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

Desalination of Seawater and Brackish Water

The increasingly broad range of requirements for water quality has motivated the water treatment industry to refine existing techniques, combine methods and explore new water purification technologies including desalination.

About The Author: 

Wil Pergande is vice president of special projects for Osmonics, Inc., a manufacturer and worldwide marketer of high-technology water purification and fluid filtration, separation and handling equipment. He offers more than 30 years experience in management, sales and marketing in the water treatment industry. He may be reached at 612-933-2277.

Barry Abolmaali is the manager of applications engineering and customer service at Osmonics, Inc., Vista Operations. He has utilized his chemical engineering degree at Osmonics for eight years. He may be reached at 760-598-1800.

Activation Date: 
December 28, 2000
Issue Reference: 
Legacy
Legacy ID: 
11516

Ultraviolet Technology: The Non-Chemical Alternative for Well Water Disinfection

As consumer awareness grows in regard to the quality of water consumed every day from the numerous well water systems across America, the process that is gaining the most attention is that of disinfection.

About The Author: 

Scott Russell is the residential products manager at Ideal Horizons. He has more than six years experience in residential UV applications with a strong technical background in both electrical and mechanical issues. Russell can be reached at Ideal Horizons, 212 Ideal Way Poultney, VT 05764; 802-287-4485; fax 802-287-4486; www.idealhorizons.com.

Activation Date: 
December 28, 2000
Issue Reference: 
Legacy
Legacy ID: 
11490

Justifying the Value of an RO

There are solutions that work when a customer says "no" such as justifying the value and showing the customer he’ll be dollars ahead. What follows is a list of questions for the customer and then various scenerios that will refer you back to them.

Activation Date: 
December 28, 2000
Issue Reference: 
Legacy
Legacy ID: 
11478

RO Desalinators & PLCs Provide Fresh Water to Remote Areas

Reverse osmosis plants increasingly are being installed in outlying and remote areas. By providing water they can sustain life and/or provide irrigation to previously remote areas without readily available fresh water sources.

About The Author: 

Gregory Nadsady is a mechanical engineer who has been with Sea Recovery Corporation for two years. He holds a Bachelor’s degree in Mechanical Engineering from Loyola Marymount University and is working on a Master of Science degree in Systems Engineering and Mechanical Design.

Activation Date: 
December 28, 2000
Issue Reference: 
Legacy
Legacy ID: 
11365

UV Disinfection 101

An overview of UV disinfection and its applications.

About The Author: 

This article was written by Edwin L. Roberts, director of sales and marketing of Hydrotech Inc., Valencia, California, 661-294-8888.<

Activation Date: 
December 28, 2000
Legacy
Legacy ID: 
11350

Manufacturing With Membranes

The removal of impurities and contamination from water supplies or industrial chemicals is a process existing all over the world to varying degrees of sophistication. Filtration systems vary enormously according to location, the type of purification required and funding available.

Deck: 

An overview of various filtration methods and their applications

About The Author: 

This article was written by Steve Morris, business development manager with PCI Membrane Systems, a Thames Water Products Limited business, based in the United Kingdom. He may reached at +44 1256 896966.

Publication Date: 
December 28, 2000
Activation Date: 
December 28, 2000
Legacy
Legacy ID: 
11307

Membrane Filtration for Water and Wastewater

Membrane filtration, widely used in chemical and biotechnology processes, is already established as a valuable means of filtering and cleaning wastewater and industrial process water.

Activation Date: 
December 28, 2000
Issue Reference: 
Legacy
Legacy ID: 
11283