Ultraviolet System Design

In the last issue, we reviewed ultraviolet (UV) disinfection as a suitable technology for treating biologically unsafe water supplies. In this article, we will focus on system design and understanding the many available options for residential and commercial applications.

Deck: 

Understanding Residential and Commerical UV

About The Author: 

Adam Donnellan is vice president of sales for Sunlight Systems. He represents the third generation of his family to be involved with UV water disinfection. He can be reached at adam@sunlightsystems.com

Activation Date: 
May 10, 2001
Files: 
Issue Reference: 
Legacy
Legacy ID: 
12355

Desalination of Seawater Helps Meet Fresh Water Demand

Three French companies are meeting the water demands of large populations through the use of seawater desalination.Distillation and reverse osmosis are two competing techniques in the desalination of seawater. While each method has pros and cons, both provide a vital service in making seawater drinkable. Three French water companies (Saur, Degremont and Sidem) are working to improve the quality of fresh water created by both these methods and have invested heavily in the Mediterranean and Middle East markets with these technologies.

 

Las Palmas, Spain

Deck: 

Water Sources

About The Author: 

J.L. Martin-Lagardette is a free-lance environmental writer in Paris, France.

Publication Date: 
March 30, 2012
Activation Date: 
April 20, 2001
Legacy
Legacy ID: 
12334

Reverse Osmosis Membranes Help Conserve Water At the Sydney 2000 Olympic Games

During the 2000 Olympic Games, U.S. Filter Australia/Vivendi Water supplied a wastewater reclamation plant that recycled sewage and rainwater runoff at the games site. Part of the purification process involved the use of reverse osmosis (RO) technology.

About The Author: 

For further information from Dow Chemical Company, phone at 800-447-4369.

For further information regarding USFilter’s filtration/separations products, phone 805-393-7233.

Activation Date: 
March 22, 2001
Files: 
Legacy
Legacy ID: 
12249

Seawater Desalination With Reverse Osmosis

Desalination technology has brought fresh water and hence industrial and commercial development to areas of the world that otherwise might have remained unproductive. Not only has development been enhanced by this technology but, more importantly, the health and welfare of many people have been improved by the supply of sanitary fresh water supplies.

About The Author: 

Jorg Menningmann is president of Waterlink Pure Water Division.

Activation Date: 
March 14, 2001
Issue Reference: 
Legacy
Legacy ID: 
12207

Editorial: Home Buyer Awareness

I have started the new year on the right foot. I bought a house. I have spent many years day dreaming about my first home. The fireplace, staircase, patio, large kitchen, an office and my very own driveway ... which of course I will despise by the end of this harsh Chicago winter.

Deck: 

I have started the new year on the right foot. I bought a house. I have spent many years day dreaming about my first home.

About The Author: 

Wendi Hope King, Editor, www.waterinfocenter.com

Publication Date: 
January 1, 2001
Activation Date: 
January 1, 2001
Legacy
Legacy ID: 
11934

Nanofiltration Membranes

Nanofiltration is a liquid separation membrane technology positioned between reverse osmosis (RO) and ultrafiltration.

Deck: 

Water Needs, Unique Research Arrangement Lead to Membrane Development

About The Author: 

Harold Nicoll is senior marketing communications manager for The Dow Chemical Co.

Activation Date: 
January 1, 2001
Files: 
Legacy
Legacy ID: 
11938

In-Home Systems: Utilizing RO and NF Elements

Innovations in membrane technology, which has been used in major industries and hospitals, are driving the industry into the home.

Activation Date: 
December 28, 2000
Issue Reference: 
Legacy
Legacy ID: 
11862

Membrane Filtration As an Alternative: Part 2

Part one of this article appeared in the July issue and discussed microfiltration and utrafiltration. This article discusses nanofiltration and reverse osmosis.

About The Author: 

Dr. Mohamed Lahlou is the technical assistance specialist for the National Drinking Water Clearinghouse. This article originally appeared as a tech brief for the NDWC.

Activation Date: 
December 28, 2000
Legacy
Legacy ID: 
11813

Membrane Filtration as an Alternative: Part 1

Once considered a viable technology only for desalination, membrane processes are increasingly employed for removal of bacteria and other microorganisms, particulate material and natural organic material that can impart color, tastes and odors to the water.

About The Author: 

Dr. Mohamed Lahlou is the technical assistance specialist for the National Drinking Water Clearinghouse. This article originally appeared as a tech brief for the NDWC.

Activation Date: 
December 28, 2000
Legacy
Legacy ID: 
11775

The Challenge of Membrane Maintenance

The membrane processing technologies of microfiltration (MF), ultrafiltration (UF), nanofiltration (NF) and reverse osmosis (RO) are widely used to separate suspended and dissolved materials from water solutions in numerous industrial, medical and drinking water applications.

About The Author: 

Peter Cartwright is the owner of Cartwright Consulting Co., an engineering firm specializing in water and wastewater treatment technologies. He also is a partner in Cartwright, Olsen & Associates, a firm that provides consulting services to the Environmental Protection Agency and other agencies relating to drinking water treatment technologies. Cartwright has presented more than 100 papers, lectures worldwide and has written numerous articles and book chapters. He is the author of two patents and he wrote "Water Purification" in the May 1999, "Practical Guide to Water Treatment" issue of Ashrae Journal

Activation Date: 
December 28, 2000
Legacy
Legacy ID: 
11567