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Bio-desulfurization and denitrification by anaerobicanoxic process for the treatment of wastewater from flue gas washing
Song, Ziyu1,3; Zhou, Xuemei2; Li, Yuguang2; Yang, Maohua1; Xing, Jianmin1
2013
Source PublicationWATER SCIENCE AND TECHNOLOGY
ISSN0273-1223
Volume67Issue:9Pages:2042-2049
AbstractFor amine-based carbon dioxide capture, nitrogen oxides and sulfur oxides were the main pollutants that had a negative effect on the regeneration of solvent. Before carbon dioxide capture, the sulfur oxides in flue gas should be removed by the method of calcium salt, and then washed by alkaline solution to eliminate the residual nitrogen oxides and sulfur oxides. The washing wastewater containing sulfate and nitrate needs to be treated. In this study, a novel anaerobic-anoxic process was built up for the treatment of this washing wastewater. Nitrate was reduced to nitrogen by denitrifying bacteria. Sulfate was firstly reduced to sulfide by sulfate reducing bacteria, and then selectively oxidized to element sulfur by sulfide oxidizing bacteria. The treated liquid could be reused as absorption after the adjustment of pH value. The performances of this bioprocess were investigated under various pH values and S/N ratios. It was found that the optimal pH value of influent was 6.0, the percentages of denitrification and sulfate reducing could reach 90 and 89%, respectively. Seventy-six percent of sulfate was transformed into element sulfur. Nitrate significantly had a negative effect on sulfate reduction above 10 mM. As 20 mM nitrate, the sulfate reducing percentage would drop to 67%. These results showed that the anaerobic-anoxic process was feasible for the treatment of flue gas washing wastewater. It would be prospectively applied to other wastewater with the higher ratio of SO42-/NO3-.
KeywordAnaerobic-anoxic Process Flue Gas Washing Wastewater Nitrogen Oxides Simultaneous Desulfurization And Denitrification Sulfur Oxides
SubtypeArticle
WOS HeadingsScience & Technology ; Technology ; Life Sciences & Biomedicine ; Physical Sciences
DOI10.2166/wst.2013.088
Indexed BySCI
Language英语
WOS KeywordBIOLOGICAL SULFIDE OXIDATION ; BIOREACTOR ; REMOVAL ; REACTOR ; NITRATE ; OPTIMIZATION ; INHIBITION ; LIMESTONE ; RECOVERY ; DIOXIDE
WOS Research AreaEngineering ; Environmental Sciences & Ecology ; Water Resources
WOS SubjectEngineering, Environmental ; Environmental Sciences ; Water Resources
WOS IDWOS:000319256300020
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/13337
Collection研究所(批量导入)
Affiliation1.Chinese Acad Sci, Inst Proc Engn, Natl Key Lab Biochem Engn, Beijing, Peoples R China
2.Minist Civil Affairs, Inst 101, Beijing 100070, Peoples R China
3.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Song, Ziyu,Zhou, Xuemei,Li, Yuguang,et al. Bio-desulfurization and denitrification by anaerobicanoxic process for the treatment of wastewater from flue gas washing[J]. WATER SCIENCE AND TECHNOLOGY,2013,67(9):2042-2049.
APA Song, Ziyu,Zhou, Xuemei,Li, Yuguang,Yang, Maohua,&Xing, Jianmin.(2013).Bio-desulfurization and denitrification by anaerobicanoxic process for the treatment of wastewater from flue gas washing.WATER SCIENCE AND TECHNOLOGY,67(9),2042-2049.
MLA Song, Ziyu,et al."Bio-desulfurization and denitrification by anaerobicanoxic process for the treatment of wastewater from flue gas washing".WATER SCIENCE AND TECHNOLOGY 67.9(2013):2042-2049.
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