https://scholars.lib.ntu.edu.tw/handle/123456789/407972
標題: | Integrated simultaneous desulfurization and denitrification (ISDD) process at various COD/sulfate ratios | 作者: | Chen C. Liu L. Lee D.-J. Guo W. Wang A. Xu X. Zhou X. Wu D. Ren N. |
關鍵字: | Carbon to sulfate ratio; Denitrification; Denitrifiers; Desulfurization; Sulfate-reducing bacteria | 公開日期: | 2014 | 卷: | 155 | 起(迄)頁: | 161-169 | 來源出版物: | Bioresource Technology | 摘要: | The integrated simultaneous desulfurization and denitrification (ISDD) is a novel treatment process to handle sulfate and nitrate-laden wastewaters of high loadings. This study experimentally explored the effect of COD/SO42- ratio on the performance of ISDD process, particularly considering the complex interactions between sulfate-reducing bacteria (SRB), heterotrophic denitrifiers (hNRB) and autotrophic denitrifiers (aNRB). There existed an optimal COD/SO42- ratio (=1.5:1 in the present study) to reach 100% SO42- and NO3- removals and 42.6% S0 recovery. At COD/SO42-=1.5:1, the functional strains could form granules with high retention in the ISDD reactor. The microbial community analysis identified the SRB, hNRB and aNRB in the studied system, whose shifts correlated well with the noted ISDD performance change at different COD/SO42- ratio. Interactions between different groups of bacteria and the possible strategy to enhance the ISDD performance were discussed. © 2013 Elsevier Ltd. |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/407972 | ISSN: | 09608524 | DOI: | 10.1016/j.biortech.2013.12.067 | SDG/關鍵字: | Bacteria; Desulfurization; Nitrogen removal; Sulfur compounds; Wastewater treatment; Denitrifiers; Functional strain; Heterotrophic denitrifiers; Microbial community analysis; Simultaneous desulfurization and denitrification; Sulfate ratio; Sulfate reducing bacteria; Treatment process; Denitrification; nitrate; sulfate; nitric acid derivative; primer DNA; sewage; sulfate; waste water; water pollutant; article; autotrophic denitrifier; autotrophy; chemical oxygen demand; community structure; denaturing gradient gel electrophoresis; denitrification; desulfurization; heterotrophic denitrifier; heterotrophy; integrated simultaneous desulfurization and denitrification; microbial community; performance; priority journal; reactor; sulfate reducing bacterium; waste water; analysis; biochemical oxygen demand; bioreactor; chemistry; denitrification; genetics; isolation and purification; microbial consortium; microbiology; procedures; sewage; water management; water pollutant; Biological Oxygen Demand Analysis; Bioreactors; Denitrification; DNA Primers; Microbial Consortia; Nitrates; Sewage; Sulfates; Waste Water; Water Pollutants, Chemical; Water Purification |
顯示於: | 化學工程學系 |
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