Open AccessStart-up of Anammox and Effect of Fe2+ on Nitrogen Removal Rate
Author(s) -
Bing Wang,
Bing Sun,
Yunlong Liu,
Lin Yang
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/787/1/012042
Subject(s) - anammox , denitrification , ammonium , chemistry , nitrogen , environmental chemistry , anaerobic exercise , sewage sludge , sewage , environmental engineering , denitrifying bacteria , environmental science , biology , organic chemistry , physiology
Anammox reaction was started by inoculating sewage plant digested sludge, and the change of N element in the reactor was detected. It was found that Anammox needed to go through three parts: hydrolysis period, activity lag period and activity increase period. The effect of different Fe 2+ concentrations on the denitrification rate was investigated with the well-run Anammox sludge as the inoculation sludge. The results showed that Fe 2+ had a positive effect on the anaerobic ammonium oxidation reaction within a certain concentration range, while the denitrification effect would be inhibited if the concentration was too high. When the concentration of Fe 2+ was 0.08mmol/L, Fe 2+ on Anammox had the best denitrification effect.