Introduction to Membrane Separations

By Greg Reyneke, MWS In the water quality improvement industry, membranes are defined as physical barriers that separate solutions and allow passage of waterborne contaminants within a certain range of size, molecular mass, or even […]

Water Treatment—An Enigma of Its Own, Part 2

By Peter S. Cartwright, PE In Part 1, I addressed the wild claims and nonsensical science behind PWCs designed for scale control. This article is devoted to other water quality improvement claims of these and […]

Membrane Separation—More than Just RO

By Greg Reyneke, MWS Membrane separation is finally reaching a level of general acceptance as the powerful tool that it is for residential, commercial and industrial water treatment. Most dealers and users know about reverse […]

Membrane Separation and Filtration: Tried and True Technolo...

By Alan Murphy Introduction In reverse osmosis and nanofiltration membrane separation processes, membranes act as barriers against the normal hydrodynamic flow of water, thereby filtering liquids that contain high dissolved solids. This unique cross-flow filtration […]

A Look at the Present and Into the Future of Potable Water T...

By Peter S. Cartwright, PE Introduction Water. Along with air, it is one of the two most critical components for life. This discussion is focused on water, how it is used, abused and taken for […]

California Drought Prompts Innovative Water Reuse for Highwa...

By John Meland Background The San Diego Freeway (I-405) in southern California is one of the most congested freeways in Los Angeles County, carrying more than 300,000 vehicle trips daily on some sections. The area […]

H2O International’s Ivan Molina on Water Purification and ...

By Denise M. Roberts Expedition Adventure & Survival Training LLC (E|A|S|T LLC) Boca Raton, FL 33442 Tel: (561) 409-3953 www.eco-expeditions.com Facebook: www.facebook.com/xpeditionadventuresurvivaltraining info@eco-expeditions.com H2O International, Inc.’s Iván Molina Castrillón is a multifaceted, multitalented man with […]

Update on NSF/ANSI 419 Public Drinking Water Equipment Perfo...

By Rick Andrew In January, this column introduced a new draft standard from NSF in the area of water treatment. When the column was written in early December 2014, NSF 419 Public Drinking Water Equipment […]

A New Technology for Arsenic Removal

By Bob Brooks Numerous articles have been and continue to be written about the current methods for removing arsenic from drinking water. It is not the purpose of this article to rewrite what has already […]

Activated Carbon Principles and Practices for Drinking Water...

By Henry Nowicki, PhDm Wayne Schuliger, George Nowicki and Barbara Sherman Introduction The carbon industry has come a long way in its manufacturing process and understanding of how carbon works. US manufacturing got a big […]