Abstract：
:Heterotrophic nitrification-aerobic denitrification (HN-AD) has advantages over the traditional nitrogen removal process when removing multiple types of nitrogen in wastewater treatment. Acinetobacter tandoii MZ-5, which is capable of HN-AD, was isolated from the sediment of a polluted river for the first time. It used NH4+-N, NO2--N and NO3--N as sole nitrogen sources with maximum removal rates of 2.28, 1.18 and 1.04 mg L-1h-1, respectively. Simultaneous nitrification and denitrification were observed when using mixed N sources and NH4+-N was preferentially utilized. High nitrogen removal efficiencies (>90%) were achieved under the following conditions: C/N ratio 11-18, pH 6-8, 25-30 °C and dissolved oxygen 7.35-7.66 mg L-1. Strain MZ-5 was effective at treating wastewater from landfill leachate treatment plants, with NH4+-N, NO3--N and total nitrogen (TN) removal efficiencies of 99.28%, 44.85% and 45.31%, respectively. Thus, strain MZ-5 may be a good candidate for wastewater treatment.
journal_name
Bioresour Technoljournal_title
Bioresource technologyauthors
Ouyang L,Wang K,Liu X,Wong MH,Hu Z,Chen H,Yang X,Li Sdoi
10.1016/j.biortech.2020.123888subject
Has Abstractpub_date
2020-11-01 00:00:00pages
123888eissn
0960-8524issn
1873-2976pii
S0960-8524(20)31160-3journal_volume
315pub_type
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