A novel integrative performance evaluation of constructed wetland on removal of viable bacterial cells and related pathogenic, virulent and multi-drug resistant genes from wastewater systems

Donde, Oscar Omondi; Makindi, Stanley M.; Tian, Cuicui; Tian, Yingying; Hong, Pei; Cai, Qijia; Yang, Tiantian; Wang, Chunbo; Wu, Xingqiang; Xiao, Baihua

doi:10.1016/j.jwpe.2019.101060

Cited by 7 publications

(4 citation statements)

References 36 publications

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“…Vegetation acts as the main trapping and retention points for most contaminants. Studies have continued to detect a high concentration of emerging contaminants such as resistant genes within the root systems of most constructed wetland vegetations [11,32].…”

Section: Vegetationmentioning

confidence: 99%

“…There is yet no consensus on the optimal design of wetland systems, nor is there much information on their long-term performance. Furthermore, its ability and potential to eliminate emerging contaminants such as resistant genes have not been fully realized [32].…”

Section: Merits and Demerits Of Constructed Wetlands In Waste Handlingmentioning

confidence: 99%

“…The recognition that the environment could serve as a source for resistance genes to human pathogens has spurred interest in investigating the distribution of resistance genes in various environments to better understand the process [10,32]. Wastewater and wastewater treatment plants such as constructed wetlands can act as reservoirs and environmental suppliers of antibiotic resistance through filtration and load of resistant genes into the aquatic ecosystems [13].…”

Section: Constructed Wetlands and Drug-resistant Bacteria And Relatedmentioning

confidence: 99%

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Constructed Wetlands in Wastewater Treatment and Challenges of Emerging Resistant Genes Filtration and Reloading

Omondi¹,

Navalia²

2021

Inland Waters - Dynamics and Ecology

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A wetland is a unique and distinct ecosystem that is flooded by water, either permanently or seasonally, where oxygen-free processes prevail, and the primary distinctive factor of wetlands from other landforms or water bodies is the occurrence of adaptive vegetation of aquatic plants, characteristic to the unique hydric soil. A constructed wetland is an artificial shallow basin filled with substrate, usually soil or gravel, and planted with vegetation that has tolerance to saturated conditions. As much as the use of constructed wetland has been recommended in the treatment of various forms of wastewater, the system efficiency is a factor of very many natural and artificial factors, with the emerging pollutants and contaminants such as resistant genes being the most complicated contaminants to eliminate through the system. Indeed, the emerging pollutants in forms of antibiotic resistant genes (ARGs) have remained prevalent in aquatic environments such as wetlands that receive ARG-loaded sewage. Therefore, this chapter covers a discussion on constructed wetlands in wastewater treatment and challenges of emerging contaminants, such as resistant genes filtration and reloading mechanisms, and provides recommendation for the proper handling and removal of such pollutants from the wetlands' functional system.

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Section: Vegetationmentioning

confidence: 99%

Section: Merits and Demerits Of Constructed Wetlands In Waste Handlingmentioning

confidence: 99%

Section: Constructed Wetlands and Drug-resistant Bacteria And Relatedmentioning

confidence: 99%

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Constructed Wetlands in Wastewater Treatment and Challenges of Emerging Resistant Genes Filtration and Reloading

Omondi¹,

Navalia²

2021

Inland Waters - Dynamics and Ecology

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“…Compared with constructed wetlands, algae-based systems have been widely studied with regard to bacteria removal (Donde at al., 2020). The processes involved in bacterial decay for this type of systems are completely different of those that show up in wetlands.…”

Section: Introductionmentioning

confidence: 99%

Comparison of Contaminants Removal Efficiencies in Wastewater Using Constructed Wetlands of Single and Two Stages

Cifuentes,

Rivera,

Paiz

et al. 2023

Rev. AIDIS ing. cienc. ambient.

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Constructed wetlands are green technologies, nature-based solutions, that use phytoremediation for the treatment of wastewater studied in domestic, industrial, and agricultural uses and products such as hydrocarbons and some emerging pollutants. The objective is to analyze the efficiency of the constructed wetlands for the removal of heavy metals, nutrients such as phosphorus, and nitrogen in wastewater treatment. This study presents the results of contaminant removal from two types of constructed wetlands; single-stage and two-stage, which determine their efficiency. The removal of COD, BOD, phosphorus, fats, nitrogen, solids and others, showed similar efficiencies for each plant, with removal ranges between 16% and 95% relative to each pollutant analyzed. As a complement, the concentration of heavy chromium VI, cadmium, and total iron were reduced and analized thlrough the UV-VIS spectrophotometric method, which from three absorbance measurements for each metal, with wavelengths of 540 nm, 228 nm, 8 nm, and 510 nm, respectively, efficiencies of 62% and 85% were found for chromium VI removal; 43% and 53% removal for cadmium; 37% and 53% removal for total iron, results according to single-stage and two-stage plants.

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Functions of constructed wetland animals in water environment protection – A critical review

Long

Wang

et al. 2021

Science of The Total Environment

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A novel integrative performance evaluation of constructed wetland on removal of viable bacterial cells and related pathogenic, virulent and multi-drug resistant genes from wastewater systems

Cited by 7 publications

References 36 publications

Constructed Wetlands in Wastewater Treatment and Challenges of Emerging Resistant Genes Filtration and Reloading

Constructed Wetlands in Wastewater Treatment and Challenges of Emerging Resistant Genes Filtration and Reloading

Comparison of Contaminants Removal Efficiencies in Wastewater Using Constructed Wetlands of Single and Two Stages

Functions of constructed wetland animals in water environment protection – A critical review

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