Effect of organic compounds on nitrite accumulation during the nitrification process for coking wastewater

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	Effect of organic compounds on nitrite accumulation during the nitrification process for coking wastewater
	Li, H. B.1; Cao, H. B.1; Li, Y. P.1; Zhang, Y.1; Liu, H. R.2
刊名	WATER SCIENCE AND TECHNOLOGY
	2010
卷号	62 期号:9 页码:2096-2105
关键词	coking wastewater inhibitory effect nitrification nitrite accumulation organic compounds
ISSN号	0273-1223
其他题名	Water Sci. Technol.
中文摘要	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.
英文摘要	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.
WOS标题词	Science & Technology ; Technology ; Life Sciences & Biomedicine ; Physical Sciences
类目[WOS]	Engineering, Environmental ; Environmental Sciences ; Water Resources
研究领域[WOS]	Engineering ; Environmental Sciences & Ecology ; Water Resources
关键词[WOS]	NITROGEN REMOVAL ; ACTIVATED-SLUDGE ; BIOFILM REACTOR ; NH3-N REMOVAL ; INHIBITION ; PHENOL ; SYSTEM ; COD
收录类别	SCI
原文出处	://WOS:000284032600018
语种	英语
WOS记录号	WOS:000284032600018
公开日期	2013-11-28
内容类型	期刊论文
版本	出版稿
源URL	[http://ir.ipe.ac.cn/handle/122111/6309]
专题	过程工程研究所_研究所（批量导入）
作者单位	1.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
推荐引用方式 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.