Abstract：
:The anammox (anaerobic ammonium oxidation) process has attracted much attention for its cost-saving. However, excess nitrate is usually produced which should be further treated. In this study, an innovative process combined anammox with partial denitrification (nitrate→nitrite) was proposed for advanced nitrogen removal in two sequencing batch reactors (SBRs). The nitrate produced in anammox-SBR (ASBR) was fed into partial denitrification-SBR (DSBR), in which the nitrate was reduced to nitrite, and then removed by backflow of the nitrite to ASBR for secondary anammox process. Results showed that ∼80% nitrate in the effluent of previous anammox was converted to nitrite in DSBR. And the maximum nitrogen removal efficiency (NRE) of 94.06% was obtained with total nitrogen (TN) in the effluent of 10.98 mg/L in average. It indicated that desired effluent quality could be achieved, and the advanced nitrogen removal performance was attributed to the successful achievement of partial denitrification.
journal_name
Bioresour Technoljournal_title
Bioresource technologyauthors
Du R,Peng Y,Cao S,Wang S,Wu Cdoi
10.1016/j.biortech.2014.12.043subject
Has Abstractpub_date
2015-03-01 00:00:00pages
497-504eissn
0960-8524issn
1873-2976pii
S0960-8524(14)01788-Xjournal_volume
179pub_type
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