TY - JOUR
T1 - Quantitative impact of influent characteristics on nitrogen removal via anammox and denitrification in a landfill bioreactor case
AU - Wang, Xiaoyuan
AU - Xie, Bing
AU - Zhang, Chaoqun
AU - Shen, Yiwen
AU - Lu, Jun
N1 - Publisher Copyright:
© 2016 Elsevier Ltd
PY - 2017/1/1
Y1 - 2017/1/1
N2 - In this paper, Quantitative Polymerase Chain Reaction (qPCR), Illumina MiSeq sequencing and 15N stable isotopic tracing methods were applied to study the effects of influent organic loading, BOD5/TN and NO2-N/NH4-N ratios on the combined nitrogen removal through denitrification and anammox. The results show that, the total nitrogen removal was above 90% at the optimum reaction condition: organic loading 0.04 kg/m3·day, BOD5/TN 0.2, and NO2-N/NH4-N 1.0. Approximately 9.43% of the nitrogen removal occurred through anammox process when BOD5/TN was 0.1, and increased to 21.46% when BOD5/TN was 0.2. The anammox accounted for 10% when NO2-N/NH4-N was 0.5, and that increased to 20.72% when NO2-N/NH4-N was 1.0–1.5. hzsA was directly proportional to the influent BOD5/TN. A positive correlation between BOD5/TN and anammox microorganisms existed. Similarly, there was a positive correlation between NO2-N/NH4-N and denitrification microorganisms. Therefore, it is feasible to regulate the influent to improve nitrogen removal efficiency.
AB - In this paper, Quantitative Polymerase Chain Reaction (qPCR), Illumina MiSeq sequencing and 15N stable isotopic tracing methods were applied to study the effects of influent organic loading, BOD5/TN and NO2-N/NH4-N ratios on the combined nitrogen removal through denitrification and anammox. The results show that, the total nitrogen removal was above 90% at the optimum reaction condition: organic loading 0.04 kg/m3·day, BOD5/TN 0.2, and NO2-N/NH4-N 1.0. Approximately 9.43% of the nitrogen removal occurred through anammox process when BOD5/TN was 0.1, and increased to 21.46% when BOD5/TN was 0.2. The anammox accounted for 10% when NO2-N/NH4-N was 0.5, and that increased to 20.72% when NO2-N/NH4-N was 1.0–1.5. hzsA was directly proportional to the influent BOD5/TN. A positive correlation between BOD5/TN and anammox microorganisms existed. Similarly, there was a positive correlation between NO2-N/NH4-N and denitrification microorganisms. Therefore, it is feasible to regulate the influent to improve nitrogen removal efficiency.
KW - Anammox
KW - Denitrification
KW - Functional microbial
KW - Influent characteristics
KW - Organic loading
UR - https://www.scopus.com/pages/publications/85006287874
U2 - 10.1016/j.biortech.2016.11.078
DO - 10.1016/j.biortech.2016.11.078
M3 - 文章
C2 - 27916499
AN - SCOPUS:85006287874
SN - 0960-8524
VL - 224
SP - 130
EP - 139
JO - Bioresource Technology
JF - Bioresource Technology
ER -
