Comparing RO Filter Quality and Performance

Consumers who choose to use a residential point-of-use (POU) reverse osmosis (RO) system in their home need to feel secure that their system is producing high quality, reliable water for their family. Because most of us lack sophisticated equipment at home to make this determination, many homeowners rely on trusted brands to deliver the water quality they expect.

Deck: 

Quality tests and certifications ensure reliable filter performance

About The Author: 

Diego Bonta is an applications development specialist for Dow Water & Process Solutions and a member of the WQP Editorial Advisory Board. Bonta can be reached at dbonta@dow.com.

Publication Date: 
July 13, 2011
Activation Date: 
July 13, 2011
Company Reference: 
Issue Reference: 
Legacy
Legacy ID: 
22899

Preventing Short-Life Field Failures

Previous articles in this series explained principles of how reverse osmosis (RO) systems work and the main factors and components that impact their performance. Once a point-of-use (POU) RO system is operating in the field, there are several troubleshooting tips that can prevent failures due to shortened lifetimes. These failures are usually caused by scaling, biofouling or particles. This article will cover techniques and tools that are used to troubleshoot these failures.

Sights, Smells and Sound

Deck: 

Avoid fouling to keep RO systems running smoothly

About The Author: 

Diego Bonta is an applications development specialist for Dow Water & Process Solutions and is a member of the WQP Editorial Advisory Board. Bonta can be reached at dbonta@dow.com.
Denise Haukkala is part of the Technical Services team for Dow Water and Process Solutions. Haukkala can be reached at drhaukkala@dow.com.

Publication Date: 
May 31, 2011
Activation Date: 
May 31, 2011
Company Reference: 
Issue Reference: 
Legacy
Legacy ID: 
22809

Field Guide for Point-of-Use RO Systems

There are several factors that impact the performance of a residential point-of-use (POU) reverse osmosis (RO) system. The previous article in this series (“Factors that Impact RO Filter Performance,” March 2010) highlighted how changes in the feedwater quality can impact the quality of the permeate water. This article focuses on how changes in the components used in a residential POU RO system impact the permeate water.

Deck: 

Impact on permeate water from changes in residential POU RO system components

About The Author: 

Diego Bonta is an applications development specialist for Dow Water & Process Solutions and a member of the WQP Editorial Advisory Board. Bonta can be reached at dbonta@dow.com.

Denise Haukkala is part of the Technical Services team for Dow Water and Process Solutions. Haukkala can be reached at drhaukkala@dow.com

Rick Andrew is the operations manager of the NSF Drinking Water Treatment Units Program for certification of POE and POU systems and components. His contributions to this article include information regarding NSF/ANSI 58 requirements. Andrew can be reached at andrew@nsf.org or 800.NSF.MARK.

Publication Date: 
April 29, 2011
Activation Date: 
April 29, 2011
Company Reference: 
Issue Reference: 
Legacy
Legacy ID: 
22716

RO Systems

Company Reference: 
Spotlight Name Archive: 
General
Legacy ID: 
58457
Spotlight Header Archive: 
April 2010

Green by Design RO systems reduce wastewater and operating costs. The R-1500 produces 1,500 gpd with only 375 gpd to the drain. The system has a compact frame, 16 in. wide by 16 in. deep and 30 in. in height, and is equipped with an SS membrane vessel, TDS monitor, blending and recirculation valves.

Image: 

Movin’ On Up

New England’s tallest building turns to central RO system

About The Author: 

Elizabeth Lisican is associate editor of Water Quality Products. Lisican can be reached at 847.954.7958 or by e-mail at elisican@sgcmail.com.

Activation Date: 
February 8, 2010
Files: 
Issue Reference: 
Legacy
Legacy ID: 
21456

Pretreatment for Portable Purification

U.S. Army deploys a new generation of water purification technology

About The Author: 

John McArdle is director of business development for Koch Membrane Systems. McArdle can be reached by e-mail at info@kochmembrane.com.

Activation Date: 
October 28, 2009
Issue Reference: 
Legacy
Legacy ID: 
21209

RO System

Company Reference: 
Spotlight Name Archive: 
New Product Showcase
Legacy ID: 
57491
Spotlight Header Archive: 
September 2009

The H-Series RO system produces 700 to 1,500 gal per day in a compact footprint: 19 in. in height by 28 in. in width and 11 in. deep. The stainless steel systems are designed for restaurants, beverage kiosks and misting systems. Product water TDS can be adjusted for high purity or high recovery with recirculation and blending valves.

Image: 

Vessels

Company Reference: 
Spotlight Name Archive: 
General
Legacy ID: 
57510
Spotlight Header Archive: 
September 2009

The 2500/4000 Series stainless steel membrane pressure vessels are precision manufactured, using high-grade materials, for connection to standard RO membrane elements and are available in 304 and 316 stainless steel. They are constructed from 2-mm-thick stainless steel and use glass-fiber reinforced polyamide end caps. Vessels are fitted with EPDM U-packing sealers to provide superior leak proofing.

RO Systems

Company Reference: 
Spotlight Name Archive: 
New Product Showcase
Legacy ID: 
57036
Spotlight Header Archive: 
June 2009

New Titan commercial reverse osmosis (RO) systems have an expandable, space-saving wall-mount design ranging in size from 250 to 4,000 gal per day. The RO systems come standard with low-energy, high-rejection membranes, aluminum powder-coated frames and utilize other high-grade components.

Image: 

Under the Sea

RO system effectively maintains Atlanta’s massive aquarium

About The Author: 

Trude Witham is senior technical writer for Siemens Water Technologies. Witham can be reached at 978.614.7198 or by e-mail at trude.witham@siemens.com.

Activation Date: 
January 28, 2009
Files: 
Issue Reference: 
Legacy
Legacy ID: 
20080