Transformation of erythromycin during secondary effluent soil aquifer recharging：Removal contribution and degradation path

Erythromycin（ERY）,a widely used antibiotic,has recently been detected in municipal secondary effluents and poses serious threats to human health during wastewater reusing.In this study,the removal,fate,and degradation pathway of ERY in secondary effluent during soil aquifer treatment was evaluated v...

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Published in:Journal of environmental sciences (China) 2017, Vol.51 (1), p.173-180
Main Authors: Wei, Liangliang, Qin, Kena, Zhao, Ningbo, Noguera, Daniel R., Qiu, Wei, Zhao, Qingliang, Kong, Xiangjuan, Zhang, Weixian, Kabutey, Felix Tetteh
Format: Article
Language:English
Subjects:
Degradation pathway
DOM
Environmental Monitoring
Erythromycin
Erythromycin - analysis
Erythromycin - chemistry
Fate
Groundwater - chemistry
Models, Chemical
Soil - chemistry
Soil aquifer treatment
Waste Water
Water Pollutants, Chemical - analysis
Water Pollutants, Chemical - chemistry
二级出水
土壤含水层处理
城市污水厂
废水再利用
红霉素
补给
转化
降解途径
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Summary:Erythromycin（ERY）,a widely used antibiotic,has recently been detected in municipal secondary effluents and poses serious threats to human health during wastewater reusing.In this study,the removal,fate,and degradation pathway of ERY in secondary effluent during soil aquifer treatment was evaluated via laboratory-scale SAT tests.Up to a 92.9%reduction of ERY in synthetic secondary effluent was observed in 1.0 m depth column system,which decreased to 64.7%when recharged with wastewater treatment plant secondary effluent.XRD-fractionation results demonstrated that the transphilic acid and hydrophobic acid fractions in secondary effluent compete for the adsorption sites of the packed soil and lead to a declined ERY removal.Moreover,aerobic biodegradation was the predominant role for ERY removal,contributing more than 60%reduction of ERY when recharged with synthetic secondary effluent.Destruction of 14-member macrocyclic lactone ring and breakdown of two cyclic sugars（L-cladinose and D-desosamine） were main removal pathways for ERY degradation,and produced six new intermediates.
ISSN:1001-0742
1878-7320
DOI:10.1016/j.jes.2016.08.004