Emission of Nitrous Oxide in Nitrification and Denitrification Process of Municipal Wastewater.
نویسندگان
چکیده
منابع مشابه
Nitrous Oxide Nitrification and Denitrification
The isotopic signatures of N and O in N2O emitted from tropical soils vary both spatially and temporally, leading to large uncertainty in the overall tropical source signature and thereby limiting the utility of isotopes in constraining the global N2O budget. Determining the reasons for spatial and temporal variations in isotope signatures requires that we know the isotope enrichment factors fo...
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This study attempts to elucidate the emission sources and mechanisms of nitrous oxide (N2O) during simultaneous nitrification and denitrification (SND) process under oxygen-limiting condition. The results indicated that N2O emitted during low-oxygen SND process was 0.8±0.1 mgN/gMLSS, accounting for 7.7% of the nitrogen input. This was much higher than the reported results from conventional nitr...
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Nitrous oxide (N(2)O) is a potent greenhouse gas that contributes to climate change and stratospheric ozone destruction. Anthropogenic nitrogen (N) loading to river networks is a potentially important source of N(2)O via microbial denitrification that converts N to N(2)O and dinitrogen (N(2)). The fraction of denitrified N that escapes as N(2)O rather than N(2) (i.e., the N(2)O yield) is an imp...
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Intensification of agricultural systems has resulted in remarkable increases in productivity. However in grazed systems only about 10-20% of the N ingested by grazing animals is retained in animal products. The reminder is returned in excreta to the paddock in a spatially non-uniform fashion as dung and urine and then either accumulates in the soil or is lost via leaching or gaseous emissions. ...
متن کاملModelling of nitrous oxide emissions from an A2/O process treating municipal wastewater
Nitrous oxide (N2O) is a greenhouse gas significantly contributing to the greenhouse effect and potentially generated during the biological nutrient removal in wastewater treatment plants (WWTPs). The 3 possible microbial pathways for the N2O production are the incomplete hydroxylamine oxidation, the nitrifier denitrification and the heterotrophic denitrification. The first two, both followed b...
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ژورنال
عنوان ژورنال: Journal of Japan Society on Water Environment
سال: 2000
ISSN: 0916-8958,1881-3690
DOI: 10.2965/jswe.23.803