0.1 NTU) is assured regardless of the quality of the water to be treated


Applications Ultra filtration 

Drinking water

From all kind of fresh water (groundwater, river water, lake water, karst water…), Polymem ultrafiltration, as the  primary  treatment or complemented in an existing water treatment process  allows production of an excellent and constant water quality regardless of the quality of the raw water.

– Turbidity <0.2 NTU 100% of the time
– Elimination of 99.9999% of microorganisms
– Removal of 99.99% of viruses
– Production and quality guaranteed
– Modules NSF and ACS approved

Modules to be used : ULTRAMEM and GIGAMEM® ranges

Ultrafiltration effective removal of bacteria , viruses, cysts

Benefits Ultrafiltration

  1. No need for chemicals (coagulants, flocculates, disinfectants, pH adjustment).
  2. Ideal for drinking and beverage  water sterile  filtration where the natural occurring minerals are retained.
  3. Provides more stable and less corrosive water in drinking water applications.
  4. Size-exclusion filtration as opposed to media depth filtration;
  5. Good and constant quality of the treated water in terms of particle and microbial removal;
  6. Process and plant compactness; and simple automation.
  7. Low fouling membrane modules
  8. Excellent filtration performance with high flux
  9. High chemical resistance and temperature tolerance for effective membrane cleaning
  10. Very fine nominal pore diameter (0.03 µm)
  11. High removal efficiency of bacteria and viruses
  12. Dead-end or concentrate bleed flow capabilities
  13. Can be periodically back washed and air scoured to improve performance and extend operating life by removing the fouling layer
  14. Simple, vertical, modular design allows low cost, compact systems
  15. UF Outside-In or Inside-Out Configuration allows for less plugging and higher solids loading, higher flow area and easier cleaning.

Typical applications are:

  • Sterile filtration of drinking  and beverage water
  • Treatment of surface water
  • Recovery of filter backflushing water
  • Separation of oil/water emulsions
  • Recovery of electrodeposition paint
  • Removal of metal hydroxides in wastewater treatment
  • Separation of biomass in biotechnology
  • Wastewater treatment and re-use
  • Membrane bioreactors


Danone  3000 m3/day World class filtration of Karst water

Brochure Aquamem R- Safe Water_GB(7)

Ultrafiltration module UF80G-S2 Specifications