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January 1, 2003

Opening the Floodgates

January 1, 2003By Dan Cobb, PE, Vaikko Allen

Regulation drives a surge in innovative solutions for stormwater treatment

Non-point source pollution has emerged as the leading cause of pollution threatening the health of watersheds around the country. Typical urban runoff transports pollutants such as trash, hydrocarbons (including motor oil and gas), sediment and countless human-made (anthropogenic) chemicals to our lakes, rivers and oceans.

A Texas-Size Toast to Pure Water

November 1, 2002By Rishabh Khara

Located in Dallas County, the largest ozonation facility in the world uses the ozone process to successfully control tastes and odors in drinking water

Currently, the process of ozonation is being implemented in drinking water purification in treatment plants around the globe. Ozone is a potent agent in the disinfection of raw water. When raw water is pumped into the treatment plant, it carries many bacteria and viruses. The use of ozone eradicates these harmful pathogens.

An Anaerobic Exercise

November 1, 2002By Shannon R. Grant, MScE, PE, Shashi Gorur, ME, PE, James C. Young, PhD, PE, Robert Landine, PhD, PE, Albert C. Cocci, PhD, PE, C. Calvert Churn, PhD, PE

A comparison of anaerobic treatment technologies for industrial wastewater

Anaerobic treatment of industrial wastewater has come a long way in the past 10 to 20 years. Prior to 1980, the process was deemed unreliable for its lack of robustness and overall instability, primarily due to misunderstandings of the biochemical pathways involved and the factors governing sludge characteristics.

Homeland Defense and Security Resources

November 1, 2002By Water and Wastewater News Staff

The preparedness effort is moving ahead with so much information and so many perceived threats, it seems impossible to stay fully informed

Weapons of Mass Destruction -- Any device, material, or substance used in a manner, in a quantity or type, or under circumstances evidencing an intent to cause death or serious injury to persons or significant damage to property.

A Marriage of Remediation Technology

September 1, 2002By Charles Cohen, Thomas E. Jamrok

Horizontal drilling adds to classical drilling methods for groundwater remediation approaches

Isn't the number of remedial technologies that actually exist to remediate and protect groundwater amazing? Not only does industry have a wide selection of pump and treat options, there is a full array of in-situ technologies that engineers continue to conceive and refine.

America's Drinking Water Dilemma

September 1, 2002By Patrick J. Sullivan, Franklin J. Agardy, James J.J. Clark, PhD

Do drinking water standards really protect the public health?

In today's chemically dependent society, it has been undeniably demonstrated that America's drinking water contains numerous industrial chemicals, pesticides, pharmaceuticals and compounds from the water treatment process itself.

Immersed in Its Work

September 1, 2002By Hadi Husain, PhD, PE

Installed within the bioreactor, a new membrane technology redefines sewage treatment and effluent reuse

Membrane bioreactor (MBR) has emerged as the wastewater treatment technology of choice for an increasing number of municipalities over the last five years. This growth is driven by the very high quality effluent produced by MBR -- exceeding strict standards or ideal for direct reuse -- and is fuelled by a steady reduction in treatment cost resulting from improvements in membrane productivity.

Keep on Truckin'

September 1, 2002By Arthur Cuse

An increasing awareness of the environmental impact of vehicle oil and grease leakage from U.S. trucks and cars is leading to new approaches to prevent this major source of stormwater pollution

First, we discovered that our vehicles were polluting the air we breathe. Now, we're beginning to realize the extensive amount of stormwater pollution that is being caused by our trucks and cars.

News

September 1, 2002

New discoveries, experiments and scientific breakthroughs in the water and wastewater industry.

Sculpting Wastewater Treatment

September 1, 2002By Richard Brown

A clay-based technology molded for small quantity wastewater generators

Virtually all industrial activities generate some amount of wastewater. Disposal of this water in an environmentally responsible way has been a legal requirement since the passage of the Clean Water Act in 1972.

Water, Water Everywhere

September 1, 2002

Test your water knowledge with our water trivia questions.

Red Mud Wrestling

July 1, 2002By Robert Gambrell, Irving Mendelssohn, Norman Murray

A soil-like industrial by-product may be successful for enhancing or restoring Louisiana coastal marshes

Louisiana contains approximately 40 percent of the coastal wetlands in the United States. These wetlands consist of swamps and both economically and environmentally important freshwater and saltwater marshes. The wetlands support nearly a third of the fish and shellfish yields in the lower 48 states and approximately 40 percent of its fur harvest, while there are more than 200,000 acres of private oyster leases. Also, the wetlands provide a wintering habitat for more than half of the ducks and geese in the Central and Mississippi Flyways.

The Insider

July 1, 2002

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TIE Up the Loose Ends

July 1, 2002By David Pillard, J. Russell Hockett

Toxicity identification evaluation (TIE) as a tool for water quality management

Whole effluent toxicity (WET) testing has evolved into a critical element of many National Pollutant Discharge Elimination System (NPDES) permits issued to both industrial and municipal dischargers. More than 6,500 dischargers to both fresh and salt waters are required to conduct toxicity tests to determine if their effluent might be potentially toxic to organisms in the receiving system.