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 .
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.
The 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
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
No need for chemicals (coagulants, flocculates, disinfectants, pH adjustment).
Ideal for drinking and beverage water sterile filtration where the natural occurring minerals are retained.
Provides more stable and less corrosive water in drinking water applications.
Size-exclusion filtration as opposed to media depth filtration;
Good and constant quality of the treated water in terms of particle and microbial removal;
Process and plant compactness; and simple automation.
Low fouling membrane modules
Excellent filtration performance with high flux
High chemical resistance and temperature tolerance for effective membrane cleaning
Very fine nominal pore diameter (0.03 µm)
High removal efficiency of bacteria and viruses
Dead-end or concentrate bleed flow capabilities
Can be periodically back washed and air scoured to improve performance and extend operating life by removing the fouling layer
Simple, vertical, modular design allows low cost, compact systems
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
Danone 3000 m3/day World class filtration of Karst water
The 0.01 micron home water purification filtration module provides a very economical method to produce safe drinking water removing all bacteria, viruses and cysts from your water supply, whilst retaining any naturally occurring minerals. Constant high quality water at high water flow rates of up to 1000 l/hr guaranteed with minimal loss of treatment waste.
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. The benefits of ultrafiltration are numerous including low fouling membrane modules, excellent filtration performance with high flux and high chemical resistance and temperature tolerance for effective membrane cleaning.
The 0.01 micron KCW-1000 water purifier provides a very economical method to produce safe drinking water removing all bacteria, viruses and cysts from your water supply, whilst retaining any naturally occurring minerals. Includes a KDF filter for removal of any residual chlrorine. Constant high quality water at high water flow rates of up to 1000 l/hr guaranteed with minimal loss of treatment waste.
The 0.01 micron membrane stainless steel ultrafiltration module provides a very economical method to produce safe drinking water removing all bacteria, viruses and cysts from your water supply, whilst retaining any naturally occurring minerals. Includes second stage Calgon activated carbon and KDF filter to remove any residual chlorine . Constant high quality water at high water flow rates of up to 800 l/hr guaranteed with minimal loss of treatment waste. High flux filtration at a fraction of the cost of RO systems with similar capacity.
The KCW-006 alkaline ultrafiltration system comprises of 4 Stages of filtration including ultrafiltration and anti-oxidant water purifier providing healthy anti-oxidant water with a high mineral content. Drinking Alkaline water with added minerals has been proven to have significant health benefits!
The best portable filter on the market to produce safe and contaminant free water.
The Litree Travelsaver provides three stage filtration including 0.01 micron ultrafiltration to convert surface water from a creek, dam or rain water tank into safe drinking water. Provides safe drinking water on the go, whether camping, travelling or on holidays and just unsure about the safety of the water source.
Compact 0.01 micron countertop ultrafiltration system for removing viruses, bacteria and cysts in water without removing naturally occurring minerals in the water. Ideal for point of use applications like the kitchen where safe drinking water is required. The carbon filter provides protection for other contaminants including chlorine, chloramine and other organic compounds.
The 0.01 micron Litree Double Star membrane filtration module provides a very economical method to produce safe drinking water for commercial applications removing all bacteria, viruses and cysts from your water supply, whilst retaining any naturally occurring minerals. Constant high quality water at high water flow rates of up to 4000 l/hr guaranteed with minimal loss of treatment waste. The Litree Double Star ultrafiltration system has a proven track record and has been installed in some of the worlds' largest hotel chains and resorts.
PWT hollow fiber ultrafiltraon (HF UF) membrane elements provide reliable rejection of microorganisms and viruses with low operating costs. PWT hollow fiber membrane elements are offered in standard RO Membrane sizes for use in standard pressure vessels. Our hollow fiber UF elements are ideal for use in small commercial, point-of-use and point-of-entry applications