Corrosion management in power plant cooling systems using tertiary-treated municipal wastewater as makeup water

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• 作者：Mahbuboor R. Choudhury^a ; ^{mahbuboor@gmail.com} ; ^{mchoudhu@andrew.cmu.edu} ; Ming-Kai Hsieh^a ; Radisav D. Vidic^b ; David A. Dzombak^a
• 关键词：MWW ; secondary-treated municipal wastewater ; TMWW ; tertiary-treated municipal wastewater ; MWWpH ; MWW with pH reduction by acidification ; MWWNF ; MWW with nitrification and filtration ; MWWNFG ; MWW with nitrification-filtration and granular activated carbon
• 刊名：Corrosion Science
• 出版年：2012
• 期刊代码：28_0010938x
• 类别：ch
• 出版时间：August, 2012
• 卷：61
• 期：Complete
• 页码：231-241
• 文件大小：621 K

摘要

Additional tertiary treatment of secondary-treated municipal wastewater (MWW) is necessary to reduce its scaling potential for use in power plant cooling systems. In this study corrosiveness of three tertiary-treated municipal wastewaters (acidified MWW, MWW treated by nitrification-filtration, and MWW treated by nitrification-filtration and granular activated carbon adsorption) towards mild steel, copper, and cupronickel alloys was assessed. pH, ammonia, and organic matter were identified as important corrosion influencing parameter in tertiary-treated municipal wastewater. Corrosiveness of wastewater towards metal alloys increased after tertiary treatments. However, corrosion of mild steel and copper alloys was controlled within acceptable limits using the corrosion inhibitor tolyltriazole.