In the Field: Stormwater Treatment at a New Continental Airport Terminal   Water Engineering & Management March 2003
Airports potentially can generate enormous amounts of polluted stormwater runoff. In addition to hydrocarbons such as oil and fuel from cars, trucks and planes, winter weather brings added sand and salt to the roadways. Expanding the terminal area for Continental's new Global Gateway at Newark Liberty International Airport in late 2001 included increasing the paved areas around the terminal to accommodate the new taxiways and roadways. The system demonstrates the effectiveness of applying stormwater treatment technology to an already congested area where competition for space is fierce.

Municipalities Tap into Benefits of EDR Water Treatment   Water Engineering & Management February 2003
No one wants to drink radium, nitrates or arsenic. However, if not for some technologically advanced methods of removing these contaminants, we all might be sipping on some very unhealthy water.
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Plant Combines Wastewater Treatment and Energy Conservation   Water Engineering & Management October 2002   Robert T. McMillon and D.J. "Jody" Zabolio, III, P.E.
There are not many wastewater treatment plants that can look at naturally occurring organic waste and see a renewable source of energy. However, the Village Creek Wastewater Treatment Plant in Fort Worth, Texas, has done exactly that for the last 40 years. This last year, steps were taken that could make Village Creek a net energy producer instead of an energy consumer.
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The Standard Septic System: Still an Effective Choice for Onsite Wastewater Treatment   Water Engineering & Management October 2002   Dennis F. Hallahan P.E.
In 1997, EPA and Congress officially recognized onsite wastewater treatment systems (commonly referred to as septic systems) as a viable, long-term solution for treating wastewater. This was an important designation since nearly 40 percent of new homes in the United States use this type of system to treat household wastewater.
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Back to the Basics, Part 2   Water Quality Products June 2002   Jeff Roseman, CWS-1, Aqua Ion Plus+ Technologies
How does everyone achieve effluent water that meets their needs and demands? Each situation is different, but a simplistic explanation of various technologies will be discussed in this article. Each of the following categories has had much written about them, but this article will be an overview of several methods in order to help you educate the general public so they can make an intelligent decision, purchase something of value and continually seek professional consultation.
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Sulphur Water Solution   Water Quality Products June 2002   Goulds Pumps
For more than 220 years people have journeyed to White Sulphur Springs, W. Va., to indulge themselves in baths of mineral water flowing from mountain springs. As inviting as the sulphur water may be, it is equally harsh on the pipes and pumps that transport it. Eight years ago Greenbrier decided to stop the corrosion once and for all by installing an all-stainless model manufactured by Goulds Pumps.
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Selecting the Right Water Meter   Water Quality Products June 2002   Jack C. Haley, ABB Water Meters, Inc.
Water meters have for many years made the public more aware of consumption. Now, with all the new water quality products that are becoming available, water metering is more meaningful every day
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Threat of Water Supply Bioterrorism: Who Will It Impact?   Water & Wastes Digest December 2001   Nikolai Pitchforth, Research Analyst, Environmental Group, U.S.
The tragic events of September 11th highlighted America’s vulnerability to terrorism and spurred an unprecedented domestic security response. Water treatment facilities were identified almost immediately as a potential target for further attacks and were urged by the FBI to implement security measures, most of which are still in place.

Filters Help Preserve 17th Century Shipwreck   Water & Wastes Digest December 2001
To most people, water clarity is important, but the nautical archaeologists at Texas A&M University know that to rebuild a 300-year-old ship, it is essential. They needed filtration equipment that was up to the task.

Editorial Emphasis   Water & Wastes Digest November 2001
Oxygen-fed Ozone Generation Offers Advantages Over Ambient Air

Products In Action   Water & Wastes Digest November 2001
Microfiltration, Nanofiltration Help Meet EPA Standards at Lake Mead

High-Tech Products: Instrumentation   Water & Wastes Digest October 2001
Sensors and Analyzers Prove Instrumental in Preserving Civil War Sub: Recovered Submarine Requires Chloride Removal to Prevent Rust and Corrosion

Treatment Plant Cuts Hydrogen Sulfide Odor With Sodium Nitrite/Nitrate Blend   Water & Wastes Digest October 2001
The Johnstown, Penn., Wastewater Treatment Plant has found a simple and relatively inexpensive chemical solution to a chronic hydrogen sulfide odor problem.

Controlling Nitrification in a Water Distribution System Using Sodium Chlorite   Water Engineering & Management September 2001   Thomas L. O’Connor, Bart Murphy and Dr. John T. O’Connor, P.E.
Engineers set out to discover whether the direct addition of sodium chlorite to a water stream might be an effective nitrification control process.
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Onsite Wastewater Treatment: A Technological and Management Revolution (Part 1)   Water Engineering & Management September 2001   Stephen P. Dix, P.E.
Significant developments in onsite water treatment has everyone in the industry working to keep up with the latest advances in septic system design, product innovations and management strategies.
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Carbon Block Manufacturing   Water Quality Products June 2001   Michael D, Steinhardt, US Filter
Carbon block is used in a wide variety of applications and performs a wider range of filtration tasks than other products. How carbon block is engineered will determine its use.
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Continuous Microfiltration System Ensures Safe Drinking Water For Wisconsin Residents   Water & Wastes Digest May 2001
The Kenosha Water Utility treatment facility, located on the shores of Lake Michigan in Wisconsin, needed to upgrade its two plants to meet the expanding water needs of the community it services. Continuous microfiltration helped meet those needs.
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Flexible Monitoring System Helps Ohio Company Meet Daily EPA Measurement Requirements   Water & Wastes Digest May 2001
An Ohio utility company provides water plant operator services to facilities throughout the state, including several very large travel center operations. Daily monitoring became time consuming and costly, so they sought a more efficient solution by investigating plant monitoring systems.
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Bioaugmentation Solves Capacity, Efficiency and Compliance Issues   Water Engineering & Management April 2001
Weary of draining their budgets on increasing capacity or purchasing additional equipment and new chemical treatments, wastewater facility managers are turning to bioaugmentation.

Self-performed Dewatering Enhances California Sewer Line Project   Water & Wastes Digest April 2001
After years of relying on specialty subcontractors to dewater their deep ditch projects, Jaeger Construction, Inc. self-performed the work on the North Davis Sanitary Sewer Trunkline Project for the city of Salinas, California.
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New Cartridge-type D.O. Sensor Saves Time, Money   Water & Wastes Digest April 2001   By Jim Klauer
To address the inherent measurement problems of electrode contamination, electrolyte depletion, and membrane coating, GLI International, Inc. has introduced a dissolved oxygen sensor featuring a replaceable membrane cartridge.
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Fuel Cell Uses Methane to Power Plant   Water Engineering & Management March 2001
The City of Portland, Ore., has installed a 200-kilowatt fuel cell in its wastewater treatment plant that uses methane produced by the plant to generate power to run the plant, thus reducing the purchase of electricity from power stations.

Effluent Diffusers Improve Water Quality, Meet Regulations   Water & Wastes Digest March 2001   WWD Staff
In order to obtain a better permit, a Midwest plant needed to significantly reduce the pollutant concentrations being produced by its current level of discharge. Working with a consultant, management decided an effluent diffuser would be a more reliable and cost-effective option than altering the treatment process or installing a second outfall line.
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Unique Dewatering Method Minimizes Handling   Water & Wastes Digest February 2001   Edited by WWD staff
Throughout the 70s and 80s, a dramatic evolution took place in the area of environmental regulations. In the midst of these rapidly changing government mandates, numerous technological advancements were made, as business and industry raced to keep in compliance. One such technology was "dewatering."
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Municipal Plant Upgrades Wastewater Treatment With New Magnetic Flowmeters   Water & Wastes Digest February 2001
Wisconsin's Madison Metropolitan Sewerage District needed to replace its aging electromagnetic flowmeters at 32 points in its Nine Springs Wastewater Treatment Plant. After carefully weighing its options, the district decided to purchase UniMag magmeters from Isco, Inc.
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Innovative Odor Control -- A Good Neighbor Program   Water & Wastes Digest February 2001
The Water and Wastewater Utility Department of the city of Austin, Texas, manages the operation of a regional sludge processing facility where they faced an odor problem. Working with a consultant, they purchased a fixed bed, iron oxide based odor control system from The SulfaTreat Company.
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Packed-Bed Ion Exchange Trains Create Water Treatment Efficiency   Water Engineering & Management February 2001
Packed-bed ion exchange trains in a new demineralized (DI) water treatment system at the OxyVinyls, LP-managed multi-plant site in Pasadena, Texas, have keyed a dramatic gain in treatment efficiency for both boiler feed and process water.

Basic Essentials   Water Quality Products January 2001   Adam Donnellan, Sunlight Systems
The benefits of ultraviolet (UV) light in destroying waterborne diseases are well established. This article (part one in a continuing series) will focus on explaining the basic terminology associated with the technology.
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Concrete Reclaim System Efficiently Recycles Slurry Water In California   Water & Wastes Digest January 2001
Harbor Ready Mix has brought into operation a prototype concrete reclamation system that not only recycles the sand and gravel from returned concrete but also the cementious solids and water. The operational merits of the system are applicable to all batch plants that need a cost-effective method to recycle returned concrete without prohibitive investment in new infrastructure.
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Choosing the Right Disinfection Technology for a Municipal Drinking Water Plant - Part 2   Water Engineering & Management January 2001   Dr. Hubert Fleming and Wayne Huebner
These profiles of various disinfection processes can help managers decide which process is best suited for their treatment plant.
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Manganese & Iron   Water Quality Products December 2000   Glenn Gruett
While the recipe for treating problem water can be a quick fix at times, it also can require trial and error on the part of a water specialist who may need to find the ideal combination of treatments to fix the problem.

Ultrafiltration   Water Quality Products December 2000   Mike Sadar
Ultrafiltration (UF) rapidly is becoming a common and practical method of preparing pure water that is free of particulate matter.
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An Overview of Ozone in Water, Wastewater Treatment   Water & Wastes Digest November 2000
There are more than 2,000 installations worldwide that use ozone to treat drinking water. Ozone is an effective disinfectant for treating municipal and industrial wastewater, enabling the end user to meet EPA pre-treatment standards.

Toledo Water Treatment Plant Switches to PC-based SCADA   Water & Wastes Digest November 2000
The Collins Park Water Treatment Facility at Toledo, Ohio, recently replaced its obsolete operator interface system with Windows NT-based OpenEnterprise software.

Tablet Chlorination System Provides Affordable Alternative to Liquid, Gas   Water & Wastes Digest November 2000

Water Reuse for Drought-proof Industrial Water Supply in San Diego   Water & Wastes Digest November 2000
A 200,000 gallon per day (gpd) advanced microfiltration system treats secondary wastewater effluent for reuse as process water for Toppan Electronics, Inc. in San Diego, Calif.

Innovative Virginia WWTP Tries Cost-Effective Phased Isolation Ditches   Water Engineering & Management November 2000   Renee Winfree and Ronnie Tatum
One plant installed a continuous sequencing batch reactor to significantly increase plant efficiency while meeting regulatory limits.

Choosing the Right Disinfection Technology for a Municipal Drinking Water Plant - Part 1   Water Engineering & Management November 2000   Dr. Hubert Fleming and Wayne Huebner
Managers of water treatment plants must be able to choose the right disinfection system to bring their plants into compliance with government regulations.

Sanitary District Rises to the Challenge   Water Engineering & Management October 2000
To keep up with expanding community, one district was forced to more than double its wastewater treatment capacity.

Lime Slurry Make-up Process Modeling Techniques   Water Engineering & Management September 2000   Steve Chen
A modeling technique can help simulate the make-up process, predict the boundary of inconsistent lime concentration and minimize the inconsistency.

Isopolyester Cover-Up Helps Keep Wastewater Plant Running   Water Engineering & Management September 2000
A Southern California treatment works needed to cover the influent of 40 million tons of sewage per day.

Balancing Act: Small Community Water Supplier Mulls Affordable Corrosion Control with Pleasing Aesthetics   Water Engineering & Management September 2000   Robert A. Leitch, P.E.
Elevated levels of iron and manganese were giving one community trouble, but a water softening system was able to alleviate these problems.

Breathing New Life Into a Legacy SCADA System   Water Engineering & Management August 2000
When the Town of Derry in New Hampshire set out to upgrade its Supervisory Control and Data Acquisition (SCADA) system in the fall of 1999, it faced the challenge of adapting the new system to its existing remote telemetry units (RTUs).

City of Hollywood Revises Industrial Pretreatment   Water Engineering & Management July 2000   Frederick Bloetscher, P.E., Lisa Meday-Futo, Whitifeld R. Van Cott and Robert Fergan, P.E.
The City of Hollywood (Fla.) is located in southeast Broward County, with a land area of approximately 29 square miles. However, the City is a regional wastewater service provider to areas outside the City that are termed "Large Users."

Accurate Polymer Feed System Reduces Time and Cost for Sludge Dewatering   Water Engineering & Management June 2000   Tom Kruzick
High performance dry polymer mixing and feed have boosted the efficiency of a new anaerobic digestion system at the 20 mgd Oshkosh, Wis., wastewater treatment plant.

New Arsenic Treatment Technology Tested in India   Water & Wastes Digest May 2000
A new low cost technology for purifying arsenic contaminated groundwater assists the government of India in removing this slow but steady assassin from their midst.

Food Processor Reaps Benefits from Change to Dissolved Air Flotation Clarification   Water Engineering & Management April 2000
Regulatory compliance management at Marburger Foods, Inc., has taken advantage of dissolved air flotation (DAF) clarification technology in its wastewater pretreatment system for its pre-cooked bacon processing operation.

Aeration Technology Adds Productivity, Saves Money During Contamination Clean-Up   Water Engineering & Management April 2000
Density-Driven Convection (DDC), developed by Wasatch Environmental, Inc., is a high-efficiency in-situ aeration technology that can save 50 percent or more of the cost of some groundwater treatment techniques and rid sites of contaminants in considerably less time, according to Wasatch President Les Pennington.

Facility Combines Two Technologies, Increases Water Quality   Water Engineering & Management March 2000

One Flew over the Chicken Coup: Back-Up Plan Adds Value to Facility Delivery   Water Engineering & Management February 2000   Joe Christie

Electrocoagulation Technology Keeps Site In Operation, Meets Regulatory Requirements   Water & Wastes Digest February 2000   Louis H. Knieper
An oily water treatment facility on the Sabine River near Port Arthur, Texas, was not in compliance and had a large inventory of wastewater on site.

New Software Improves Process In Detroit Plant   Water & Wastes Digest January 2000

Cooperation, Communication and Teamwork Are Key to Project's Success   Water Engineering & Management January 2000   Rebecca Zimoch
The system had been built in the 1960s and was showing its age. Replacement parts were difficult to find and the plant suffered from increasingly frequent breakdowns. The outdated plant did not even meet state water quality regulations.

Aerators Stop Odors in Chicago   Water Engineering & Management January 2000
Chicago and its surrounding 51 communities cover an area of 375 square miles and have a population of over 3,000,000 people. This metropolis is served by a combined sewer network carrying both raw sewage and stormwater in a single pipe.

A New Look at Disinfection By-Products in Drinking Water   Water Engineering & Management January 2000   Taha F. Marhaba, Ph.D., P.E.

Two New Aquatic Attractions Use Ozone Treatment For Disinfection, Color Removal   Water & Wastes Digest November 1999
Ozone is rapidly emerging as the most efficient and ecologically sound oxidant to treat both organic and inorganic substances. A fast-acting and effective treatment technology, ozone is now used in a variety of water treatment applications.

Chicago Treatment Facilities Utilize Latest TechnologyIn Monitoring, Data Acquisition   Water & Wastes Digest October 1999
Chicago is home to the two largest water treatment plants in the world. The rigorous process followed must meet both U.S. Environmental Protection Agency and Illinois Pollution Control Board standards.

Fiberglass Grating Used in Kansas City Treatment Plant   Water & Wastes Digest August 1999
Over the past decade, the use of fiberglass structural products in the wastewater treatment industry has grown dramatically.

Traveling Bridge Filter Problems Eliminated   Water & Wastes Digest March 1999
Bethel Park, Pennsylvania installed two 4MGD traveling bridge filters in 1980. According to Joe Witkowski, who manages the facility, "We had serious media leakage with our old filters. We had continuous backwashing and mechanical problems - they just couldn't handle high flows. Plus, they had serious media leakage problems."

Treating Odors and Impurities   Water Engineering & Management March 1999   Ben Vaupel
Any approach used to eliminate odors and impurities must emphasize a total system solution, so care must be given to the type of process used to remove contaminants.

Filtration Process Restores Murky Pools   Water Engineering & Management March 1999   Jim Jebbia and David Simon
One Hawaiian hotel was able to quickly fix a filter problem that was turning its tropical ponds into a milky and murky mess.

Strategies for Minimizing Ozonation By-Products in Drinking Water   Water Engineering & Management February 1999   Thomas Grosvenor
This paper summarizes ozonation and by-product formation chemistry as well as ways to control by-product formation.

State of Michigan Acquires Energy-Efficient Regenerative Thermal Oxidation Equipment   Water Engineering & Management December 1998

Underdrain Plate for Potable Water Filtering Provides for Retention of Media   Water Engineering & Management November 1998

Automated Chlor/Dechlor Control Protects Fishery, Reduces Chemical and Labor Costs   Water Engineering & Management November 1998   Doug Marks
One water reclamation plant used a high resolution redox cotroller to reduce potential harm to a nearby creek.

Odor Controlled in Wastewater Treatment Facility   Water Engineering & Management October 1998

Nuisance Odors Controlled in Power Plant Process Water Ponds   Water Engineering & Management October 1998

Shoring Up Future Water Supplies with RO Sea Water Plants   Water Engineering & Management October 1998   Alan Smith
As competition for limited water supplies increases, sea water treated by reverse osmosis will become more viable.

The Onsite Revolution: New Technology, Better Solutions   Water Engineering & Management October 1998   Stephen P. Dix, P.E., and Valerie I. Nelson, Ph.D.
New techniques in single-family, onsite and cluster technology are stirring up interest in the wastewater treatment industry.

Purification Facilities Will Protect City's Water Supply   Water Engineering & Management September 1998
New water purification facilities constructed by J.S. Alberici Construction Co., Inc., in Milwaukee, Wisconsin, will ensure the safety of the city's water supply.

Generating Chlorine Dioxide Gas:Chlorate vs. Chlorite   Water Engineering & Management September 1998   Douglas Rittmann, P.E. and Joel Tenney
Is a new method of generating chlorine dioxide gas using sodium chlorate more effective than the typical sodium chlorite system?

Alternative Technology Filtration Plant Based on California Department Regulations   Water Engineering & Management September 1998   David Pafundi and Paul Berry
Faced with exorbitant costs for conventional filtration treatment, one California city tried an alternative technology.

Automated System Ensures Compliance at Racine Municipal Wastewater Plant   Water Engineering & Management September 1998   Rick Pace
This plant upgraded to a new chlorination system to reduce treatement costs and comply with tightnening regulations.

Large Anthracite Media Does the Job   Water & Wastes Digest September 1998   Bill Scully
Tertiary Filtration Piloting conducted at two different WWTPs demonstrate improved performance of large anthracite media compared to dual and single sand media filtration.

Wastewater Treatment Plant Installs Covers & Scrubber System to Control Odor Emissions   Water & Wastes Digest September 1998

A Bioremedial Solution for New Jersey Sewage Lift Station   Water & Wastes Digest September 1998

Automatic Aeration Control Saves Money   Water & Wastes Digest August 1998
Maintaining the proper concentration of dissolved oxygen (D.O.) in an aeration basin is necessary to keep microorganisms alive to break down organic waste.

Calcium Hypochlorite Chlorinating System Reduces Microbial Growth   Water & Wastes Digest August 1998

Membrane Technology Offers High Quality Water at Low Cost for Ontario Municipality   Water Engineering & Management July 1998
Two factors have significantly changed the course of the Township of Ernestown's, located in eastern Ontario, search for a cost-effective approach to upgrading its Amherst (population 6,100) water system.

Standards Development Consensus Process for Alternative Water Treatment Device Systems   Water Quality Products June 1998   Nancy J. Culotta
An article announcing NSF International's letter survey to manufacturers of Alternative Water Treatment Devices (AWTDs).

Odor Solution in Oceanside, Calif.   Water & Wastes Digest May 1998

How to Sanitize a Well in 10 Easy Steps   Water Quality Products May 1998
It is important to sanitize a well twice a year whether it is a new well or an existing well

Reverse Osmosis Used to Purify and De-nitrify Water in a Municipal Plant   Water Engineering & Management May 1998

Ozonation System Tested in Anticipation of Disinfection By-Product Rule   Water Engineering & Management May 1998   Aubrey LaFargue
In order to comply with more stringent government regulations, one plant converted from chlorine to ozone treatment.

Automated Chlorination System Helps Chicken Processing Plant Meet U.S.D.A. Sanitation Guidelines   Water & Wastes Digest April 1998

South Pole Station Provides Water Challenges   Water Engineering & Management March 1998   John Stricklan

A Clear View of the Titanic   Water Engineering & Management March 1998

Optimizing Your Industrial Wastestream Costs   Water Engineering & Management March 1998   David A. Wensloff

Hydrogen Sulfate Problem Solved with a System Upgrade   Water Engineering & Management February 1998

Phosphorus Inactivation In Wastewater Treatment: Biological and Chemical Strategies   Water Engineering & Management February 1998   Christopher B. Lind
Various treatment methods are available for reducing phosphorous with the choice dependent on the situation.

Creating Safer Work and Community Environments: Gaseous Chlorine to Liquid Bleach Conversions   Water Engineering & Management February 1998   David J. Applegate, P.E.
Converting from gaseous chlorine to sodium hypochlorite can save money and create a safer enviornment for workers.

Organoclay Provides Membrane Protection for Aircraft Part Manufacturer   Water & Wastes Digest February 1998

Obregon Renovates Wastewater Treatment   Water & Wastes Digest February 1998

FLPC Totally Eliminates Odors   Water & Wastes Digest January 1998

Wastewater Treatment Plant Cuts Costs, Improves Performance with Chemical Induction System   Water & Wastes Digest January 1998

How Your Municipality Can Save Money By Recycling Disposable Diapers   Water Engineering & Management December 1997   Ralph J. Gall

A Safe Option for Disinfection: On-Site Sodium Hypochlorite Generation   Water Engineering & Management December 1997   L. Ainsworth and J. Hampton

Getting the Lead Out in Leadville, Colorado   Water Engineering & Management November 1997

New Pre-treatment System to Help Remove Cloudiness from Drinking Water   Water Engineering & Management November 1997

The Effect of Nitrification on Sampling Sites   Water Engineering & Management November 1997   Shin-Ichi Tokuno and Floyd Baker
This article reports on chloramine dissipation with regard to nitrification and how it affects the CT value in plant operation

Water Disinfection Project Addresses Aral Sea Crisis   Water Engineering & Management October 1997   Jesse Wolf and Syed Mahmood
New chlorination systems may help stem the tide of disease and infant mortality brought about by the destruction of the Aral Sea.

Pilots Prove that Larger is Better   Water & Wastes Digest September 1997   Bill Scully
Tertiary Filtration Piloting conducted at two different WWTPs demonstrate improved performance of large anthracite media compared to dual and single sand media filtration.

On-site System Handles Shopping Center Wastewater Treatment   Water & Wastes Digest September 1997
As part of Westbrook Factory Stores' commitment to a clean and safe environment, an advanced ZenoGem® on-site wastewater treatment and reclamation system has been installed.

Mixed Oxidant System Eliminates Gas Chlorine at Wastewater Plant   Water Engineering & Management August 1997

Filter Process Removes Cryptosporidial Oocysts From Water Supplies   Water Engineering & Management August 1997   James A. Bell, P.E. and Dr. Graeme K. Pearce
A backwashable depth filter process removes and destroys these microorganisms with great efficiency.

Descaling System Prevents Struvite Build-up   Water Engineering & Management July 1997

Cost-Effective Wastewater Treatment Process for Removal of Organics and Nutrients (Part 2)   Water Engineering & Management July 1997   By Dr. Botho Boehnke, Dr. Bernd Diering and Dr. Stefan W. Zuckut
New processes are being designed to deal with stricter wastewater treatment standards and regulations.

Particle Counts Can Benefit From Changes In Coagulant Programs   Water Engineering & Management May 1997   Christopher B. Lind
Four recent case studies show that it is possible to lower particle counts with coagulants while improving other operating factors.

Cost-Effective Wastewater Treatment Process for Removal of Organics and Nutrients (Part One)   Water Engineering & Management May 1997   Dr. Botho Boehnke, Dr. Bernd Diering and Dr. Stefan W. Zuckut
New processes are being designed to deal with stricter wastewater treatment standards and regulations

Using Correct Conductivity Temperature Compensation   Water Engineering & Management May 1997   Lori L. McPherson
To avoid large measurement errors in solutions other than water, the correct temperature coeffient must be calculated and used.

Lemnacea Plants Help Delaware Town Earn EPA "Facility of the Year"   Water & Wastes Digest May 1997

Nashville Solves CSO Floatables Problem   Water & Wastes Digest May 1997

Industrial Wastewater Treatment Facility Improves Operating Efficiency with Voice MMI   Water & Wastes Digest March 1997

Equipment Helps Provide Clean Water to City of Krakow   Water Engineering & Management March 1997   Wojciech Studnicki and Jan Smaczny
The City of Krakow, Poland, upgraded its water supply system by purchasing and installing modern equipment.

Ozone, Direct Filtration System Performance Prove Technology's Value   Water Engineering & Management March 1997
A three-year test of ozone and direct filtration so convinced the Altoona City Authority (ACA) of its merits that the central Pennsylvania water authority is now installing the technology at six new treatment plants and will retrofit another by 1999.

Fast Feedback on Coliform Levels Gets Treatment Plant Back on Track   Water Engineering & Management February 1997

Obtaining Copper-Free Water   Water Engineering & Management February 1997   Purvee Gandhi
Experimentation proves that copper can be extracted from water using a product obtained from the shells of crabs and shrimp.

Chlorine Dioxide Provides Solutions For Waste Oil Refinery   Water Engineering & Management February 1997   Sherri Downing, Scott Marckini and Bill Rondeau
Many industrial facilities must meet discharge regulations for pollutants. For phenols, chlorine dioxide has proven successful.

Superoxygenation Process Treats Highly Concentrated Wastewaters   Water Engineering & Management February 1997   Richard Maas, Ph.D., Theo Pritchett, M.S.CH.E. and Robert Winfield
This process may have the ability to superoxygenate highly BOD-concentrated waste streams quickly and efficiently enough to facilitate their cost-effective treatment.

Granular Activated Carbon Filtration and Nitrification   Water Engineering & Management February 1997   Shin-ichi Tokuno
GAC filter media is widely used for filtration and absorption, but potential problems with bacteria in GAC's application need to be explored.
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City Converts Wastewater Treatment Facility to Sequencing Batch Reactors   Water Engineering & Management January 1997   Michael J. Waresak, P.E.
Batch system provides solution to the ever-increasing influx of wastewater and more stringent limits in Lenoir, North Carolina.

Controlling Hydrogen Sulfide Emissions   Water Engineering & Management December 1996   Gary J. Nagl
This toxic, corrosive and obnoxious odor can be treated with numerous processes to recover it in an innocuous form.

Sludge Management Savings Found Among the Reeds   Water Engineering & Management December 1996   Joe Hastreiter
The use of reed beds are resulting in a sizable savings in sludge handling costs for some small wastewater treatment plants.

Engineering Parameters in the Design of Evapotranspiration Beds   Water Engineering & Management November 1996   Wayne L. Frank, P.E.
These systems are a potential alternative for domestic sewage disposal at locations where the evapotranspiration rate exceeds precipitation and wastewater inflows.

Media-Bed Filtration: Painstaking Analysis of Situation Leads to a Long-Term Solution   Water Engineering & Management October 1996   E. Marvin Greenstein
Many filtration products are available. Asking the correct questions is important in obtaining an optimum product for the desired application.

Treating Water in the Metal Finishing Industry   Water & Wastes Digest September 1996
Forty years ago when the metal finishing industry burst forth into big business, profits were high and competition was not too fierce. Today, things are different.

Wastewater Treatment by VSEP   Water & Wastes Digest July 1996   Arne D. Armando
Treatment of wastewater and drinking water by membrane vibrational shear enhanced processing (VSEP) has enjoyed increasing popularity over the past 20 years.

Aspirating Aeration Reduces BOD Loading in Municipal Treatment System   Water Engineering & Management July 1996   Darrell T. Davis
The switch from surface splashing to aspirating aerators helped one city lower its BOD

Containment Methods for Odor Control Systems in Wastewater Plants   Water Engineering & Management June 1996   Arie Kepets
Wastewater treatment facilities are being force to re-evaluate procedures for containing and processing odors and emissions of VOCs and HAPs as a result of new regulations

Wastewater Plant's Success Spawns Salmon and Sponges   Water Engineering & Management May 1996   Jeanne Spacek
By adding filtration and disinfection to their wastewater treatment plantthe East Chicago Sanitary District has found some strange and welcome inhabitants in the disinfection contact chamber.

Programmable Aeration Control System Reduces Plant Energy Costs   Water Engineering & Management May 1996   Charlie Hewitt
The utilization of an accurate aeration control system optimizes process efficiency and can reduce plant energy by as much as 25 percent.

Operations Solution Succeeds Where Science Comes Up Short   Water Engineering & Management May 1996   Ron Laro and Jim Lauzon
Faced with BOD and TSS levels over their limits due to a yeast problem, one facility focused on controlling the problem when the source was not immediately found.

Selecting a Supplier for Wastewater Pretreatment   Water Engineering & Management April 1996   R.B. "Jones" Grubbs
Biological supplementation has become one option for wastewater pretreatment. Buyers must look carefully to choose the best source.

Past, Present and Future of the RBC Industry   Water Engineering & Management April 1996   Lew/Andowski
The Rotating Biological Contractors process seems to have solved previous problems and is now viable for wastwater treatment.

Cost-Effective Treatment for High Quality Water Sources: Extreme/High-Rate Serial Filtration   Water Engineering & Management February 1996   Craig M. Thompson
Pilot tests have demonstrated that EHRSF can meet Surface Water Treatment Rule requirements.

Coagulation and Filtration Performance Optimized With Liquid Borne-Particle Counters   Water Engineering & Management February 1996   Kent Horrell and Tony Sweazy
No longer are turbidimeters the sole measurement method for water purity levels.
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Treatment Strategies for Radon in Public Water Supplies   Water Engineering & Management January 1996   John K. O'Connell
While no standards have been ratified for levels of radon in water, facilities must be prepared.

Equipment Damage and Downtime Eliminated with Drive Motors   Water Engineering & Management January 1996   Paul Backes
Electronic monitoring and protection devices are being used to prevent jam-ups in unmanned or partially manned treatment and pumping stations.

New Strategy Cuts Plant's Polymer Consumption in Half   Water Engineering & Management December 1995   Harold Walker
An improvement in polymer activation has helped save Hopewell, VA, between $50,000 and $75,000 per year.

The Importance of Filtration in Wastewater Reclamation   Water Engineering & Management October 1995   George Tchobanoglous and Onder Caliskaner
Effluent filtration is an integral part of secondary treatment as discharge requirements become more restrictive.
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Bearing Replacement Saves Many Maintenance Dollars   Water Engineering & Management September 1995
By changing bearing types, a 21-year old plant has increased the time between overhauls of its flocculators and saved money, too.

Software Optimizes Steam Stripping Process for Organics Removal   Water Engineering & Management September 1995   Brian O'Rourke
Installing the proper software and keeping equipment operating at optimum levels is the key to improving organics removal.

Membrane Applications in Water Plants   Water Engineering & Management August 1995   Ian Lisk
Faced with upgrading aging facilities, a Florida water utility decided to incorporate reverse osmosis.

Membrane Specialists Gather for International Conference   Water Engineering & Management May 1995   Ian Lisk
The latest on membrane technology for water treatment.

Liquid/Solid Separation: The Chemicals Used to Make it Better   Water Engineering & Management April 1995   William T. Lorenz
A discussion of the coagulation and flocculation chemicals used in separation processed at treatment plants.

Control System for Odorous Emissions from Rock Media Trickling Filters   Water Engineering & Management April 1995   Manuel Ponte and M. Boyd Miller
A New Jersey wastewater authority undertook a project to protect city residents from odors from the plant's two trickling filters.

Automated High Rate Filters Improve Performance, Reduce Costs   Water Engineering & Management April 1995   Morrison Coulter
A Philadelphia water company improved the performance of and reduced the operating costs of its filtration system with modernized high-rate gravity filters.

Installing Advanced Disinfection Hardware Achieves Plant Upgrade   Water Engineering & Management March 1995
A case study describes a full-scale UV disinfection system.

Pennsylvania Program Helps Improve Drinking Water Safety and Quality   Water Engineering & Management March 1995   Phil J. Consonery
One state's plan to improve the performance of surface water filtration plants and achieve better water quality.

Niagara Falls: Freedom After Thirteen Years of Hard Labor   Water Engineering & Management February 1995   Ian Lisk
Designed and built in the Ô70s, broken down in the early Ô80s, the advanced wastewater plant is a success story in the Ô90s.

Reduction of Chlorite Concentration in Potable Water with Ferrous Chloride   Water Engineering & Management February 1995   Anthony Tarquin, Glen Hansel, and Douglas Rittmann
Chlorite residuals in drinking water can be reduces with ferrous chloride, as testing in El Paso has shown.

The Biological Activated Carbon Process for Water Purification   Water Engineering & Management December 1994   Bertrand W. Dussert and Gary R. Van Stone
The biologically enhanced carbon process is an option for many water utilities.

Paper Mill Adds Ammonia to Meet Effluent Standard   Water Engineering & Management November 1994   Brian Morgan, Derek Smith, Sr., and Peter Kerevan
Ammonia-fed wastewater provides required nitrogen in discharge.

Planting Waste Process Includes Microfiltration   Water Engineering & Management November 1994   Michael Dineen
A specialized pollution control system is used for pretreatment at a metal plating business in Massachusetts.

More Output, Better Effluent Quality, From a Tight Land Package   Water Engineering & Management November 1994   Ian Lisk
A wastewater plant increases capacity, but not area.

PLant Removes Phosphorus to Protect Scenic River   Water Engineering & Management October 1994   Charles Edwards and Michael Arand
A new Oklahoma wastewater treatment plant incorporated sequencing batch reactors and a design that qualified for federal funding.

DAF and Ozone Eliminate Quality Woes, Meet New Regs   Water Engineering & Management October 1994   Ian Lisk
A New York State town developed a water treatment plant which uses dissolved air flotation and ozone disinfection to ensure meeting anticipated tighter regulations.

Evaporation - A Wastewater Treatment Alternative   Water Engineering & Management September 1994   Tom M. Pankratz
The recovery of valuable materials or separation of hazardous materials from wastewate flows can sometimes be accomplished with evaporation technology.

The Chesapeake Bay Plan: Restoring an Estuary in Distress   Water Engineering & Management September 1994   Peter T. Worthen
This overview describes how an aeration process is playing its part in improving the qualit