Aging Gracefully?

As U.S. water infrastructure continues to age, it is beginning to impact water quality. Jeff Zagoudis, contributing editor for Water Quality Products, spoke with Allan Connolly, vice president of operations and engineering at Culligan, about the problem and what is being done to solve it.

Jeff Zagoudis: How would you describe the current state of water infrastructure in the U.S.?

About The Author: 

Allan Connolly is executive vice president of operations and engineering for Culligan. Connolly can be reached at allan.connolly@culligan.com or 877.367.5479.

Publication Date: 
February 24, 2012
Activation Date: 
February 24, 2012
Issue Reference: 
Legacy
Legacy ID: 
23242

Key Issues & Industry Updates

Water Quality Products invited Joseph F. Harrison, P.E., CWS-VI, technical director of the Water Quality Association (WQA), to give an overview of current industry issues and what to expect at the upcoming Mid-Year Leadership Conference, to be held Sept. 5-7 in Nashville, Tenn.

Activation Date: 
August 29, 2007
Files: 
Legacy
Legacy ID: 
18487

Desalination Challenges

Overcoming measurement obstacles in the desalination process

About The Author: 

1. Jessica Blanchard and Carol Smith, Seattle Post-Intelligencer, May 2, 2006. Arsenic Taints Water at 5 Schools.
2. www.ens-newswire.com, Lead levels
in DC Drinking Water Dropping,
March 14, 2005.
3. ELAN DRC-e at Washington Suburban Sanitary Commission Helps to Resolve a Lead-Contaminated Drinking Water Crisis, PerkinElmer Case Study 007291_01.
4. John Tonner, Desalination in America, Water Quality Products, November 2002.
5. Ruth E. Wolf and Kenneth R Neubauer, Determination of Arsenic in Chloride Matrices, PerkinElmer Application Note D6357A, 2002.

Activation Date: 
January 1, 2006
Issue Reference: 
Legacy
Legacy ID: 
17100

RO Membrane Technology

Desalination systems based on reverse osmosis technology are increasing the availability and quality of clean drinking water in Toas Island in Lake Maracaibo, Venezuela

Deck: 

Advances Improve Global Access to Clean Water

About The Author: 

Jorg Menningmann is the general manager at ITT – Aquious Water Equipment Technologies. Menningmann has a degree in Ocean Engineering from Florida Atlantic University in 1977. He has served as a principal investigator projects for the Office of Water Research and Technology to collect and analyze data on 24 commercial membrane type desalination facilities, as well as a proposal engineer for a variety of reverse osmosis desalination applications. Additional information is available at 561.684.6300 or at www.itt.com.

Activation Date: 
April 4, 2005
Files: 
Issue Reference: 
Legacy
Legacy ID: 
15930

Water Treatment Desalination Systems Improve Efficiency and Maintenance Costs

The geographically remote region around Puerto Bolívar is very arid, with desert-like conditions and little or no water available for the port’s operations.

About The Author: 

Contributed by ITT - Water Equipment Technologies

Activation Date: 
October 7, 2004
Issue Reference: 
Legacy
Legacy ID: 
15502

Selecting a Pump for Seawater Reverse Osmosis

Although the pump is a relatively small part of the overall cost of an RO system, expenses resulting from downtime and inefficiency quickly can diminish the productivity of the system and your return on investment. Due to the corrosive atmosphere and high demands on these sea water RO systems, special attention is required in the pump selection process. There are several key factors that will help to ensure optimum pump and system performance.

Deck: 

Tech Update

About The Author: 

Darla Jean Thompson is the director of marketing and advertising at CAT PUMPS. CAT PUMPS is a manufacturer of high pressure reciprocating plunger pumps and pumping systems up to 320 gpm, 7,000 psi. For more information, call 763-780-5440; techsupport@catpumps.com; www.catpumps.com.

Activation Date: 
August 27, 2003
Files: 
Issue Reference: 
Legacy
Legacy ID: 
14383

Brominated Resins

In 1957 The Dow Chemical Corp. addressed the negatives of using bromine by creating a brominated ion exchange resin, which opened up the use of bromine in offshore water treatment applications.2 Today, polybromide resin is used in many offshore water treatment systems. The fact that bromine can be added to water that previously has been chlorinated makes polybromide resin a practical solution to accommodate the multiple sources of water in offshore applications.

Deck: 

Special Feature

About The Author: 

Ken Korslin, CWS-III, has served as a technical support specialist with the Plymouth Products division of Pentair Water Treatment for the past five years. Pentair Water Treatment's Plymouth Products division manufactures bromine feeders for marine applications under the Everpure Aviation and Marine brand.

Activation Date: 
June 27, 2003
Files: 
Issue Reference: 
Legacy
Legacy ID: 
14229

Taking the Salt Out

Five large municipal water agencies have combined to advocate a significantly increased federal role in encouraging desalination. The group sees desalination as a viable, cost-effective way of making seawater and brackish groundwater reliable sources to supplement national drinking water supplies.

Deck: 

Editorial

About The Author: 

Bill Swichtenberg is Editorial Director of WEM.

Activation Date: 
April 4, 2003
Files: 
Legacy
Legacy ID: 
13912

Desalination in America

On average there are 50 to 75 significant desalination projects per year in the United States with an average capacity of approximately 1 million gallons per day. The majority of these projects utilize membrane processes such as nanofiltration (NF) or reverse osmosis (RO).

Deck: 

Technology Update

About The Author: 

John B. Tonner is the vice president and senior consultant - BSME 1985 for Water Consultants International. He has more than 17years of water technology experience with particular emphasis on advanced water treatment analysis, desalination process, operational analysis and training. He may be reached at jtonner@WaterCI.com; www.WaterCI.com.

Activation Date: 
October 29, 2002
Files: 
Issue Reference: 
Legacy
Legacy ID: 
13402

Groundwater Crisis and Sustainable Agriculture in Northern China

Although China ranks sixth in the world in total water resources, there is a shortage. The average water resources per capita is 2,300 m3, making it only one fourth of the world average per capita, while the unit plantation area of water resources is only one half the world’s average value.

Deck: 

Groundwater resources throughout northern China are drying up at an astonishing rate.

About The Author: 

Zhang Guang-xin and Deng Wei are associate professors at Changchun Institute of Geography, the Chinese Academy of Sciences, Changchun, P.R. China.

Activation Date: 
April 2, 2002
Legacy
Legacy ID: 
13037