Wastewater
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Legal & Regulatory
A Comparison of ELG Compliance Options for Flue Scrubber Wastewater
Meeting the requirements of the Effluent Limitations Guidelines (ELG) means careful consideration of the various options. Both biological treatment and zero liquid discharge (ZLD) approaches have their place, but ZLD may offer more flexibility for the future. On September 30, 2015, the Environmental Protection Agency (EPA) issued the final effluent limitation guidelines (ELGs) rule for […]
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Coal
NRG Penalized for Faulty Wastewater Treatment at Maryland Coal Plants
NRG Energy will pay $1 million in penalties, install environmental projects worth another $1 million, and complete costly upgrades under a consent decree it entered into with the state of Maryland to resolve wastewater discharge violations at two coal-fired power plants owned by its subsidiary GenOn. The settlement results from a June 2013 complaint Maryland […]
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Water
Water and Wastewater Treatment Technology Update
Water is the lifeblood of a thermal power plant. As such, obtaining clean and pure makeup water and dealing with wastewater has been a requirement since the first steam generating unit went into operation. As
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Water
Feedwater Chemistry Meets Stainless Steel, Copper, and Iron
Alloys found in the condensate and feedwater systems of power plants include carbon steel for piping, pumps, and in some cases heat exchangers. Many systems still have some copper-based alloys from admiralty
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Geothermal
New Zealand Strives to Maximize the Value of Geothermal Wastewater
Geothermal resources have important strategic value for New Zealand, as they are able to directly supply both heat and electricity (see “New Zealand Geothermal Industry Is Poised for the Future” in this
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Coal
North Carolina Sues for Coal Ash Water Contamination at 12 Duke Energy Sites
North Carolina on Friday sought a state Superior Court order to force Duke Energy to address groundwater and wastewater violations at 12 power plant sites that the utility uses to store coal ash residuals. The state’s Department of Environment and Natural Resources (DENR) filed two lawsuits for injunctive relief against Duke Energy Progress Inc. and […]
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