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Partial nitritation treatment of underground brine waste with high ammonium and salt content
- Source :
- Journal of bioscience and bioengineering. 108(4)
- Publication Year :
- 2009
-
Abstract
- Underground brine waste containing high concentrations of ammonium and with a salinity of 3% is usually generated during the production of methane gas and iodine in the gas field of Chiba Prefecture, Japan. In this study, one swim-bed reactor, packed with a novel acrylic fiber biomass carrier (Biofringe), was applied to the partial nitritation treatment of this kind of underground brine waste. A stable nitrite production rate of 1.6 kg NO(2)-N m(-3) d(-1) was obtained under a nitrogen loading rate of 3.0 kg-N m(-3) d(-1), at a pH of 7.5 and a temperature of 25 degrees C. Nitrate production was negligible and the effluent NO(2)-N/NO(x)-N ratio was above 98% due to the successful inhibition of nitrite-oxidizing bacterial activity. Free ammonia was considered to be the main factor for inhibiting the activity of nitrite-oxidizing bacteria. A microbial community shift was demonstrated by 16S rRNA analysis, and it was shown that the ammonium-oxidizing bacteria became the predominant species after successful nitrite accumulation was observed.
- Subjects :
- Inorganic chemistry
chemistry.chemical_element
Bioengineering
Sodium Chloride
complex mixtures
Applied Microbiology and Biotechnology
Waste Disposal, Fluid
Water Purification
chemistry.chemical_compound
Ammonia
Nitrate
RNA, Ribosomal, 16S
Ammonium
Nitrite
Effluent
Nitrites
Nitrates
Bacteria
Nitrogen
Quaternary Ammonium Compounds
Kinetics
RNA, Bacterial
Brine
chemistry
Anammox
Environmental chemistry
Salts
Oxidation-Reduction
Biotechnology
Subjects
Details
- ISSN :
- 13474421
- Volume :
- 108
- Issue :
- 4
- Database :
- OpenAIRE
- Journal :
- Journal of bioscience and bioengineering
- Accession number :
- edsair.doi.dedup.....ed747699cce6c1894177737293485032