Membrane filtration (MF, UF, NF, RO)
Membranes represents very fine filters, which act like sieves through which water is either pressed or sucked. Any content, which is larger than the microscopic pores, is uanable to pass and depending on the fineness of the filter, a differentiation is made between micro-, ultra- and nanofiltration. Reverse osmosis is an additional variation, in which only water molecules pass through the membrane.
Ultrafiltration membranes have established a position in the drinking water sector because they filter water to such an extent that it is virtually free of solids and, most organics. Bacteria, parasites and viruses are not killed off, but entirely removed from the drinking water since they are large than the pores of the membrane.
WABAG has been using this membrane process in combination with conventional cleaning processes for many years and due to this experience and in-house innovations, has built up a pool of comprehensive expertise. Company know-how relates to an extensive knowledge of the performance and applications of the various membrane types and combinations with other treatment phases to meet specific requirements on a case-to-case basis. WABAG offers a diversity of membrane processes and selects the best and lowest-cost variation for each application.
Key Features:
– Complete removal of turbidity and color
– Mechanical “disinfection”
– Low space requirement
– Modular design
– Membranes as absolute barriers
CERAMOPUR®. Ceramic Membrane Filtration. Indestructible.
With a pore size of around 0.1 µm, the ceramic membrane operates in the microfiltration range. This means that large quantities of water can be filtrated per m² of membrane surface. When combined with flocculation or oxidation, the degree of separation that can be achieved is similar to that of ultrafiltration. The ceramic membrane offers many advantages over standard ultrafiltration membranes made from synthetic material. Ceramic is completely insensitive to pH and does not oxidize. What’s more, this material is extremely hard and stable (monolithic), which enables highly efficient backwashing using high-pressure water.
Key Features:
– Complete removal of turbidity and color
– High recovery rates
– Very high flux (specific flow through membrane)
– Resistant to chemicals and ozone
– Life span of membrane cassettes approx. 30+ years
CERAMOZONE® – Ceramic membranes combined with Ozone.
What makes the ceramic membrane unique is the nature of the material. In contrast to “normal” membrane fibers, which are quickly destroyed by ozone, ceramic membranes respond positively to any residual ozone in the water: the ozone contained within the water minimizes the fouling potential on the membrane surface. In a best-case scenario, there is no longer any need for chemically enhanced backwashing. This process has already been tested by WABAG on a pilot-project scale using different grades of water. The technology is now ready for use on a large scale.