{Reference Type}: Journal Article
{Title}: Quantitative impact of influent characteristics on nitrogen removal via anammox and denitrification in a landfill bioreactor case.
{Author}: Wang X;Xie B;Zhang C;Shen Y;Lu J;
{Journal}: Bioresour Technol
{Volume}: 224
{Issue}: 0
{Year}: Jan 2017
{Factor}: 11.889
{DOI}: 10.1016/j.biortech.2016.11.078
{Abstract}: 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 0.04kg/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.