Alfa Laval NF spiral

Category - Membranes

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Our Our product profile contains a wide range of equipment of the Alfa Laval. Alfa Laval manufactures powerful and creative goods that always find the solution for the tough industrial problems at any time. The Alfa Laval achieves the high standards of equipment performance while creating the modern technologies that strengthen the working cycle of the industries. The Alfa Laval Alfa Laval NF spiral is one of the flawlessly developed equipment. Alfa Laval Alfa Laval NF spiral presents high degree of precision, which offer wide range of automatic and electric resolutions to fulfill all application needs. Because of the high quality of constituents, Alfa Laval Alfa Laval NF spiral secure long term functioning.
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Description

Alfa Laval nanofiltration spiral membranes (NF) are proven solutions for the high-yield concentration and demineralization of products such as antibiotics, whey and ultrafiltration permeate. They retain salts with a divalence in excess of 1 while small monovalent salts pass into the permeate. They can also be used for producing low-alcohol beverages with the alcohol component passing through the NF membrane, while the colour and aroma remain in the retentate. Reduce overall production costs and boost product quality

Cost effective operation thanks to low energy consumption
Flexible – available in different combinations of length, diameter and spacer size
Efficient - allows the simultaneous desalting and concentration of a range of products in various processes
Minimal floor space required – compact design
Extremely durable – excellent chemical and thermal stability and service life up to several years

Alfa Laval’s experience in membrane technology is as long as membrane filtration technology itself (more than 50 years). We offer two series of nanofiltration membranes with different salt rejections and flux properties. The NF spiral membranes, which are manufactured in house at our own special facility, use a unique construction of a thin film composite polyamide membrane with polyester (PET) support material. The NF membranes are available as both flat sheet (for screening or lab work) and spiral (larger applications) which is an advantage when you scale up. The nanofiltration membranes are available with different NF membrane types and in different combinations of length, diameter and feed spacer size. . A range of nanofiltration membranes Our nanofiltration membranes feature pores down to 300 Daltons. Operating at pressures of up to 50 bar, the membranes allow small ions to pass through the membrane, while retaining larger ions and most organic components. NF Membrane Series Alfa Laval offers two types of spiral membranes for nanofiltration: NF and NF99HF. Both types are made of thin film composite membrane cast on polyester support. The rejection capacity for both is &ge,99% (based upon magnesium sulfate). All types are USDA approved and we can offer products with Halal certificates upon request. Our nanofiltration spiral membrane materials are compliant with all major regulations All membrane materials used for both spiral-wound and flat-sheet configurations comply with EU Regulation (EC) 1935/2004, EU Regulation 10/2011 and FDA regulations (CFR) Title 21, and are suitable for use in food and pharmaceutical processing applications. Compliance also extends to the related equipment and fittings, including items such as plate-and-frame units, element housings and pumps. How it works . The basic technology behind membrane filtration involves using a semi-permeable membrane to separate a liquid into two distinct streams. Pumping this liquid across the surface of the membrane creates a positive trans-membrane pressure that allows any components smaller than the porosity of the membrane to pass through, forming the permeate. Any components larger than the pore size simply cannot pass through, and remain behind in what is called the retentate. The surface of the membrane is kept free of blockages by the force of the liquid flow moving parallel to the membrane surface. Construction of the nanofiltration spiral membrane A spiral membrane comprises of a number of membrane 'envelopes' with 2 membrane sheets separated by a permeate spacer mesh, each glued to a central permeate collection tube. Between each pair of envelopes there is a spacer which creates the feed channel, allowing the feed to flow across the length of the spiral membrane, whilst the permeate passing through the membrane into the membrane envelope flows in a spiral pattern to the permeate collection tube. Red = Feed/retentate. Yellow = Permeate. The flow pattern in a nanofiltration spiral membrane where red represents the feed/retentate and yellow the permeate. . . Contact us Find out how our proven nanofiltration membranes can help you with your filtration operations. First name Last name Email Company Country Enquiry I consent to have my submitted information stored and processed in accordance with Alfa Laval privacy policy, so Alfa Laval can respond to my request. That information is stored and processed in accordance to our privacy policy. Submit . Related products MF spiral The Alfa Laval microfiltration membranes are based on more than 50 years of experience with membrane technology. about our products here. UF spiral The comprehensive range of ultrafiltration spiral membranes from Alfa Laval is a popular choice for many processes applied in the food, beverage, dairy, biotech and pharmaceutical industries RO spiral Reverse osmosis spiral membranes from Alfa Laval are used for the concentration of heat sensitive feed streams as well as product and water recovery from permeate streams and evaporator condensate Lab/pilot units Alfa Laval provides small-scale units and pilot plants for testing on-site in connection with other process equipment and for testing at our own membrane and application development test centre Auxiliary membrane equipment Alfa Laval provides all you need for a complete membrane system. We also offer a wide range of ancillary equipment and fittings needed for installing and operating the membranes safely and efficiently ''