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.
| Translated title of the contribution | Analysis and improvement measures of nitrification using industrial wastewater with high Nikel concentration |
|---|---|
| Original language | Korean |
| Pages (from-to) | 501-507 |
| Number of pages | 7 |
| Journal | 한국습지학회지 |
| Volume | 19 |
| Issue number | 4 |
| DOIs | |
| State | Published - Nov 2017 |