NDLI: Biological treatment of actual petrochemical wastewater using anaerobic/anoxic/oxic process and the microbial diversity analysis

Content Provider	Springer Nature Link
Author	Ding, Pengyuan Chu, Libing Wang, Jianlong
Copyright Year	2016
Abstract	A novel process integrating anaerobic hydrolysis-acidification (HA) and anoxic/oxic (A/O) reactors was developed to treat the actual petrochemical wastewater, which was operated for more than 8 months, the removal efficiency of COD and NH4 +-N was monitored, and the microbial community was analyzed. The results showed that the effluent concentrations were maintained at around 99 and 1.3 mg/L, with the removal efficiency of 70.6 and 95.4 %, respectively at a total hydraulic retention time (HRT) of 20 h. The major pollutants in the influent were identified as hydrocarbons, aldehydes, heterocyclic matters, amines, alcohols, phenols, ketones, etc. by GC-MS analysis, while only heterocyclic compounds, ketones, and esters were detected in the effluent after HA-A/O treatment. Bacteria belonging to phyla Chloroflexi, Proteobacteria, and Bacteroidetes were highly enriched in the system. The predominant genera in HA, anoxic, and oxic tanks were Anaerolineaceae uncultured and Desulfobacter, Blastocatella and Anaerolineaceae uncultured, Saprospiraceae uncultured and Nitrosomonadaceae uncultured, respectively. The sulfate-reducing bacteria Desulfobacter, Desulfofustis and Desulfomicrobium were detected only in HA reactor. The ammonium-oxidizing bacteria Nitrosomonadaceae and Nitrosomonas and nitrite-oxidizing bacteria Nitrospira were highly enriched in A/O reactor, which is consistent with the good nitrification performance.
Starting Page	10193
Ending Page	10202
Page Count	10
File Format	PDF
ISSN	01757598
Journal	Applied Microbiology and Biotechnology
Volume Number	100
Issue Number	23
e-ISSN	14320614
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2016-10-05
Publisher Place	Berlin, Heidelberg
Access Restriction	Subscribed
Subject Keyword	Hydrolysis Acidification Anoxic/oxic reactor Petrochemical wastewater Pyrosequencing Microbiology Microbial Genetics and Genomics Biotechnology
Content Type	Text
Resource Type	Article
Subject	Medicine Applied Microbiology and Biotechnology Biotechnology

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