Membrane technologies

Discover the Next Generation of Filtration Technology with ALIMA Food Processing Technology!

Over a Quarter-Century of Excellence. At ALIMA Food Processing Technology, an independent division of ALIMA-BIS, we transform over 25 years of experience in membrane filtration into future-ready solutions. Our team of experts in process engineering, project management, programming, and manufacturing guarantees top-notch services and products that revolutionize the processing industry.

Innovation Through Collaboration. Through close relationships with leading scientific institutions, scholars, and entrepreneurs worldwide, we continuously introduce innovative solutions. Our collaboration with clients is a process in which we create customized filtration systems that increase efficiency and reduce operational costs. Together, we strive to ensure that our technologies contribute to the growth of your company in the most economical way.

Comprehensive Service and Trust. With ALIMA Food Processing Technology, you can be confident that every aspect of your project is in the best hands. We offer full support at every stage – from design to final execution and service.

Join the Market Leaders! By choosing ALIMA, you join the ranks of businesses that are shaping the future of the processing industry today. Invest in the future by choosing the leader in membrane filtration technology.

Low flow pressure applied.
Selectivity:
bacteria, fat particles, enzymes, undissolved particles and suspensions.
Use:
clarification, bacteria and suspensions purification, separation of large particles and ‘cold sterilisation’.

Low flow pressure applied.
Selectivity:
bacteria, fat particles, enzymes, undissolved particles, suspensions, proteins and polysaccharides.
Use:
thickening, concentration and/or standardisation of proteins.

Flow pressure applied: 15-35 bar.
Selectivity:
bacteria, fat, enzymes, undissolved particles, suspensions, proteins and polysaccharides, mineral salts, free peptides and amino acids.
Use:
purification, thickening and demineralisation.

High flow pressure applied: 30-50 bar.
Selectivity:
bacteria, fat, enzymes, undissolved particles, suspensions, proteins and polysaccharides, mineral salts, free peptides, amino acids, monovalent salts, inorganic acids and bases.
Use:
permeate and water treatment, thickening, water removal and water recovery.

Our solutions are designed based on the specificity of the application. Depending on the characteristics of the raw material to be filtered and the desired parameters of the finished product, we build our equipment using the following types of membranes:

Ceramic membranes

Ceramic membranes are characterised by high chemical and thermal durability. Due to their material of construction, they can operate under the most extreme conditions, such as temperatures up to 120°C and across the full pH range (0-14). Combined with a long service life, they provide a highly cost-effective solution for many applications. What we offer includes MF and UF membranes, as due to their modular design, as well as their wide range of module sizes and membrane quantities, they are the right solution for small, medium and large complex projects.

Spiral Wound Polymer Membranes

Used for products with low contents of insoluble particles and suspensions. They offer the advantage of having a relatively large filter surface area and high efficiency. For these reasons, they are the most economical solution and are most commonly used of the different membrane types. Spiral membranes are offered in a full range of pore sizes: MF, UF, NF, RO.

Plate&Frame membranes

Designed with a special focus on demanding products with high viscosity and density. They are used for high-fat and highly concentrated products in the food and biotechnology industries (dairy products, biotechnology solutions, beer, beverages, juices, sugars). Their advantage is their high strength and resistance to both temperature and pH. We offer modules in the Plate&Frame configuration equipped with membranes for ultrafiltration and microfiltration processes.

Tubular membranes

These are intended for products with a high content of inadmissible particles and a very high degree of concentration – even above 50% of dry matter. The modular design allows you to select the size of the production scale. We offer a wide range of ultrafiltration membranes in terms of pore size and products processed.

Hollow-fibre membranes

Designed for low suspension applications, mainly in water treatment and industrial wastewater pretreatment, as well as the clarification of juices, non-alcoholic beverages, wine and beer. Due to their very high packing density, and thus relatively low energy consumption, they see particular use in large-scale industrial solutions. The Hollow-Fiber membranes we offer are dedicated to MF and UF processes.

An electrochemical separation process in which ions are transported through semi-permeable ion exchange membranes by means of a direct voltage. The ions, under the influence of an electric field generated between the electrodes, travel from a solution stream of lower concentration to a stream of higher concentration. The anions present in the feed stream move towards the anode until they meet the cation-exchange membrane – which is impermeable to them. Analogously, cations travel towards the cathode until they reach the anion-exchange membrane.

Types of Electrodialysis

Monopolar

Ion transport takes place through alternately arranged anion-exchange and cation-exchange membranes in a constant electric field. As a result of this directed ion flow and the transport of counter-ions and the retention of co-ions through the ion exchange membranes, two streams are produced in the process – a diluate (desalted stream) and a concentrate (concentrated stream).

Bipolar

The membrane system has two oppositely charged layers: anion exchange and cation exchange. In the production of acids and bases, the bipolar membrane is the basic element of the apparatus and, in addition, works together with at least one type of monopolar membrane. The most common system used in industrial practice is the three-chamber system, i.e. with one bipolar membrane and an anion-exchange and cation-exchange membrane. As a result of the subsequent dissociation of the water molecules in the bipolar membrane, the resulting hydrogen and hydroxyl ions are transported to the adjacent chambers, along with the salt ions. This creates new products: acid and base.

Use in the following applications:

• Dairy: demineralisation of cheese whey, demineralisation and reduction of lactic acid in acid whey, demineralisation of milk and permeates.
• Biotechnology: production of acids from organic salts.