Guest Column | March 14, 2018 | Reproduced with Permission of Water Online By: Harold G. Fravel Jr., Executive Director, American Membrane Technology Association (AMTA) and Karen Lindsey, Vice President, Avista Technologies, Inc. A deep dive into reverse osmosis (RO) elements reveals the importance of feed channel spacers for optimal membrane filtration system performance. Understanding the …
Water Online Guest Column Articles
How To Control Filter Cake And Membrane Surface Fouling
Guest Column | March 20, 2017 | Reproduced with Permission of Water Online By: Harold G. Fravel Jr., Executive Director, American Membrane Technology Association (AMTA) and Karen Lindsey, Vice President, Avista Technologies, Inc. Who wants cake? Certainly not treatment plant operators who employ microfiltration and ultrafiltration membranes, and here’s what they’re doing about it. The increasing …
Industry Innovations for RO Concentrate: A Challenging Liability Becomes a Valued Asset
Guest Column | September 21, 2016 | Reproduced with Permission of Water Online By: Harold G. Fravel Jr., Executive Director, American Membrane Technology Association (AMTA) and Karen Lindsey, Vice President, Avista Technologies, Inc. Unlike dead-head filtration characterized by a single flow in and out, both Reverse Osmosis (RO) and Nanofiltration (NF) technologies are unique in that …
In The Beginning….The Origin of Membranes as told by the Industries Seasoned Pioneers
Guest Column | March 14, 2016 | Reproduced with Permission of Water Online By: Harold G. Fravel Jr., Executive Director, American Membrane Technology Association (AMTA) and Karen Lindsey, Vice President, Avista Technologies, Inc. In 2011, the American Membrane Technology Association (AMTA) embarked on an ambitious effort to preserve the history and evolution of the membranes industry. …
Dynamic Improvements in Low Pressure Membranes and System Design
Guest Column | January 20, 2016 | Reproduced with Permission of Water Online By: Harold G. Fravel Jr., Executive Director, American Membrane Technology Association (AMTA) and Karen Lindsey, VP, Avista Technologies, Inc. We are programmed to believe that the word “fouled” is inherently bad, identifying something that is dirty, unclean, or contaminated. But for those of …