Drinking water professionals know that the quality of raw or finished water supplies may be adversely impacted by a number of contaminants, including petroleum products from leaking tanks or pipelines, insecticides and herbicides from agricultural runoff, pathogens from untreated sewage discharges and others.
- By Robert Ferguson
- July 01, 2003
This article originally appeared in the 07/01/2003 issue of Environmental Protection.
Methyl Tertiary Butyl Ether (MTBE) is a gasoline additive used to oxygenate and add octane to gasoline. Since the late 1970s, lead has been banned from use in automobile fuel use due to its toxicity to humans, leading to the problem of low oxygenation in gasoline that has caused exhaust to be more easily trapped in urban airsheds.
- By Aaron Jensen
- May 01, 2003
This article originally appeared in the 05/01/2003 issue of Environmental Protection.
While Asia's public and private sector stakeholders strive to achieve robust economic growth, they are faced with the daunting task of mitigating the effects of that growth on the environment and addressing a wide range of legacy environmental problems, particularly in the areas of water and wastewater management.
- By Doug Shuster, Kim Mihalik, Maria Gilpin
- January 01, 2003
This article originally appeared in the 01/01/2003 issue of Environmental Protection.
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.
- By Rishabh Khara
- November 01, 2002
This article originally appeared in the 11/01/2002 issue of Environmental Protection.
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.
- By Patrick J. Sullivan, Franklin J. Agardy, James J.J. Clark, PhD
- September 01, 2002
This article originally appeared in the 09/01/2002 issue of Environmental Protection.
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.
- By Charles Cohen, Thomas E. Jamrok
- September 01, 2002
This article originally appeared in the 09/01/2002 issue of Environmental Protection.
Bioremediation -- cleaning up soil and groundwater contamination with indigenous bacteria -- has been a holy grail for property owners and consultants, since it can eliminate active pumping systems, which include associated operations and maintenance, as well as treatment and disposal costs. However, the natural pace of unamended bioremediation or "leave-alone" natural attenuation tends to be too slow and uncertain to be practical.
- By Bryan W. Vigue, Stephen S. Koenigsberg, Ph.D.
- May 01, 2002
This article originally appeared in the 05/01/2002 issue of Environmental Protection.