LabStak
Alfa Laval offers a wide range of small-scale LabStak modules which are ideal for on-site testing. Valuable data is gained for evaluation of process feasibility, determination of design and up-scaling, optimization of existing production lines or processing of high-value products.
Small-scale LabStak-? modules
In order to ensure the optimum solution, it is often advisable to conduct experiments on a small scale. These can be used to establish process feasibility, determine design data for up-scaling, optimize existing production lines or even carry out small-scale processing of high-value and/or low-volume products.
Our range of LabStak? modules is based on the unique plate-and-frame design with the module sizes: M10, M20, M37, M38 and M39. The liquid capacity of our LabStak? modules varies from only 57 ml of test media volume in the Alfa Laval LabStak? M10 module up to 3 litres in the Alfa Laval LabStak? M39H module. It is possible to test all filtration processes: Reverse osmosis, nanofitration, ultrafiltration and microfiltration.
For the Alfa Laval LabStak? M20 module we offer the possibility to test also spiral wound membranes as the module can be equipped with a specially designed M20-2.5" housing. This makes it a perfect tool for initial spiral element testing before screening on flat sheet membranes.
On-site testing or at Alfa Laval pilot facilities
Alfa Laval provides small-scale modules, units and pilot plants for testing on-site in connection with other process equipment and for testing at our own state-of-the-art Membrane and Application Development Test Centre in Nakskov, Denmark. In both cases, we also provide highly skilled process consultancy services.
Benefits
- You can make the first screening evaluations in your own laboratory and thus get the correct answers to vital questions
- The same design is used for both small-scale and industrial scale equipment which allows you to develop new processes and products
- The data gathered is accurate and reliable for easy up-scaling
- Alfa Laval has its own membrane and application development test centre where experts are ready to help you with process know-how and test work
- You can conduct experiments with both plate-and-frame and spiral wound module configurations - and all filtration processes
膜过滤的工作原理
物理分离
膜过滤是一种物理分离过程，其驱动力是特殊膜两侧的压力差。这一过程的特点是能够分离不同大小和特性的分子。
几乎所有的工业膜过滤都是以错流过滤的方式进行的，即被过滤的液体在压力作用下以高速平行于膜流动。
物理屏障
最基本的膜过滤是将单一的进料流通过膜系统，将其分离成两股独立的流，即渗透液和回流液。将它们分开的膜是一种具有高度专业特性的物理屏障--一种只有进料流中某些特定成分才能通过的屏障。
通过
这种膜材料的孔隙非常小，以埃（10-10 米）为单位，需要施加压力才能迫使液体通过。事实上，用于纳滤和反渗透的膜的孔隙非常小，即使用扫描电子显微镜也无法看到。
Long experience with membranes
Alfa Laval's experience within membrane filtration dates back almost as far as the technology itself, and we wish to share our experience with you.