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

Project Compares Brackish Water Desalination Technologies – Part 2

Part one of this article appeared in the February issue and described how nanofiltration, reverse osmosis and electrodialysis reversal are being run side-by-side at the Brackish Water Demonstration Facility in California.

About The Author: 

Jim Passanisi is with the City of Port Hueneme, Calif., Janet Persechino is with Ionics, Inc., Watertown, Mass., and Todd K. Reynolds is with Kennedy/Jenks Consultants, San Francisco, Calif.

Activation Date: 
March 5, 2002
Legacy
Legacy ID: 
12989

Production of High Purity Water From Seawater

The Diablo Canyon Power Plant at Avila Beach in California utilizes seawater for both cooling water and makeup water for steam generation. Ionics, Inc., Watertown, Mass., designed and built and now operates a complete water treatment system serving the high-purity water needs of this power plant. Over the past eight years, the seawater treatment section has demonstrated excellent long-term performance as a result of strong design, consistent maintenance and qualified operators.

Activation Date: 
February 26, 2002
Issue Reference: 
Legacy
Legacy ID: 
12975

Project Compares Brackish Water Desalination Technologies - Part 1

In Port Hueneme, California, a state-of-the-art desalination facility uses three brackish water desalination technologies: reverse osmosis (RO), nanofiltration (NF) and electrodialysis reversal (EDR), operated side-by-side to produce over three million gallons per day (mgd) of high quality drinking water. The Brackish Water Reclamation Demonstration Facility (BWRDF) is the cornerstone of the Port Hueneme Water Agency’s (PHWA) Water Quality Improvement Program. In addition to providing desalted water for local use, the BWRDF also serves as a full-scale research and demonstration facility.

About The Author: 

Jim Passanisi is with the City of Port Hueneme, Calif., Janet Persechino is with Ionics, Inc., Watertown, Mass., and Todd K. Reynolds, is with Kennedy/Jenks Consultants.

Activation Date: 
February 4, 2002
Legacy
Legacy ID: 
12913

Protecting Precious Water Sources

After a hurricane in the 1960s caused salt water from the Atlantic Ocean to seep into private wells-effectively destroying the drinking water-Kill Devil Hills in Dare County, N.C., took action. Today, four water treatment facilities provide safe, clean and healthy fresh water for residents and tourists.


Two technologies currently are used by Dare County for the treatment of water. The first is a conventional ion exchange method that softens well water. The second is a reverse osmosis (RO) procedure that desalts brackish groundwater from wells drilled down 300 to 400 feet.

Deck: 

Products at Work

Activation Date: 
December 27, 2001
Legacy
Legacy ID: 
12844