Award-Winning Plant Meets Growing Needs   Water & Wastes Digest April 2008   By Stratton Tragellis
A design-build-finance concept through one provider worked well for this Colorado plant
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Turning to Filtration   Water & Wastes Digest December 2007   ITT/F.B. Leopold Co.
A deep-bed biofiltration system maintains nitrate/nitrogen compliance despite rapid service expansion
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Exploiting Surface Water Resources   Water & Wastes Digest November 2007   By Evelyn M. Scibelli
Membrane ultrafiltration technology helps a Texas town get more from its unique aquifer

Bromley on Membranes: Assessing Membrane Technology   Water & Wastes Digest November 2007   By David Bromley
A close look at the problem of membrane fouling

Retro Fit a Hit   Water & Wastes Digest October 2007   By Hui Lin, P.E.
The sand filter basins at an Illinois treatment plant gained capacity from a cloth media filter retrofit

Going Multi-Barrier   Water & Wastes Digest October 2007   By Daniel L. Willers, P.E.
Combining two-stage clarification, media filtration and UV disinfection to improve treatment plant performance

Recycling & Reusing   Water & Wastes Digest September 2007   By Paul Schuler
The U.S. Army and Aqua Engineers team up to establish an award-winning wastewater reuse system on a Hawaiian Army base
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Implementing Pressure & Submerged Membrane Filtration   Membrane Technology November 2006   Lisa Sorgini
Plant expansion doubles treatment capacity in half the footprint

South Bend Addresses Iron & Manganese   Water & Wastes Digest October 2006   By Leo Zappa
Indiana company discovers a new way to remove iron & manganese from drinking water

Diamond in the Rough   Water & Wastes Digest October 2006   By Keith Dayton
Cloth media filter retrofit solves hydraulic loading problem

How Long Can You Go?   Water & Wastes Digest October 2006   By Mario Benisch, Dave Clark, April Z. Gu & JB Neethling
Recently, there has been increasing demand to achieve very low effluent total phosphorus (TP) due to more stringent discharge limits imposed on wastewater treatment plants.

Laser Nephelometers Provide Ultra-Sensitive Membrane Performance Monitoring   Water & Wastes Digest September 2006   By Michael Sadar
Ultra-low turbidity detection helps water district protect public health, meet regulatory requirements

Using Technology to Address Odors   Water & Wastes Digest August 2006   By Rick Parker
Biotrickling filter handles tough municipal odor control problems

Targeting Iron & Manganese in Drinking Water   Water & Wastes Digest April 2006   By Andrew McClure
Synthetic alternative to greensand combines oxidation with filtration to remove unwanted contaminants more effectively

Trends in Drinking Water Treatment   Water & Wastes Digest November 2005   By Philip J. Brandhuber, Ph.D.
Needs spur the development of new water treatment technologies that may be more effective, less costly

Do Membranes Fit Your Needs   Water & Wastes Digest November 2005   Karen DeCampli

The Key to Future Wastewater Treatment   Membrane Technology November 2005   By Dr. Klaus Vossenkaul

Membranes Offer Water Plant Flexibility   Membrane Technology November 2005   Lisa Sorgini

Advantages of Pressure MF Systems Over Vacuum Systems   Membrane Technology November 2005
Today, the value of the U.S. membrane market is more than $2 billion & growing at a rate of 8% per year.

Standing Up to a Stern Test   Water & Wastes Digest October 2005   Nadia Abbott

Adapting to Arsenic Rules   Water & Wastes Digest August 2005   By Wendy L. Chambers and Roman J. Aguirre
The proposal consisted of supplying more than 300 tons of GFH adsorption media and 35 large diameter pressure vessels, including instrumentation and controls as well as backwash storage tanks.

Reservoir Tank Is One of A Kind   Water & Wastes Digest May 2005   By Judy Horning
This expansion project is part of a long-term citywide capital improvement program to improve the infrastructure and services that provide San Diegans with safe drinking water.

Time Saved Testing Pays Off   Water & Wastes Digest May 2005   By Adam Potter
Many wastewater plants are switching from fecal coliforms to monitoring for E. coli and Enterococcus, because the EPA has identified these bacteria as the best indicators of fecal contamination in water.

Filtration   Water Quality Products March 2005
Scale… it is a vicious never-ending problem that can kill the overall efficiency of water-cooling systems or towers. It can also clog sand-type filtering systems and turn the sand to cement, eventually shutting it down altogether.
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Sand Plays Prominent Role at Canadian Ski Lodge   Water & Wastes Digest March 2005   By Dennis Hallahan, P.E.
These traditional technologies, often upgraded with new design and technology, provide quality treatment and disposal without the capital cost of sewering and centralized treatment plants.

Using Baseline Monitoring Techniques to Assess Filter Run Performance   WWDmag.com January-December 2005   Michael J. Sadar and Kathleen Bill
Determining if a filter run is approaching a breakthrough condition is a daily challenge for water treatment plant (WTP) operators. Current techniques look for upward trends in either turbidity or particle counts of the filter effluent. However, this does not consistently predict actual filter breakthrough. This study’s objective is to determine if data from different particle detection technologies can be better utilized to characterize filter performance.
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The Application of Simplified Process Statistical Variance Techniques to Enhance the Detection of Filtration Integrity Loss   WWDmag.com January-December 2005   Mike Sadar
Process monitoring for loss of filtration integrity is often performed using basic light scatter detection methods such as turbidity and particle counting. These methods monitor for the presence of particles in the filtration effluent (permeate). The industries where these parameters are most widely used include drinking water and ultra-pure water production. The recent upward trend in the application of membrane systems for drinking water production enhances the need for technologies with higher sensitivity and greater reliability because the loss of filtration integrity could directly impact human health.
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A Strategy for Optimizing Water Treatment Plant Performance Using Light Scatter Technologies   WWDmag.com January-December 2005   Mike Sadar
This study hypothesizes that filter backwash cycles that are consistently monitored to a set turbidity value will correlate to a high performance filter run. If this is indeed true, the process will save the plant time and money. The costs and benefits of using laser nephelometers will be summarized in this study.
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Tapping into the Ocean   Water & Wastes Digest January 2005   By Nikolay Voutchkov
The mineral/salt content of the water is usually measured by the water quality parameter total dissolved solids (TDS), in milligrams per liter (mg/L) or parts per thousand (ppt).

Filtration In Water and Wastewater Analysis   Water Quality Products December 2004   L.P. Raman
As simple as it looks, the filtration media and how it works is more complex that what meets the eye.
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A Permanent Element   Water & Wastes Digest November 2004   A. R. Rubin
Reuse has been a common practice for generations. Only recently has it received the attention necessary to sustain it as an element of the onsite and decentralized wastewater industry

RO Can Make Sense   Water & Wastes Digest November 2004   By Michael Norton, Birol Shaha and Dr. YuJung Chang
Pristine water is being used to irrigate golf courses. One choice may be to learn to use reclaimed water to do this job.

Water Treatment Desalination Systems Improve Efficiency and Maintenance Costs   Water Quality Products October 2004
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.

The First Seven Years of Operation at an Ultrafiltration Plant   Water & Wastes Digest October 2004   By James J. Vecchio and Antonia von Gottberg
Many membrane filtration plants for municipal applications have been installed over the last few years, but few plants have been in operation for seven years, and even fewer use the original membranes

Keeping Up With the Times   Water & Wastes Digest October 2004   By Tim Gregorski
WWD examines some of North America’s the latest municipal upgrades.

Wastewater Treatment for Unserviced Land Development   Water & Wastes Digest October 2004   By James Hotchkies
Residential, industrial, or recreational construction on non-sewered land frequently raises many questions about the most reliable and cost-effective strategy for managing the future wastewater stream.

After All These Years   Water & Wastes Digest October 2004   By Ron Singleton
The Water District researched the many choices of filtration technologies available and eventually sent requests for proposals to six different manufacturers.

A Combination Deal   Water & Wastes Digest October 2004
Fountain Hills combines cloth media filtration and membrane system to get quality effluent

The Technology of Choice   Water & Wastes Digest October 2004   By Tim Gregorski
Membrane-related technology can offer near-complete treatment to a variety of water applications.

The Evolution of Low-Pressure, Immersed Membrane Technology   Membrane Technology October 2004   by T. David Chinn, P.E.
Today, after nearly 25 years of championing the innovation and evolution of low-pressure, immersed membrane technology, ZENON continues to be a leader in this rapidly growing and dynamic market.

Addressing Membrane FAQs   Membrane Technology October 2004   by Karen Decampli
With this growth and discovery stems questions about specific uses and maintenance.

Membranes Meet Total Water Treatment Needs for Growing City   Membrane Technology October 2004   by Tom Foley
After more than two decades of outsourcing its wastewater treatment, city officials in American Canyon began to consider constructing plant of their own.

Science Applied to Optimize Membrane Treatment   Membrane Technology October 2004   by Paul Dittman
CWS hired Black & Veatch (B&V) to evaluate a treatment system to process 20 MGD of water from the Kern River for the city of Bakersfield. B&V selected a treatment system that uses coagulation and sedimentation with ferric chloride as coagulant.

UF Pretreatment for RO Systems   Membrane Technology October 2004   By John McArdle, Antonia von Gottberg, Ben Antrim and Dawn Halpern
Because of the increasing awareness of the need for adequate pretreatment, there has been significant interest in UF as pretreatment for RO for municipal applications in brackish and seawater desalination plants.

Membranes Offer Flexible & Economical Water Treatment Options   Membrane Technology October 2004   by Stratton Tragellis and Ed Jordan
Innovative and highly adaptable membrane technologies are discussed in the following case studies

Mishawaka Utilities Serves Up High-Quality Water   Water & Wastes Digest September 2004   By Wayne King
Two-phase water system expansion in Indiana depends on technological advancements

Providing a One-Two Punch   Water & Wastes Digest September 2004   Lianna Mah
The Oakville plant treats 109 million liters per day of water from Lake Ontario.

New Desalination Method Reduces Energy Costs   Water & Wastes Digest August 2004   By Denise Covelli
The Long Beach Seawater Desalination Research and Development Facility will be the nation’s largest, using dual-stage nanofiltration technology up to 30% more energy efficient than conventional methods

Tampa Bay Water’s Desalination Plant to Run Less Often, Undergo Repairs   Water & Wastes Digest August 2004   By Denise Covelli
A critical 14-day performance test done in May 2003 uncovered 31 deficiencies in the plant.

DCWW Power, Politics and Paradigm   Water & Wastes Digest August 2004   By Craig Lindell
However, its real capacity (decentralized wastewater treatment) to address budget challenges, nonpoint pollution and the watershed agenda remains unrealized.

Deconstructing Onsite Wastewater Treatment   Water & Wastes Digest August 2004   A. R. Rubin
Throughout the country, onsite wastewater management systems commonly are used in rural and urban fringe areas.

Membrane Filtration Aids Spring Water Clean-up   Water & Wastes Digest May 2004
“It was cost-effective, modular to fit our limited area, had a quiet backwash and filtered prechlorinated water.”

Double Dewatering   Water & Wastes Digest February 2004
Completion of this project will make the Broward County facility one of the five largest belt filter press dewatering facilities in the U.S.

Filter Provides Legionella Barrier for Hospitals   Water Quality Products November 2003
Point-of-use units are increasingly gaining acceptance in such applications as hospitals and nursing homes. This technology allows these facilities to produce high-quality water as needed at a lower cost.
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Activated Carbon for Bromate Reduction   Water Quality Products November 2003   Kimberly D. Thompson and Neal E. Megonnell
Various authors have studied the use of activated carbon and for the most part have concluded activated carbon is not a cost-effective solution. However, these authors have failed to realize the limitations of carbon validation methods or the fact that not all carbons are alike, especially when chemical reactions control the process.
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Finding a Sweet Result   Water & Wastes Digest October 2003   David Pearson
A new membrane filtration system manufactured by PCI Membrane Systems, Inc. allowed National Raisin Co. of Fowler, Calif., to not only cut their wastewater costs, but they have also opened up a potentially lucrative source of income.

Old School No Longer   Water & Wastes Digest October 2003   Thomas C. Schwartz
When the country's olde