Removal performance of antibiotics and antibiotic resistance genes in swine wastewater by integrated vertical-flow constructed wetlands with zeolite substrate

Du, Lidong; Zhao, Yuqing; Wang, Chuan; Zhang, Hongpei; Chen, Qianru; Xia, Zhang; Zhang, Liping; Wu, Junmei; Wu, Zhenbin; Zhou, Qiaohong

doi:10.1016/j.scitotenv.2020.137765

Cited by 74 publications

(33 citation statements)

References 59 publications

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“…Most of the studies showed that biodegradation and adsorption were the primary removal mechanisms of such chemicals from the CW system. In addition, studies have also looked into the removal performance for antibiotic resistance genes [83][84][85]. According to the study by Song et al (2018), the accumulation of antibiotics in different layers within the constructed wetland resulted in an abundance of ARGs with a positive correlation relationship [84].…”

Section: Lab-scalementioning

confidence: 99%

“…Chen et al 2019 study showed that while antibiotics' major removal mechanism was microbial degradation, ARGs main removal mechanisms were substrate sorption and biological reactions [83]. Another study investigated the comparisons of substrate medium by Du et al (2020) and observed better removal rates (>95%) for both antibiotics and ARGs when zeolite medium and plant (Arundo donax) were used [85].…”

Section: Lab-scalementioning

confidence: 99%

“…Besides CW types, studies have also investigated the impacts of different flow directions (up-flow vs. down-flow) [85,87] as well as the water level (high-level vs. lowlevel) [89]. Their results showed that the configuration of down-flow SSVF followed by up-flow SSVF provided best pollutant removal performance, however, they also expressed concern about accumulation of ARGs in the surface soil for down-flow SSVFs [85,87].…”

Section: Types and Design Of Cwsmentioning

confidence: 99%

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A Review on Constructed Treatment Wetlands for Removal of Pollutants in the Agricultural Runoff

et al. 2021

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Constructed wetland (CW) is a popular sustainable best management practice for treating different wastewaters. While there are many articles on the removal of pollutants from different wastewaters, a comprehensive and critical review on the removal of pollutants other than nutrients that occur in agricultural field runoff and wastewater from animal facilities, including pesticides, insecticides, veterinary medicine, and antimicrobial-resistant genes are currently unavailable. Consequently, this paper summarized recent findings on the occurrence of such pollutants in the agricultural runoff water, their removal by different wetlands (surface flow, subsurface horizontal flow, subsurface vertical flow, and hybrid), and removal mechanisms, and analyzed the factors that affect the removal. The information is then used to highlight the current research gaps and needs for resilient and sustainable treatment systems. Factors, including contaminant property, aeration, type, and design of CWs, hydraulic parameters, substrate medium, and vegetation, impact the removal performance of the CWs. Hydraulic loading of 10–30 cm/d and hydraulic retention of 6–8 days were found to be optimal for the removal of agricultural pollutants from wetlands. The pollutants in agricultural wastewater, excluding nutrients and sediment, and their treatment utilizing different nature-based solutions, such as wetlands, are understudied, implying the need for more of such studies. This study reinforced the notion that wetlands are effective for treating agricultural wastewater (removal >90%) but several research questions remain unanswered. More long-term research in the actual field utilizing environmentally relevant concentrations to seek actual impacts of weather, plants, substrates, hydrology, and other design parameters, such as aeration and layout of wetland cells on the removal of pollutants, are needed.

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Section: Lab-scalementioning

confidence: 99%

Section: Lab-scalementioning

confidence: 99%

Section: Types and Design Of Cwsmentioning

confidence: 99%

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A Review on Constructed Treatment Wetlands for Removal of Pollutants in the Agricultural Runoff

et al. 2021

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“…These systems exhibit a wide range of efficiencies (from 59 to almost 99%) depending on the flow configuration, plant species, flow types, and season [80,111]. The CWs promote persistent micropollutants adsorption from the support or substrate [112,113] and plant uptake [113] as mechanisms to reduce their occurrence in effluents after a wastewater treatment plant [64,105]. Additionally, biodegradation seems to play the main role in pollutant removal [64,114], together with sunlight photodegradation and plant adsorption mechanisms [115].…”

Section: Constructed Wetlandsmentioning

confidence: 99%

Treatment Processes for Microbial Resistance Mitigation: The Technological Contribution to Tackle the Problem of Antibiotic Resistance

Bairán

Rebollar-Pérez

Chávez

et al. 2020

IJERPH

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Advances generated in medicine, science, and technology have contributed to a better quality of life in recent years; however, antimicrobial resistance has also benefited from these advances, creating various environmental and health problems. Several determinants may explain the problem of antimicrobial resistance, such as wastewater treatment plants that represent a powerful agent for the promotion of antibiotic-resistant bacteria (ARB) and antibiotic resistance genes (ARG), and are an important factor in mitigating the problem. This article focuses on reviewing current technologies for ARB and ARG removal treatments, which include disinfection, constructed wetlands, advanced oxidation processes (AOP), anaerobic, aerobic, or combined treatments, and nanomaterial-based treatments. Some of these technologies are highly intensive, such as AOP; however, other technologies require long treatment times or high doses of oxidizing agents. From this review, it can be concluded that treatment technologies must be significantly enhanced before the environmental and heath problems associated with antimicrobial resistance can be effectively solved. In either case, it is necessary to achieve total removal of bacteria and genes to avoid the possibility of regrowth given by the favorable environmental conditions at treatment plant facilities.

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“…Compared with ordinary filter media, zeolite has greater application potential in the removal of ammonia nitrogen in wastewater. At present, many studies have found that zeolite has a good ammonia nitrogen removal performance, and there are different types reactors used zeolite as substrates or filters (Cheng et al 2018;Liu et al 2019;Kim et al 2019;Wang et al 2020c;Du et al 2020). Compared with other reactors, zeolite was more suitable as substrate for constructed wetlands and trickling filters.…”

Section: Overall Performance Of Nitrogen and Cod Removal With Different C/n Ratios In Microaerated Ztfmentioning

confidence: 99%

Nitrogen removal performance and bacterial communities in zeolite trickling filter under different influent C/N ratios

Liu

Tao

et al. 2020

Environ Sci Pollut Res

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In this study, the degradation performance of nutrients in zeolite trickling filter (ZTF) with different influent C/N ratios and aeration conditions was investigated. Microaeration was beneficial for enhancing NH 4 + -N removal performance. Due to the sufficient carbon source supply under a C/N ratio of 8, a high removal efficiency of NH 4 + -N and TN was simultaneously observed in ZTF. In addition, TN removal mainly occurred at the bottom, which might be explained by the sufficient nutrients available for bacteria to multiply in this zone. The abundant genera were Acinetobacter, Gemmobacter, Flavobacterium, and Pseudomonas, all of which are heterotrophic nitrification-aerobic denitrification (HNAD) bacteria. In addition, biofilm only slowed down the adsorption rate but did not significantly reduce the adsorption capacity of zeolite. Bio-zeolite had NH 4 + -N well adsorption capacity and bio-desorption capacity. Biological nitrogen removal performance was superior to physicochemical absorption of zeolite. The results suggested that the physicochemical of zeolite and biochemical reactions of microorganism coupling actions may be the main nitrogen transformation pathway in ZTF. Our research provides a reference for further understanding the nitrogen removal mechanism of zeolite bioreactors.

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Removal performance of antibiotics and antibiotic resistance genes in swine wastewater by integrated vertical-flow constructed wetlands with zeolite substrate

Cited by 74 publications

References 59 publications

A Review on Constructed Treatment Wetlands for Removal of Pollutants in the Agricultural Runoff

A Review on Constructed Treatment Wetlands for Removal of Pollutants in the Agricultural Runoff

Treatment Processes for Microbial Resistance Mitigation: The Technological Contribution to Tackle the Problem of Antibiotic Resistance

Nitrogen removal performance and bacterial communities in zeolite trickling filter under different influent C/N ratios

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