March 2017

In February, Scott Pruitt was confirmed as head of the U.S. Environmental Protection Agency (EPA). As expected, his confirmation was denounced by progressives, who argued that Pruitt has no interest in enforcing environmental laws. For example, 447...
How is it that a chemical process developed prior to 1910 in Germany is now having significant effects on U.S. waterways? Agricultural productivity is directly related to the holding capacity of the planet’s human population. Some estimate that the Earth...
The NMF lies beneath Limerick Street Field, a multi-purpose athletic field that was donated to the City of Alexandria by AlexRenew.  Name: Nutrient Management FacilityLocation: Alexandria, Va.Size: 18 million galInfrastructure: Tanks, pumps, valves...
Ball and butterfly valves receive their names from the insolating element in each valve that controls the flow of media.  Process valve automation is a crucial component of process control. The water and wastewater treatment industry is driven by...
Marina del Rey is the world’s largest man-made small craft harbor. It serves 6,500 boats and is considered “Los Angeles County’s most valuable resource,” according to the Los Angeles Times. However, the harbor waters have been identified as an impaired...
Rebuilding the 46-year-old center runway at Seattle-Tacoma International Airport (Sea-Tac) involved more than just the pavement. To comply with strict Federal Aviation Administration (FAA) criteria regarding drainage within runway safety areas, as well...
The application of ultraviolet (UV) advanced oxidation processes (AOPs) in direct and indirect potable reuse treatment trains is a commonly accepted technology to provide a barrier against pathogens and micropollutants that are not completely removed by...
Given the scarcity of freshwater in drought-stricken areas, water reuse projects are essential. Equipping a wastewater plant with a non-potable or reclaimed water reuse system reduces water demand, provides revenue for the water utility and reduces the...
Figure 1. Chlorine Tanks The staff of a municipal water treatment plant had been experiencing problems with the facility’s disinfection treatment system, which relies on chlorine for water purification. Chlorine remains a popular drinking water...
The LaSalle Lift Station will provide a net savings of $17 million over the next 50 years.  The Waco (Texas) Metropolitan Area Regional Sewer System (WMARSS) owns, operates and maintains five major lift stations and their associated gravity...

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