Prior to launching its new line of reverse osmosis (RO) membranes, German chemicals company LANXESS said an “excellent water quality” was produced from the elements in a test run in Sharm El-Sheik, Egypt.
Deutsche MeerwasserEntsalzung (DME) GmbH, a Duisburg-based company were contracted by LANXESS to conduct the tests on the new Lewabrane RO S membranes.
Managing director engineer Claus Mertes said the elements “meet or exceed the relevant industrialstandards in continuous operation (24/7) under real conditions. They show high salt rejection even under fluctuating temperatures, salt contents and pH values, meaning that they deliver permeate in consistently high quality”.
The elements have been undergoing testing in Egypt since March 2014 in a commercial, industrial-scale desalination plant. Under otherwise comparable conditions and in compliance with all required process parameters, an excellent water quality was achieved at a high permeate flow, according to the chemicals company.
Following the test results, LANXESS launched the vessels at the Singapore International Water Week.
Three different elements are currently available: Lewabrane RO S400 HR, S440 HR and S085 HR 4040. The first two are 1,016 mm (40 in.) long with a diameter of 201 mm (8 in.), and have a membrane area of 400 and 440 square feet, suitable for use in all standard RO facilities. The third grade has a diameter of 101 mm (4 in.) and is suitable for smaller systems.
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