By Dave Rutz The recent citywide water crisis in Flint, MI has aimed a spotlight on the nation’s outdated and declining drinking water infrastructure. The city’s water, tapped from the Flint River, wasn’t treated properly. Lead from aging municipal service lines seeped into the city’s municipal water supply and wasn’t filtered out … [Read more...]
The Capacity of Ion Exchange Resin
By C.F. ‘Chubb’ Michaud, MWS Ion exchange 101: defining and measuring capacity Webster’s Dictionary defines capacity simply as “the ability to do something” or “the maximum number that can be contained.” This is a quantitative value. In ion exchange processes, we define not only the quantitative capacity of … [Read more...]
WQA Convention and Exposition Schedule
Tuesday, March 28 7:30 AM-5:00 PM: Registration Desk Open, West Hall E Lobby (Orange County Convention Center) 8:00-8:50 AM: Trends & Critical Issues (0.1 CPD), Room W230 C/D 8:00-8:50 AM: Dues Honor Roll Forum, Room W224 H 9:00-9:50 AM: International Section/International Standards & Regulations, Room W232B 9:00-9:50 … [Read more...]
The Chemistry of Ion Exchange
By C.F . ‘Chubb’ Michaud, MWS Chemistry 101: elements, compounds, acids, bases, salts and ions All of the chemicals listed in The Periodic Table of the Elements (see Figure 1) are made up of atoms, which are combinations of electrons (negative charge), protons (positive charge) and neutrons (neutral charge). … [Read more...]
WQA Schedule of Events
Tuesday, March 28, 2017 8:00-8:50 AM: Dues Honor Roll Forum 8:00-8:50 AM: Trends & Critical Issues (0.1 CPD) 8:00-9:20 AM: Manufacturer/Supplier/Retailer Section 9:00-9:50 AM: Lead Treatment Threshold in POU Filters (0.1 CPD) 9:00-9:50 AM: International Section/International Standards & Regulations 9:00-9:50 AM: … [Read more...]
It’s Showtime in Orlando!
By Denise M. Roberts By now, most who will be attending the Water Quality Association’s Annual Convention and Exposition in Orlando, FL (March 28-31) will have made their hotel/flight reservations. Now it’s time to take stock of what to do when you arrive. There are always a multitude of educational seminars, certification … [Read more...]
Tapping into the ECHO Database
By Hubert Colas, PhD Community water systems are defined as providing water to the same population year-round, which are effectively municipal-residential systems. This is different than the two other US EPA-defined classifications: non-transient non-community water systems and transient non-community water systems, which represent … [Read more...]
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 charge polarity strength. When driving pressure is applied and, depending on the material, pore size and … [Read more...]
Seven Decades of Packard Culligan Celebrated
By Derek Packard Packard Culligan group celebrated its 70th anniversary in conjunction with its annual managers meeting at the historic St. Paul Hotel in St. Paul, MN, October 18-20. Present at the meeting were all managers from the organization as well as select key leaders. The hotel was a fitting site for the meeting and anniversary, … [Read more...]
California Groundwater Association Annual Convention Recap
By Denise M. Roberts One of the more pleasant aspects of the California Groundwater Association’s annual convention is the close-knit relationships and overall camaraderie among both attendees and vendors. Although this is a contractor-heavy event, it’s apparent that the variety of products and services available to anyone involved in … [Read more...]
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