CAS OpenIR  > 湿法冶金清洁生产技术国家工程实验室
Innovative Biological Process for Treatment of Coking Wastewater
Li, Haibo1; Cao, Hongbin1; Li, Yuping1; Zhang, Yi1; Liu, Hanrui2; Cao, HB
2010-04-01
Source PublicationENVIRONMENTAL ENGINEERING SCIENCE
ISSN1092-8758
Volume27Issue:4Pages:313-322
AbstractCoking wastewater was treated by an A-O(1)-O(2) biofilm system composed of an anoxic bioreactor and two aerobic ones. To improve removal efficiency of organic pollutants, the anoxic bioreactor was used to investigate organic removal via anoxic process with enhanced denitrification, and the first aerobic bioreactor was used to test the feasibility of nitrogen removal via nitrite in an attached growth system. Concentrations of ammonium nitrogen (NH(4)(+)-N), phenols, and chemical oxygen demand (COD) in the wastewater ranged between 200 and 500, 250 and 350, and 1,700 and 2,200mg L(-1), respectively. Removal of organic pollutants through anoxic process was enhanced by raising NO(3)(-)-N/COD ratio in the influent of anoxic bioreactor. Removal efficiencies for total organic compounds of 17.84%, 41.78%, 82.63%, and 88.73% were obtained at NO(3)(-)-N/COD ratios of 1:10, 1:5, 1:3, and 1:2, respectively. Shortcut nitrification was obtained in the first aerobic bioreactor when dissolved oxygen was 2.0-3.0 mg L(-1) at 35 degrees C +/- 1 degrees C. Both ammonia oxidation ratio and nitrite accumulation ratio were maintained above 85%, with ammonia load ranging from 0.22 to 0.30 g NH(4)(+)-N (L day)(-1) by adjusting the hydraulic retention time and influent NH(4)(+)-N concentration. Gas chromatography/mass spectrometry analysis demonstrated that most of organic compounds were decomposed at the enhanced denitrification stage and the high removal efficiency of total organic compounds was obtained through the A-O(1)-O(2) process. This study was presumed to provide a better option for the treatment of coking wastewater.
KeywordCoking Wastewater Refractory Organic Compounds Denitrification No(3)(-)-n/cod Ratio Ammonia Shortcut Nitrification
SubtypeArticle
WOS HeadingsScience & Technology ; Technology ; Life Sciences & Biomedicine
DOI10.1089/ees.2009.0281
Indexed BySCI
Language英语
WOS KeywordSEQUENCING BATCH REACTORS ; ACTIVATED-SLUDGE ; NITROGEN REMOVAL ; DISSOLVED-OXYGEN ; NORTH-CAROLINA ; CARBON SOURCE ; DENITRIFICATION ; NITRIFICATION ; PH ; BIODEGRADATION
WOS Research AreaEngineering ; Environmental Sciences & Ecology
WOS SubjectEngineering, Environmental ; Environmental Sciences
WOS IDWOS:000276688100003
Citation statistics
Cited Times:23[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Version出版稿
Identifierhttp://ir.ipe.ac.cn/handle/122111/6171
Collection湿法冶金清洁生产技术国家工程实验室
Corresponding AuthorCao, HB
Affiliation1.Chinese Acad Sci, Inst Proc Engn, Key Lab Green Proc Engn, Beijing 100190, Peoples R China
2.Angang Steel Co Ltd, Anshan, Peoples R China
Recommended Citation
GB/T 7714
Li, Haibo,Cao, Hongbin,Li, Yuping,et al. Innovative Biological Process for Treatment of Coking Wastewater[J]. ENVIRONMENTAL ENGINEERING SCIENCE,2010,27(4):313-322.
APA Li, Haibo,Cao, Hongbin,Li, Yuping,Zhang, Yi,Liu, Hanrui,&Cao, HB.(2010).Innovative Biological Process for Treatment of Coking Wastewater.ENVIRONMENTAL ENGINEERING SCIENCE,27(4),313-322.
MLA Li, Haibo,et al."Innovative Biological Process for Treatment of Coking Wastewater".ENVIRONMENTAL ENGINEERING SCIENCE 27.4(2010):313-322.
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