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Effect of organic compounds on nitrite accumulation during the nitrification process for coking wastewater
Alternative TitleWater Sci. Technol.
Li, H. B.1; Cao, H. B.1; Li, Y. P.1; Zhang, Y.1; Liu, H. R.2
2010
Source PublicationWATER SCIENCE AND TECHNOLOGY
ISSN0273-1223
Volume62Issue:9Pages:2096-2105
AbstractCoking wastewater is one of the most toxic industrial effluents since it contains high concentrations of ammonia and toxic organic compounds. Nitrification might be upset by the inhibitory effect of organic compounds during the biological treatment of the wastewater. In this study, shortcut nitrification was obtained in a sequencing batch bioreactor (SBR) and the inhibitory effect of organic compounds on the nitrification was examined when temperature was 30 +/- 1 degrees C, pH was 7.0-8.5, and dissolved oxygen concentration was 2.0-3.0 mgL(-1). The inhibitory effect of organic compounds was presumed to be one of the main factors to obtain satisfactory nitrite accumulation. The effect of organic compounds on nitrification was examined in the SBR with initial inhibitor concentrations ranging from 0 to 80 mgL(-1), including phenol, pyrocatechol, resorcin, benzene, quinoline, pyridine and indole. The inhibitory effect became stronger with the increase in the concentration, and it was presumed to take place through a direct mechanism resulting from biological toxicity of the inhibitor itself. Furthermore, the inhibitory effect on ammonia oxidation was slighter than that on nitrite oxidation, and the nitrite accumulation ratio during the nitrification was determined by the difference between the reaction rates of above two processes.; Coking wastewater is one of the most toxic industrial effluents since it contains high concentrations of ammonia and toxic organic compounds. Nitrification might be upset by the inhibitory effect of organic compounds during the biological treatment of the wastewater. In this study, shortcut nitrification was obtained in a sequencing batch bioreactor (SBR) and the inhibitory effect of organic compounds on the nitrification was examined when temperature was 30 +/- 1 degrees C, pH was 7.0-8.5, and dissolved oxygen concentration was 2.0-3.0 mgL(-1). The inhibitory effect of organic compounds was presumed to be one of the main factors to obtain satisfactory nitrite accumulation. The effect of organic compounds on nitrification was examined in the SBR with initial inhibitor concentrations ranging from 0 to 80 mgL(-1), including phenol, pyrocatechol, resorcin, benzene, quinoline, pyridine and indole. The inhibitory effect became stronger with the increase in the concentration, and it was presumed to take place through a direct mechanism resulting from biological toxicity of the inhibitor itself. Furthermore, the inhibitory effect on ammonia oxidation was slighter than that on nitrite oxidation, and the nitrite accumulation ratio during the nitrification was determined by the difference between the reaction rates of above two processes.
KeywordCoking Wastewater Inhibitory Effect Nitrification Nitrite Accumulation Organic Compounds
SubtypeArticle
WOS HeadingsScience & Technology ; Technology ; Life Sciences & Biomedicine ; Physical Sciences
DOI10.2166/wst.2010.371
URL查看原文
Indexed BySCI
Language英语
WOS KeywordNITROGEN REMOVAL ; ACTIVATED-SLUDGE ; BIOFILM REACTOR ; NH3-N REMOVAL ; INHIBITION ; PHENOL ; SYSTEM ; COD
WOS Research AreaEngineering ; Environmental Sciences & Ecology ; Water Resources
WOS SubjectEngineering, Environmental ; Environmental Sciences ; Water Resources
WOS IDWOS:000284032600018
Citation statistics
Cited Times:11[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Version出版稿
Identifierhttp://ir.ipe.ac.cn/handle/122111/6309
Collection研究所(批量导入)
Affiliation1.Chinese Acad Sci, Inst Proc Engn, Key Lab Green Proc & Engn, Beijing 100190, Peoples R China
2.Angang Steel Co Ltd, Anshan 114000, Peoples R China
Recommended Citation
GB/T 7714
Li, H. B.,Cao, H. B.,Li, Y. P.,et al. Effect of organic compounds on nitrite accumulation during the nitrification process for coking wastewater[J]. WATER SCIENCE AND TECHNOLOGY,2010,62(9):2096-2105.
APA Li, H. B.,Cao, H. B.,Li, Y. P.,Zhang, Y.,&Liu, H. R..(2010).Effect of organic compounds on nitrite accumulation during the nitrification process for coking wastewater.WATER SCIENCE AND TECHNOLOGY,62(9),2096-2105.
MLA Li, H. B.,et al."Effect of organic compounds on nitrite accumulation during the nitrification process for coking wastewater".WATER SCIENCE AND TECHNOLOGY 62.9(2010):2096-2105.
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