September 2008
Volume 50 Number 9
 
Cover
Mixed Oxidant Technology Treats Water in Rwanda
by Craig Milroy
Plagued by a legacy of civil war, ethnic genocide and the HIV/AIDS epidemic, many rural communities in Rwanda lack access to adequate drinking water. Although many inhabitants purify water by boiling, this time-consuming and energy-intensive practice is impractical for most.  read more
 
Targeting Sanitation in Bolivia
by Abraham Aruquipa
In rural Bolivia, a toilet is seen as a beautiful thing-a fancy luxury that is much too fine to be used for its intended purpose. Instead, toilets might be used to store potatoes or even live chickens. To have a toilet is a status symbol, whether or not it is operational or even outfitted with running water or pipes.  read more
 
Pumping Pure Water in the Philippines
by Berle Taylor
The year was 1995. Our son Eddie had returned six months earlier from a youth mission trip to the island of Mindanao, in the city of Butuan in the Philippines. One day he exclaimed,'Dad, I think she is the one!'  read more
 
Water Treatment Device Design Considerations
by Duane Dunk and Gregg McCarthy
Many of us have seen neighborhood kids zipping around at 25 mph on electric-powered scooters (hopefully wearing safety helmets). But none of us would expect that the same tiny scooter motor could power a 1.5 ton automobile down the street at the same 25 mph.  read more
 
Features
UV Light Solutions for Emerging Ballast Water Treatment Systems
by Jon McClean
High-power, compact UV systems are now being used to prevent the transit across the globe of a wide variety of organisms in ships' ballast water. Ballast water is taken on board in ports of call to maintain stability when the vessel is not laden and discharged as the vessel becomes laden with cargo.  read more
 
Test Your Basic Activated Carbon Knowlege
by Barbara Sherman, Henry Nowicki, George Nowicki and Wayne Schuliger
Recently we provided a glossary of terms for activated carbon users, suppliers and manufacturers.(1) We took the time to prepare that glossary because our experience with clients has shown us that we can help avoid misunderstandings and provide better client services if we are speaking the same language with associated concepts.  read more
 
Ozone Treatment of Iron, Manganese and Sulfide Ion, Part 3
by Water Quality Association Ozone Task Force
As there are a number of factors inhibiting ozone's ability to become dissolved in water, there are also factors that can inhibit ozone's ability to remain dissolved in water. The final installment of this three-part series will discuss the decomposition of ozone and how the effect of ozone can be measured or ozone itself can be measured in water.  read more
 
Web Exclusive
Columns
A Family Legacy Under the Big Sky
by Denise M. Roberts read more
 
Big-Time Lender, Small-Town Touch
by Donald A. Mounce read more
 
Chemical and Mechanical Reduction Claims on Carbon Block Filters
by Rick Andrew read more
 
Bisphenol A -- Health Risk or Media Hype?
by Kelly A. Reynolds, MSPH, Ph.D. read more
 
Viewpoint: Changes and Feedback
by Donald A. Mounce read more