Membrane filtration for sanitary use The complete line

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Dead-End-Filtration Fine-tuned filtration Alfa Laval is one of the world’s major suppliers of industrial separation technologies. We have a proud tradition of providing virtually all industries with separation equipment based on centrifugal and mechanical principles. However, there are many processes in which the substances involved are too delicate to be able to withstand such treatment. The gentle alternative Membrane filtration separates out the different components in a feed stream on the basis of the size and shape of the micro-particles within it. And the better the filtration, the better...

How membrane filtration 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 forces 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...

Microfiltration Alfa Laval microfiltration (MF) membranes are extremely cost-effective to operate, largely as the result of the low energy consumption involved. They also have the advantage of eliminating the frequent replacement and disposal of the cartridges and other consumables used in traditional dead-end filtration. Alfa Laval microfiltration membranes are extremely durable, with service lives that can extend over more than five years. Microfiltration is used on feed streams where the aim is to remove smalldiameter dispersed solids such as bacteria, fat and oil globules without affecting...

Flow pattern in a spiral-wound membrane element. Red is feed/retentate. Yellow is permeate. Spiral-wound membranes The unique design of Alfa Laval spiral-wound membrane elements makes sure the feed stream passes through the element under the best possible flow conditions. This ensures the most efficient separation and superior flux, and that each element has a long service life and is easy to clean. The core of each spiral element is a perforated central tube, with large membrane pockets attached. Each of these contains a spacer net that transports the permeate out of the membrane pocket and...

Plate-and-frame membranes Flow pattern in a plate-and-frame unit. Red is feed/retentate. Yellow is permeate. Basic membrane filtration principles are the same regardless of whether the membrane is rolled into a spiral element or cut into flat sections to fit into plate-and-frame units. The types of membranes used for spiral-wound elements are therefore also available as flat membranes for use in the unique plate-and-frame units manufactured by Alfa Laval. Such units are most appropriate when the retentate has a high viscosity. A plate-and-frame unit is designed with open channels across the membrane...

LKH-Multistage Pump Specifically designed for high outlet pressures, and used as feed pumps in reverse osmosis and nanofiltration installations. Pressure range up to 40 bar. Used in both spiral and plate-and-frame filtration installations. LKH Centrifugal Pump Used as feed and recirculation pumps in both spiral and plate-and-frame filtration installations. Ideal for when combinations of low pressures and high flow rates are required, as in microfiltration and ultrafiltration. Pressure range up to 10 bar. Getting the pressure right The efficiency of membrane filtration systems depends heavily...

Alfa Laval also provides a wide range of the special ancillary equipment, fittings and accessories needed for installing the membranes used in spiral-wound and plate-and-frame systems, and for operating them safely and efficiently. These items must be approved for pressure classifications of as much as 60 bar in cases where the membrane filtration process requires high operating pressures. All these components are also designed to maintain the best possible hygiene conditions, and to comply in full with FDA and EU regulations, as well as 3A sanitary standards and USDA requirements. Make the connection...

Solutions for your application Alfa Laval provides high-hygiene membranes for all needs, from microfiltration to reverse osmosis. Every type ensures you an efficient, reliable product that does its job effectively and for a long time. Our experience extends over many different industries in which sanitary standards and exceptional levels of hygiene are important. We can supply both general-duty membranes and solutions designed to tackle specialist assignments. And we have both the know-how and the products to provide you with the best solution across a wide spectrum of viscosities, pH values...

Service that boosts efficiency We have most types of membrane – for both spiral and plate-and-frame installations – in stock at all times. This means rapid dispatch and short delivery times. Easy and straightforward Purchasing Alfa Laval membranes is an easy, rapid and straightforward process. A specialist sales team deals promptly with any enquiries you may have. This gives you direct, easy access to the advice and in-depth know-how crucial in helping you run your membrane filtration operations efficiently. You can contact us directly for advice, and order via our special web-based e-Channel...

Alfa Laval in brief Alfa Laval is a leading global provider of specialized products and engineered solutions. Our equipment, systems and services are dedicated to helping customers to optimize the performance of their processes. Time and time again. We help our customers to heat, cool, separate and transport products such as oil, water, chemicals, beverages, foodstuffs, starch and pharmaceuticals. Our worldwide organization works closely with customers in almost 100 countries to help them stay ahead. How to contact Alfa Laval Up-to-date Alfa Laval contact details for all countries are always...