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Electrochemical Oxidation Using BDD Anodes Combined with Biological Aerated Filter for Biotreated Coking Wastewater Treatment
Joint Authors
Wang, C. R.
Hou, Z. F.
Zhang, M. R.
Qi, J.
Wang, J.
Source
Issue
Vol. 2015, Issue 2015 (31 Dec. 2015), pp.1-7, 7 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2015-06-29
Country of Publication
Egypt
No. of Pages
7
Main Subjects
Abstract EN
Coking wastewater is characterized by poor biodegradability and high microorganism toxicity.
Thus, it is difficult to meet Grade I of Integrated Wastewater Discharge Standard of China by biological treatment technology; specifically, COD cannot meet above standard due to containing refractory organics.
A novel coupling reactor, electrochemical oxidation using BDD anodes and biological aerated filter (BAF), has been developed for carbon and nitrogen removal from biotreated coking wastewater, focusing on COD, BOD5, NH4+-N, and NO3--N removal on operation over 90 days with average effluent value of 91.3, 9.73, 0.62, and 13.34 mgL−1, respectively.
Average value of BOD5/COD and BOD5/NO3--N was enhanced from 0.05 to 0.27 and from 0.45 to 1.21 by electrochemical oxidation, respectively, with average energy consumption of 67.9 kWh kg−1 COD.
In addition, the refractory organics also were evidently mineralized in the unit based on the data of the three-dimensional fluorescence spectra.
Meanwhile, its effluent provided excellent substrate for biological denitrification in BAF.
At hydraulic retention time (HRT) of 13.08 h, about 12 mgL−1 NO3--N was depleted through denitrification, and it mainly occurred at top of 0.25 m height of BAF.
Therefore, it is feasible to apply the coupling reactor for biotreated coking wastewater treatment and achieve desirable effluent quality.
American Psychological Association (APA)
Wang, C. R.& Hou, Z. F.& Zhang, M. R.& Qi, J.& Wang, J.. 2015. Electrochemical Oxidation Using BDD Anodes Combined with Biological Aerated Filter for Biotreated Coking Wastewater Treatment. Journal of Chemistry،Vol. 2015, no. 2015, pp.1-7.
https://search.emarefa.net/detail/BIM-1067341
Modern Language Association (MLA)
Wang, C. R.…[et al.]. Electrochemical Oxidation Using BDD Anodes Combined with Biological Aerated Filter for Biotreated Coking Wastewater Treatment. Journal of Chemistry No. 2015 (2015), pp.1-7.
https://search.emarefa.net/detail/BIM-1067341
American Medical Association (AMA)
Wang, C. R.& Hou, Z. F.& Zhang, M. R.& Qi, J.& Wang, J.. Electrochemical Oxidation Using BDD Anodes Combined with Biological Aerated Filter for Biotreated Coking Wastewater Treatment. Journal of Chemistry. 2015. Vol. 2015, no. 2015, pp.1-7.
https://search.emarefa.net/detail/BIM-1067341
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1067341