memsys presents a revolutionary process: a thermal Vacuum-Multi-Effect-Membran-Distillation (V-MEMD), for e.g. seawater desalination. This process has several advantages compared to current technologies: 1) Energy advantage: uses low-level waste energy 2) Investment cost advantage: uses non-steel materials 3) Operational cost advantage: reduces maintenance and increases efficiency 4) Ecological advantages: eliminates chemical pre-treatment 5) Full modularity: increases flexibility and scalability