Start-up of simultaneous partial nitrification, anammox and denitrification (SNAD) process in sequencing batch biofilm reactor using novel biomass carriers

Bioresource Technology
Achlesh DavereyJih-Gaw Lin

Abstract

Simultaneous partial nitrification, anammox and denitrification (SNAD) process was started-up in a 2.5L sequencing batch biofilm reactor (SBBR) using novel biomass carriers. The SNAD process took only 51d for start-up at nitrogen loading rate (NLR) and organic loading rate (OLR) of 120 and 60g/m(3)-d, respectively. Long-term stable operation of SNAD process was observed at NLR and OLR of 360 and 180g/m(3)-d with average total nitrogen and COD removal efficiencies of >88% and >90%, respectively. The values of conversion ratio [Formula: see text] remained below 0.11 after the start-up period, which further confirmed the long-term stability of SNAD process. Results of polymerase chain reaction (PCR), qualitative PCR, and scanning electron microscopic (SEM) analysis of sludge samples confirmed the co-existence and enrichment of AOB, anammox bacteria and denitrifying bacteria in the reactor and biofilm formation on to the carriers.

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Citations

Apr 3, 2016·Journal of Hazardous Materials·Xiaojing WangFenglin Yang
Oct 12, 2016·Chemosphere·Ryu SutoMiyoko Waki
Oct 29, 2018·Environmental Science and Pollution Research International·Wendong Tao
Apr 13, 2017·Water Science and Technology : a Journal of the International Association on Water Pollution Research·Zhaoming ZhengJingyue Yang
Jul 16, 2020·Environmental Science and Pollution Research International·Yaqi XieNana Lu
Aug 15, 2018·International Journal of Environmental Research and Public Health·Hamidi Abdul AzizYung-Tse Hung
Jan 25, 2021·Journal of Environmental Management·A H JagabaA Noor

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