America’s Most Endangered Rivers report is one of the most effective tools in the environmental movement for publicizing threats to rivers and galvanizing the public to take action. The 2013 report highlights a number of key threats, and shines the spotlight on rivers running dry because of outdated water management, wasteful water use, and persistent drought.
Great River Energy Spiritwood: Combined Heat and Power Plant - Case study
Great River Energy (GRE)Spiritwood, North DakotaPlant OwnerGreat River Energy (GRE)Plant NameSpiritwood StationLocationSpiritwood, North Dakota B&W ScopeCoal-fired internal recirculation circulating fluidized-bed (IR-CFB) boiler including: Structural steel Fans and motors Tubular air heaters Economizer Steam coil air heaters Steam sootblowers by Diamond Power International, Inc., a B&W subsidiary Multi-cyclone dust collector (MDC) Ash recycle/reinjection system by Allen-Sherman-Hoff, a...
Water is the most valuable asset on earth, which determines to a significant extent the development of life in all corners of the world. 95% of the amount of water on earth is chemically bound in rocks making it impossible to utilize and be part of the hydrological cycle. Of the remaining 5%, 97% is saline found in oceans and seas, while the remaining 3% is distributed: • 2,37% in polar ice and glaciers • 0,6% in deep underground aquifers, which are not exploitable • and finally 0,03% in...
Effect of source water/wastewater quality on bacterial removal during electrocoagulation
Bacterial removal during electrocoagulation (EC) was investigated employing samples from four different water/wastewater sources, namely, greywater, river water, secondary treated sewage and tap water spiked with Escherichia coli. Effects of current density and electrolysis time on the bacterial removal with aluminium electrodes were evaluated. For greywater, river water and secondary treated sewage, total coliform and E. coli removal efficiencies were not significantly different for the tested samples and varied...
Assessment of toxic metals in water and sediment of Pasur River in Bangladesh
This study was conducted to assess the levels of toxic metals like arsenic (As), chromium (Cr), cadmium (Cd), and lead (Pb) in water and sediments of the Pasur River in Bangladesh. The ranges of Cr, As, Cd, Pb in water were 25.76–77.39, 2.76–16.73, 0.42–2.98 and 12.69–42.67 μg/L and in sediments were 20.67–83.70, 3.15–19.97, 0.39–3.17 and 7.34–55.32 mg/kg. The level of studied metals in water samples exceeded the safe limits of drinking water, indicating that water from this river is not safe for drinking and...
A flying river? How the Amazon Forest produces the largest flying river in the world
The Amazon Rainforest is worldwide known for its extraordinary biodiversity and large rivers. The facts speak for themselves. It is the largest tropical forest in the world, covering five million and a half square kilometers in nine countries, including Brazil, which presents 60% of the forest cover. It presents the highest biodiversity among all tropical forests in the world. One in ten known species in the world lives in the Amazon Rainforest. The Amazon basin is also the largest drainage basin in the world....