Evaluating the performance of horizontal sub-surface flow constructed wetlands: A case study from southern India

Jamwal, Priyanka; Raj, Anjali V.; Raveendran, Lakshmi; Shirin, Shahana; Connelly, Stephanie; Yeluripati, Jagadeesh; Richards, Samia; Rao, Lakshminarayana; Helliwell, Rachel; Tamburini, Matteo

doi:10.1016/j.ecoleng.2021.106170

Cited by 29 publications

(14 citation statements)

References 47 publications

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“…These units have gained attention owing to their easy operation, cost effectiveness, and efficiency (Datta et al, 2016; Fang et al, 2017; Tilak et al, 2017). Successful application of constructed wetlands has been reported for wastewater treatment, heavy metals removal, and antibiotic resistant genes removal using various plant species, such as Canna , Eichhornia , Phragmites , Typha , and Ageratum (Alvarez et al, 2017; Barancheshme & Munir, 2018; Jamwal et al, 2021; Juwarkar et al, 1995; Kumar et al, 2016; Rampuria et al, 2021; Rana et al, 2011; Tilak et al, 2017). In the present study, the utility of constructed wetlands was assessed for the treatment of wastewater generated from a hospital in Ujjain.…”

Section: Introductionmentioning

confidence: 99%

Utility of constructed wetlands for treatment of hospital effluent and antibiotic resistant bacteria in resource limited settings: A case study in Ujjain, India

Parashar

Singh²,

Purohit

et al. 2022

Water Environment Research

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Section: Introductionmentioning

confidence: 99%

Utility of constructed wetlands for treatment of hospital effluent and antibiotic resistant bacteria in resource limited settings: A case study in Ujjain, India

Parashar

Singh²,

Purohit

et al. 2022

Water Environment Research

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“…On the other hand, the COD removal rate in the planted system (H3FCW) exceeded 65%, while it was only 47.97 ± 3.24% in the unplanted unit (H1FCW). Several studies comparing the COD removal efficiency of planted and unplanted systems have revealed that planted CWs outperform unplanted CWs [ 54 , 55 , 56 ]. In addition, the study carried out by Xu and Cui [ 57 ] showed that the substrate interception and adsorption of organic compounds in planted systems were more extensive than those in the unplanted systems .…”

Section: Resultsmentioning

confidence: 99%

Efficient Wastewater Treatment and Removal of Bisphenol A and Diclofenac in Mesocosm Flow Constructed Wetlands Using Granulated Cork as Emerged Substrate

Bessadok

Kraiem

Arous

et al. 2023

Toxics

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Constructed wetlands (CWs) are considered as low-cost and energy-efficient wastewater treatment systems. Media selection is one of the essential technical keys for their implementation. The purpose of this work was essentially to evaluate the removal efficiency of organic pollution and nitrogen from municipal wastewater (MWW) using different selected media (gravel/gravel amended with granulated cork) in mesocosm horizontal flow constructed wetlands (HFCWs). The results showed that the highest chemical oxygen demand (COD) and ammonium nitrogen removal of 80.53% and 42%, respectively, were recorded in the units filled with gravel amended with cork. The influence of macrophytes (Phragmites australis and Typha angustifolia) was studied and both species showed steeper efficiencies. The system was operated under different hydraulic retention times (HRTs) i.e., 6 h, 24 h, 30 h, and 48 h. The obtained results revealed that the COD removal efficiency was significantly enhanced by up to 38% counter to the ammonium rates when HRT was increased from 6 h to 48 h. Moreover, the removal efficiency of two endocrine-disrupting compounds (EDCs) namely, bisphenol A (BPA) and diclofenac (DCF) was investigated in two selected HFCWs, at 48 h HRT. The achieved results proved the high capacity of cork for BPA and DCF removal with the removal rates of 90.95% and 89.66%, respectively. The results confirmed the role of these engineered systems, especially for EDC removal, which should be further explored.

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“…There is an emerging awareness of the value provided by biological treatment processes employing CWs [ 160 , 161 ]. CWs have a long history of being utilized for pollutant removal, and research has shown them to be capable of significant reductions of organic pollutants, nutrients [ 162 ], heavy metals [ 163 , 164 ], antibiotics, and emergent contaminants such as ARG/ARB [ 32 , 165 ].…”

Section: Review Findingsmentioning

confidence: 99%

Performance Efficiency of Conventional Treatment Plants and Constructed Wetlands towards Reduction of Antibiotic Resistance

Hazra

Durso

2022

Antibiotics

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Domestic and industrial wastewater discharges harbor rich bacterial communities, including both pathogenic and commensal organisms that are antibiotic-resistant (AR). AR pathogens pose a potential threat to human and animal health. In wastewater treatment plants (WWTP), bacteria encounter environments suitable for horizontal gene transfer, providing an opportunity for bacterial cells to acquire new antibiotic-resistant genes. With many entry points to environmental components, especially water and soil, WWTPs are considered a critical control point for antibiotic resistance. The primary and secondary units of conventional WWTPs are not designed for the reduction of resistant microbes. Constructed wetlands (CWs) are viable wastewater treatment options with the potential for mitigating AR bacteria, their genes, pathogens, and general pollutants. Encouraging performance for the removal of AR (2–4 logs) has highlighted the applicability of CW on fields. Their low cost of construction, operation and maintenance makes them well suited for applications across the globe, especially in developing and low-income countries. The present review highlights a better understanding of the performance efficiency of conventional treatment plants and CWs for the elimination/reduction of AR from wastewater. They are viable alternatives that can be used for secondary/tertiary treatment or effluent polishing in combination with WWTP or in a decentralized manner.

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Evaluating the performance of horizontal sub-surface flow constructed wetlands: A case study from southern India

Cited by 29 publications

References 47 publications

Utility of constructed wetlands for treatment of hospital effluent and antibiotic resistant bacteria in resource limited settings: A case study in Ujjain, India

Utility of constructed wetlands for treatment of hospital effluent and antibiotic resistant bacteria in resource limited settings: A case study in Ujjain, India

Efficient Wastewater Treatment and Removal of Bisphenol A and Diclofenac in Mesocosm Flow Constructed Wetlands Using Granulated Cork as Emerged Substrate

Performance Efficiency of Conventional Treatment Plants and Constructed Wetlands towards Reduction of Antibiotic Resistance

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