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http://dx.doi.org/10.17663/JWR.2017.19.4.501

Analysis and improvement measures of nitrification using industrial wastewater with high Nikel concentration  

Im, Jiyeol (Department of Civil Engineering, Seoul National University of Science and Technology)
Gil, Kyungik (Department of Civil Engineering, Seoul National University of Science and Technology)
Publication Information
Journal of Wetlands Research / v.19, no.4, 2017 , pp. 501-507 More about this Journal
Abstract
The heavy metal such as Nikel (Ni) in industrial wastewater is one of the major reasons of decreasing nitrification efficiency in municipal wastewater treatment plants (MWTPs). In this study, laboratory scale reactors were operated in order to analyse of nitrification efficiency and improvement measures. As a result, nitrification efficiency during high Ni concentration (0.295 mg/L) was about 20%. However nitrification efficiency during low Ni concentration (0.114 mg/L) was over 70%. The changes of the micro-organism activity according to Ni concentration was investigated as being the major reason behind the gap of nitrification efficiency through analysing AUR and SNR. Increasing the HRT in high Ni concentration also increased the nitrification efficiency. Thus, maintenance of microorganisms and increasing the HRT in nitrification reactors suggests that measures taken to treat wastewater is positively correlated with high concentration of heavy metal.
Keywords
Municipal wastewater treatment plant; Nitrification; Industrial wastewater; Heavy metal; Nikel;
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Times Cited By KSCI : 2  (Citation Analysis)
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