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Efficient treatment of alizarin yellow R contained wastewater in an electrostimulated anaerobic-oxic integrated system
Li, Zhi-Ling; Sun, Kai; Chen, Fan; Lin, Xiao-Qiu; Huang, Cong; Yao, Zheng; Chen, Dan; Xia, Ting; Xiao, Zhi-Xing; Wang, Ai-Jie
2020-06
Source PublicationENVIRONMENTAL RESEARCH
ISSN0013-9351
Volume185Pages:1-9
AbstractAn electrostimulated anaerobic-oxic integrated system was constructed for treating alizarin yellow R (AYR) containing wastewater. In electro-stimulated anaerobic unit, AYR decolorization efficiency improved from 51.2% to 96.6%. Two amination metabolites, p-phenylenediamine and 5-aminosalicylic acid, went through oxidation, ammonification and mineralization in oxic unit. Electro-stimulation promoted denitrification and COD removal efficiencies by 15.5% and 8.6%, respectively. A 20% improved nitrification efficiency was observed in oxic unit, due to elimination of AYR toxicity inhibition. No corrosion of heat-treated stainless steel occurred during the 60 days of continuous operation. Electrons sunk in denitrification and decolorization accounted for 34.4-36.8% of those released from COD removal, and 7.3% increase of removed nitrogen in nitrogenous compounds (AYR, nitrate and ammonia) was found. Electro-stimulated anaerobic unit predominated with fermentation and denitrification genera (Propionispira, Rhodocyclus, etc.) and aboundance of electro-active decolorization genus (Desulfovibrio, etc.) increased. Ammonia-oxidizing genus, Comamonas, was the most abundant in aerobic unit. Compared to the suspension, the electrostimulation could increased the abundance of electro-active genera in cathodic biofilm. This study revealed the feasibility of applying electro-stimulation and the conversion laws of nitrogenous organics in secondary bio-treatment system for treating toxic nitrogenous organics-contained wastewater.
Department中国科学院环境生物技术重点实验室
KeywordNitrogenous organics Anaerobic-oxic system Electro-stimulation Nitrate Ammonia Conversion pathway
Document Type期刊论文
Identifierhttp://ir.rcees.ac.cn/handle/311016/45162
Collection中国科学院环境生物技术重点实验室
Recommended Citation
GB/T 7714
Li, Zhi-Ling,Sun, Kai,Chen, Fan,et al. Efficient treatment of alizarin yellow R contained wastewater in an electrostimulated anaerobic-oxic integrated system[J]. ENVIRONMENTAL RESEARCH,2020,185:1-9.
APA Li, Zhi-Ling.,Sun, Kai.,Chen, Fan.,Lin, Xiao-Qiu.,Huang, Cong.,...&Wang, Ai-Jie.(2020).Efficient treatment of alizarin yellow R contained wastewater in an electrostimulated anaerobic-oxic integrated system.ENVIRONMENTAL RESEARCH,185,1-9.
MLA Li, Zhi-Ling,et al."Efficient treatment of alizarin yellow R contained wastewater in an electrostimulated anaerobic-oxic integrated system".ENVIRONMENTAL RESEARCH 185(2020):1-9.
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