期刊名称：IOP Conference Series: Earth and Environmental Science
印刷版ISSN：1755-1307
电子版ISSN：1755-1315
出版年度：2019
卷号：300
期号：3
页码：1-9
DOI：10.1088/1755-1315/300/3/032087
出版社：IOP Publishing
摘要：A partial nitritation-anaerobic ammonium oxidation (ANAMMOX)-denitrification (PNAD) process was activated to provide the basis and experience for engineering. A stirred up-flow reactor with surface continuous oxygen-limited aeration was used to realize partial nitritation by controlling the dissolved oxygen (DO) (0.4-0.5mg/l) of the reactor. In this study, an ASBR reactor was inoculated with ANAMMOX activated sludge with denitrification properties. After 98 days of activity recovery, the total nitrogen removal rate reached 90%. The reactor was run to the 194th day, with the total nitrogen removal efficiency reaching 95% after increasing influent nitrogen concentration on the 99th day, and the two reactors were combined in series. Up to the 212th day, the influent NH4 +-N was 253.51mg / (l d), and the effluent NH4 +-N, NO2 −-N and NO3 −-N concentration were 1.67 mg / (l d), 1.18 mg / (l d) and 5.68mg / (l d) respectively. In addition the activated sludge of two reactors was also identified by 16S Rrna.
