Removal of antibiotics and antibiotic resistance genes from domestic sewage by constructed wetlands: Optimization of wetland substrates and hydraulic loading

Chen, Jun; Wei, Xiaodong; Liu, You-Sheng; Ying, Guang‐Guo; Liu, Shuangshuang; He, Liang-Ying; Su, Haijun; Hu, Li‐Xin; Chen, Fanrong; Yang, Yongqiang

doi:10.1016/j.scitotenv.2016.04.176

Cited by 226 publications

(60 citation statements)

References 60 publications

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“…The substrates of 6 mesocosm-scale CWs were zeolite (the grain size of zeolite is 2-3 cm, and the void fraction is 44.7%) based on the optimization results of our previous study (Chen et al, 2016 being pumped to the mesocosm-scale CWs. The hydraulic loading rates (HLRs) of the CW systems were 20 cm/d according to our previous study (Chen et al, 2016).…”

Section: Setup Of the Mesocosm-scale Constructed Wetlandsmentioning

confidence: 99%

“…The hydraulic loading rates (HLRs) of the CW systems were 20 cm/d according to our previous study (Chen et al, 2016). All 6 mesocosm-scale CWs had been stably operated for 300 days before sampling.…”

Section: Setup Of the Mesocosm-scale Constructed Wetlandsmentioning

confidence: 99%

“…However, the exact contributions by different removal mechanisms depend on wetland design and characteristics of pollutants themselves. Our previous study (Chen et al, 2016) optimized wetland substrate and hydraulic loading for the removal of antibiotics and ARGs. As emerging contaminants with completely different properties, the fate of antibiotics and ARGs in different CWs requires to be investigated further in terms of flow configuration and plant species in wetland design.…”

Section: Introductionmentioning

confidence: 99%

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Removal of antibiotics and antibiotic resistance genes from domestic sewage by constructed wetlands: Effect of flow configuration and plant species

Chen

Ying

Wei

et al. 2016

Science of The Total Environment

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166

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Section: Setup Of the Mesocosm-scale Constructed Wetlandsmentioning

confidence: 99%

Section: Setup Of the Mesocosm-scale Constructed Wetlandsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Removal of antibiotics and antibiotic resistance genes from domestic sewage by constructed wetlands: Effect of flow configuration and plant species

Chen

Ying

Wei

et al. 2016

Science of The Total Environment

Self Cite

166

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“…Constructed wetlands (CWs) are artificial wetlands which are designed and constructed to manipulate the natural processes to treat wastewater [1]. Macrophytes play several roles in engineered ecosystems helping to stabilize the surface of the beds, provide good conditions for physical filtration and insulate the surface against coldness [2][3][4].…”

Section: Introductionmentioning

confidence: 99%

A Comparison of the Oxygen Release from Roots of Thalia and Pontederia in Constructed Wetland Wastewater Treatment Systems

Dong¹,

Huang²

2017

Proceedings of the 2016 International Conference on Biological Engineering and Pharmacy (BEP 2016)

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Abstract-To investigate the ability of oxygen release from roots of different vegetation, and explain the mechanism. This paper tested the variation of oxygen release rate from roots of Thalia and Pontederia using a titanium (Ш) citrate buffer. The results shows that oxygen release rates with the same condition were higher for Thalia. This difference is caused by the special structure of Thalia. The aerenchyma of Thalia is good at the oxygen transport. The results of this paper can help us to choose better vegetation species for wastewater treatment.

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“…The mechanisms for removal of these pollutants are microbial degradation, microbial transformation, soil-adsorption, plant uptake, and degradation by plants (phytodegradation) 14) . Some recent studies have assessed the removal of TC and/or tet genes from wastewater using different types of CWs including subsurface horizontal flow CW 15), 16) , vertical flow CW 15), 17) , vertical up-flow CW 18) , integrated CW 19) . Vertical subsurface flow CWs showed the highly-efficient removal of TC and tet genes from wastewaters.…”

Section: Introductionmentioning

confidence: 99%

Removal of Tetracycline and Tetracycline Resistance Genes from Municipal Wastewater in Microcosm Fill-and-Drain Constructed Wetlands

Hien

Toyama

Mori

2017

Japanese J. Wat. Treat. Biol.

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This study investigated the capacity of fill-and-drain constructed wetlands (CWs) for removal of a common antibiotic, tetracycline (TC), and tetracycline resistance genes (tet genes) from municipal wastewater. TC (230 µg/L) containing wastewater was treated in the CWs planted or non-planted with common reed (Phragmites australis). TC was removed significantly in the planted (95.4 % removal) and non-planted (87.2% removal) CWs with a treatment time of 1 day. Both CWs, with longer treatment times, completely removed TC from the wastewater. Adsorption of TC to soil materials might be the major mechanism of removal by the CWs over the short-term. Biodegradation of TC by native microorganisms present in wastewater also contributed in TC removal in CWs. In addition, the planted CWs showed higher TC removal efficiency than did the non-planted ones. The presence of five tet genes (tetC, tetM, tetO, tetQ, and tetW) was monitored in the planted CWs. The influent wastewater had 1.7 × 10 2 -2 × 10 4 copies/mL of these genes. All the tet genes were completely removed from wastewater by the planted CWs with 1 day treatment. In 28 days sequencing batch experiments using planted and non-planted CWs treating TC containing wastewater (250 µg/L) with treatment time of 2 days, the planted CWs completely and repeatedly removed TC from the wastewater. TC removal by nonplanted CWs was 98.9-99.8%, and low concentration of TC persisted in the effluents. The presence of plants provided the effective TC removal in the CWs for a long-term. The planted CWs also maintained about 3 log reduction of tet genes from wastewater during the sequencing batch experiments. These results suggest the potential of planted CWs for use in the removal TC and tet genes from municipal wastewater.

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Removal of antibiotics and antibiotic resistance genes from domestic sewage by constructed wetlands: Optimization of wetland substrates and hydraulic loading

Cited by 226 publications

References 60 publications

Removal of antibiotics and antibiotic resistance genes from domestic sewage by constructed wetlands: Effect of flow configuration and plant species

Removal of antibiotics and antibiotic resistance genes from domestic sewage by constructed wetlands: Effect of flow configuration and plant species

A Comparison of the Oxygen Release from Roots of Thalia and Pontederia in Constructed Wetland Wastewater Treatment Systems

Removal of Tetracycline and Tetracycline Resistance Genes from Municipal Wastewater in Microcosm Fill-and-Drain Constructed Wetlands

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