memsys press release – June 1, 2014 memsys presents two papers at Singapore International Water Week (SIWW) SINGAPORE, June 1, 2014 – memsys®, a leading-‐edge developer of a breakthrough thermal separation process based on membrane distillation, will present two papers discussing applications of its patented thermal separation process during Singapore International Water Week. The papers are: • Distillation of High Concentrated Salt Solution by Vacuum Multi-Effect- Membrane-Distillation (V-MEMD) of memsys, authored by Markus Wenzel, Sebastian Büttner, Wolfgang Heinzl and Stephan Heinzl of memsys. Zero liquid discharge is a topic with increasing importance for salt water treatment. vacuum multi-‐effect-‐membrane-‐distillation (V-‐MEMD), a thermal separation process developed by memsys, may become a key technology in brine concentration. The effect of boiling temperature elevation of a salty solution leads to a reduced distillate output, which is illustrated in a direct comparison of operation temperatures within the module at test runs under equal boundary conditions with pure water and a water solution of 228 mS/cm. It is shown that a V-‐MEMD-‐module is able to produce distillate at conductivities below 10 µS/cm in a test run of 110 days duration with high concentrated sodium chloride water solution used as feed. This paper will be presented during the Water Convention, Theme 5 – Water for Industries, on Tuesday, June 3 at 11.15 am in Cassia Room 3203, Level 3. • Pilot Study of Pickling Liquid Treatment using a memsys Membrane Distillation System, authored by Sebastian Büttner, Wolfgang Heinzl, Markus Wenzel, Stephan Heinzl and Kui Zhao of memsys, and Prakash Devidas of Concord Enviro. The poster presentation focuses on the use of a memsys vacuum multi-‐effect-‐ membrane-‐distillation (V-‐MEMD) system to concentrate waste pickling liquid (WPL) from steel refinement plants. Pickling solutions are a result of the refining process of steel. The untreated steel is being placed in HCl acid baths of different concentrations, where it will be passivated by a protection layer. The remaining used acid bath solution is primarily contaminated with high Fe2+, Fe3+ and low HCl compounds. Strict requirements demand zero liquid discharge in steel refining plants, which involves several different technologies to concentrate waste pickling liquid (WPL) until crystallization. Page 1 of 2 Two papers at SIWW With low-‐grade waste heat (60 – 80°C), it is possible to supply the necessary thermal energy to drive the memsys process in low-‐vacuum. Tests with feed FeCl2 concentrations lower than wt. 30% and HCl concentrations lower wt. 2% were performed. The results promise that a memsys module is able to concentrate FeCl2 greater than wt. 33% and concentrate the dissolved HCl on brine or distillate side depending on operation conditions. Based on the measurement results, the FeCl2 brine concentration is close to saturation. Due to a very low pH-‐value in the feed, scaling is also avoided. The presentation is scheduled to take place on Monday June 2, 3.15 pm – 5.30 pm, in the Marina Bay Sands Level 3 Foyer, in Theme 5: Water for Industries. About memsys Based in Germany and Singapore, memsys (www.memsys.eu) is a leading-‐edge developer of vacuum distillation technology for various applications. Its patent-‐ protected thermal separation modules are used for wastewater treatment in the oil, gas and steel industries, brine concentration, low temperature distillation and low energy desalination or alcohol distillation. memsys’ robust technology is based on vacuum-‐ driven multi-‐effect membrane distillation (V-‐MEMD), a highly efficient thermal separation process in a compact, modular concept. These modules perform all steps of the membrane distillation process including a multi-‐effect energy recovery. memsys’ technology can be operated using waste heat to produce a high-‐quality distillate and effortlessly treats a variety of feed waters including wastewater feeds with high TDS content. # # # For more information please contact: Ann Seamonds Seamonds & Company +1-‐978-‐764-‐5528 [email protected] Page 2 of 2 Two papers at SIWW
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