Water & Wastewater E-Zine
August 2009
This Month´s Featured Articles, Papers & Reports
Many of the nation’s beaches found with high levels of contamination
The frequency of public beach closures due to illnesses attributable to recreational water exposure has been a growing concern for health officials and the number of incidences and outbreaks in some areas has been increasing. The Environmental Protection Agency (EPA) is responsible for setting water quality standards for the nation’s beaches and recreational waterways. According to a recent report from the National Resources Defense Council (NRDC), 7% of beach water samples are not safe for swimming ...
Ground-breaking innovation in rainwater harvesting
Rainwater harvesting has for centuries been performed using simple methods. At the start of the 1990s, the first companies began launching standardised components on the German market. In 1997, at the leading international trade fair for sanitary, heating and climate control technology, the ISH, INTEWA was one of the first companies to present a complete station for rainwater harvesting. The outstanding feature of the complete station is that the building services of a rainwater plant can be combined ...
SPONSOR
The NEFCO® Density Current Baffle System 2.0

Studies by the USEPA and others show that density currents form in all activated sludge secondary clarifiers, regardless of size and shape, and have a significant, adverse effect on clarifier performance. The new NEFCO® Stamford Density Current Baffle System 2.0 is specifically designed to intercept and dissipate these currents and redirect their flow back into the main clarification volume of the tank, increasing hydraulic capacity and producing as much as a fifty percent reduction in total suspended solids. The NEFCO® Baffle has been called "...the most cost-effective improvement in clarifier performance available today." The new baffle design is the result of four years of CFD modeling.

 

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