Sustainable Decentralized Water Treatment for Rural and Developing Communities Using Locally Generated Biochar Adsorbents

October 24, 2012 by dstadtler

By Josh Kearns, MS Synthetic chemical water contaminants: an often overlooked challenge in international sustainable community development [caption id="attachment_639" align="alignright" width="300"] Figure 1. Scanning electron…

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Water Softener Performance Testing

March 8, 2012 by dstadtler

by Mark T. Unger The first performance standard for water softeners was the Water Conditioning Foundation’s (WCF) S-100 Standard. The first version was issued in…

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Reduction of Chloramines in Drinking Water Using Catalytic Carbon

February 24, 2012 by dstadtler

By Vivekanand Gaur, Ph.D. Introduction Instead of using chlorine, drinking water utilities are gradually switching over to the use of chloramines—in particular, monochloramine—for disinfection of…

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Low-Energy (LE) RO Membranes

January 18, 2012 by dstadtler

by By Michael Kim, CWS-I Background In the early 1980s, RO membranes had a typical salt rejection of 96 percent at 225 psi operating pressure.…

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Reverse Osmosis Technology – Not Just for Water Purification

January 17, 2012 by dstadtler

By Peter S. Cartwright, P.E. The membrane technology of reverse osmosis has been around for many years now and is finding more and more applications…

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