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Nalco Mobotec Announces Mercury Control Contract with Springfield, Illinois Office of Public Utilities

Nalco (NYSE: NLC) and its subsidiary Nalco Mobotec Inc., a global leader in air protection technology, announced a contract with the City of Springfield, Ill., for mercury emission control at the city’s Dallman Power Station. The one-year agreement, with two one-year options, will help the City of Springfield Office of Public Utilities, commonly known as City Water Light and Power (CWLP) reduce mercury emissions to comply with the Illinois EPA’s 2009 mercury emissions regulations that include increased mercury capture requirements through 2013.

CWLP performed months of rigorous testing and balance of plant initiatives to assess Nalco Mobotec’s patented MERCONTROL® technology’s effectiveness at increasing the total amount of mercury removed in conjunction with CWLP’s existing air quality control equipment. The tests demonstrated MERCONTROL technology allowed capture of greater than 90 percent of total mercury without the use of activated carbon. These results will enable the Dallman Station unit 33 to meet the Illinois EPA’s regulatory limits of less than 0.008 lbs./GWhr. In addition, MERCONTROL 7895 did not degrade the integrity of CWLP’s fly ash by-products, which can be a revenue source for the utility.

“Nalco’s expertise in both water and air technologies provided our utility additional tools to improve our mercury control strategy,” said Gregg Finigan, CWLP’s Superintendent of Production for the Dallman Station. “Nalco and Nalco Mobotec’s knowledge, research capabilities and testing resources helped demonstrate improved results for mercury capture in flue gas and mercury removal in FGD (flue gas desulfurization) wastewater. With the application of Nalco technologies, CWLP is in a better position to meet mercury regulatory limits in both our flue gas emissions and wastewater. This enables CWLP to provide our customers reliable energy using environmentally-friendly processes to assist with our mercury emission control.”

“CWLP challenged us to address the entire spectrum of mercury in both air emissions and wastewater. Our NALMET® technology reduced dissolved mercury concentrations in the FGD wastewater of the plant, while our MERCONTROL technology effectively oxidized mercury for capture in air emissions. Together, these two technologies deliver the optimal solution for CWLP’s compliance needs,” commented Dwayne Kearns, General Manager of Nalco Mobotec and Nalco Air Protection Technologies. “Working alongside the CWLP team, both entities are proud of the efforts that produced a positive impact on the environment.”

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