Highly efficient and low-energy nitrogen removal of sludge reduction liquid by coupling denitrification- partial nitrification-Anammox in an innovative auto-recycling integration device with different partitions.
作者： Xiang Li , Xin-wei Tan , Yan Yuan , Yong Huang , Bo-lin Li
DOI: 10.1016/J.BIORTECH.2020.122880
关键词: Nitrosomonas 、 Nitrification 、 Pulp and paper industry 、 Anammox 、 Denitrification 、 Nitrogen 、 Effluent 、 Organic matter 、 Microorganism 、 Chemistry
摘要: Abstract The denitrification (DN), partial nitrification (PN) and Anammox processes were coupled in an auto-recycling integration device to remove nitrogen from the supernatant of sludge reduction pretreatment. removal performance effect organic matter concentration on transformation discussed. results showed that DN, PN are well total (TN) rate reached 0.85 kg/(m3·d). pre-DN process can achieve NO3−-N produced by back-end PN-Anammox without need reflux pump drive. When influent NH4+-N was approximately 400 mg/L, effluent TN less than 20 mg/L. fluctuation led changes system, best ratio CODbio/TN 0.7–0.9. Nitrosomonas Candidatus Brocadia played important roles as main functional microorganisms Anammox, respectively.
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