Abstract：
:Three sequencing batch reactors (SBRs) were used to investigate the influence of pulse frequencies on the partial nitrification (PN) process in this study. At a total aeration time of 6 min each hour, the aerated frequencies of R1, R2 and R3 were 6, 3 and 2 time h-1. During the steady period (117-143d), the nitrite accumulation rates (NARs) were 90.80%, 90.71% and 90.23% in R1, R2 and R3, respectively, indicating a steady nitritation was acquired. Activity measurements of the sludge samples taken at day 138 showed the activity of nitrite oxidating bacteria (NOB) was 0, indicating NOBs were successfully suppressed. The ratio of NO2--N to NH4+-N in the effluent of R3 was 1.35, which most closely matched the influent of Anammox process. However, the energy efficiency evaluation showed that R1 had the highest actual oxygen transfer efficiency (AOTE) and dynamical efficiency (DE).
journal_name
Bioresour Technoljournal_title
Bioresource technologyauthors
Wang S,Deng L,Zheng D,Wang L,Zhang Y,Yang H,Jiang Y,Huang Fdoi
10.1016/j.biortech.2018.04.084subject
Has Abstractpub_date
2018-08-01 00:00:00pages
271-277eissn
0960-8524issn
1873-2976pii
S0960-8524(18)30607-2journal_volume
262pub_type
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