Assessment of treatment efficiency of constructed wetlands in East Ukraine

Vergeles, Yuriy; Vystavna, Yuliya; Ishchenko, Andrey N.; Rybalka, I.O.; Marchand, Lilian; Stolberg, Felix

doi:10.1016/j.ecoleng.2015.06.020

Cited by 34 publications

(8 citation statements)

References 37 publications

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“…Low-cost technologies such as constructed wetland (CW) utilize the phytoremediation capacity of specific plant species, in combination with physical screening and sedimentation of suspended solids (Machado et al 2017). The aerenchyma tissue (Vymazal 2001), present in macrophytes such as Typha latifolia and Canna indica, facilitate the transfer of atmospheric oxygen to the root zones, thus creating an ideal micro-environment for nitrification activities (Vergeles et al 2015). Studies have shown that the plant uptake contributes to about 5-15% of the total nutrient removal from the wastewater while the bulk of removal of pollutants takes place in the rhizosphere by the root zone microorganisms (Becerra-Castro et al 2012).…”

Section: Introductionmentioning

confidence: 99%

Constructed wetland for improved wastewater management and increased water use efficiency in resource scarce SAT villages: a case study from Kothapally village, in India

Datta

Singh

Raja

et al. 2021

International Journal of Phytoremediation

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Evaluation a field-scale of constructed wetland (CW) for the treatment of rural wastewater (WW), in resource-scarce semi-arid tropic (SAT) villages, to provide improved wastewater management and increased water use efficiency, was the main objective of this study. A CW was commissioned in Kothapally village of Telangana to treat the wastewater generated from 100 households. The CW was vegetated with Typha latifolia and Canna indica. Average COD, sulfate and inorganic nitrogen removal efficiencies observed were 65%, 60% and 67% respectively, for the study period (one year). Removal efficiency for total coliform was consistently above 80%. The treated wastewater was stored in a farm pond and was utilized for irrigation in the nearby agricultural fields (0.6 ha). This perennial source of water, helped the nearby farmers to cultivate two additional crops, chickpea during rabi and sweetcorn during summer. The assured availability of water reduced their vulnerability to dry spells during the kharif by providing means for lifesaving irrigation. The biomass harvested from the constructed wetland was used as fodder for the livestock. A net additional income of Rs.70,000 ($US$1,000) was realized by the farmers using the treated wastewater for cultivation. Similar constructed wetland-based wastewater management system can be scaled up across water scarce semi-arid tropics. Novelty statement Field-scale performance evaluation of constructed wetland based wastewater treatment in a semiarid tropic village is scarce in the literature. The work presented gives a feasibility assessment for this technology critical for its wide-scale application to augment rural wastewater management in resource poor villages.

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Section: Introductionmentioning

confidence: 99%

Constructed wetland for improved wastewater management and increased water use efficiency in resource scarce SAT villages: a case study from Kothapally village, in India

Datta

Singh

Raja

et al. 2021

International Journal of Phytoremediation

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“…There is a wide variety of wastewater treatment systems, from the most sophisticated and modern ones that go at the forefront of technology, to the most artisanal and simple replicated systems of nature [18]; which obtain energy from natural sources, such as aquatic plants [12]. The process of wastewater purification by using aquatic plants or floating macrophytes has been imposed on conventional technology treatments [17]. Natural treatments carried out by unconventional purification systems have demonstrated high rates of efficiency in wastewater treatment [5].…”

Section: Introductionmentioning

confidence: 99%

Optimization of the Operation of a Municipal Wastewater Treatment Plant with Hydrocotyle Ranunculoides

Quispe¹,

Soto²,

Ingaruca³

et al. 2019

J. Ecol. Eng.

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The objective of the study was to optimize the operation of the municipal wastewater treatment plant (WWTP) of the Sicaya district with Hydrocotyle ranunculoides. The relative growth rate of the macrophyte was determined, in addition to the relationship between the population growth area and the final weight according to the number of days elapsed. Medium fences were implemented and the tributary and effluent of the WWTP were characterized physicochemically and microbiologically. The results of the characterization corresponding to the tributary were as follows: 616 mg of TSS/L, 109.2 mg of BOD 5 /L, 305.4 mg of COD/L, 30.3 mg of oils and fats/L and 3 500 000 NMP of thermotolerant coliforms/100 ml. Owing to the implementation of two medium grids, large suspended solids were retained. The highest efficiency of COD removal with respect to the growth area of H. ranunculoides (2 226.96 m 2) was 81.53%. While the efficiency of removal of thermotolerant coliforms was 79.2% at a water temperature of 12.32°C. Using the operational optimization model in the WWTP with H. ranunculoides, an area of 3 291.67 m 2 of macrophyte population growth was achieved with a removal efficiency of 93.71% COD and an area of 3 591.67m 2 to remove 79.95% of the thermotolerant coliforms at a temperature of 13°C.

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“…Phytoremediation is commonly practiced in various types of constructed wetlands, such as (i) surface flow wetlands, (ii) horizontal subsurface flow wetlands, (iii) vertical subsurface flow wetlands, and (iv) hybrid systems. The advantages of constructed wetlands are their ability to remove nutrients, pathogenic microorganisms, persistent organic pollutants, xenobiotic substances and trace elements from industrial and domestic wastewater [12].…”

Section: Introductionmentioning

confidence: 99%

Kinetic studies using a linear regression analysis for a sorption phenomenon of 17a-methyltestosterone by Salvinia cucullata in an active plant reactor

Adnan

Thanasupsin

2016

Environmental Engineering Research

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The aim of this study was to investigate the removal efficiency of 17α-methyltestosterone (MT) from aqueous solution by Salvinia cucullata Roxb. ex Bory in an active plant-based reactor with a specific focus on linear regression analysis for the sorption phenomena of MT onto the plant roots. A high performance liquid chromatographic method using UV detection (245 nm) was used to analyse the samples. The batch experiments of the active plant reactor (APR) were established to investigate the ability of Salvinia cucullata to remove MT from the liquid phase. The results revealed that 40% and 60% removal of MT from the liquid phase was observed at 5 min. and at 4 h, respectively. Salvinia cucullata can effectively remove MT from the aqueous solution in APRs. Kinetic studies revealed that the sorption phenomena of MT by Salvinia is best described using a linearized pseudo-second order model. Based on the kinetic parameters, it is likely that during the first 4 h of the contact (t = 0 to t = 4 h) sorption is the major driving mechanism of the disappearance of MT from aqueous solutions. However, at higher MT concentrations, diffusivity of MT has a significant effect on the migration of MT from the bulk stream to the root surface. The isotherm analysis revealed that the sorption kinetics favourably followed pseudo second-order. The results of isotherm analysis have indicated that the sorption of MT onto the root surfaces of Salvinia cucullata was favourable and almost irreversible.

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Assessment of treatment efficiency of constructed wetlands in East Ukraine

Cited by 34 publications

References 37 publications

Constructed wetland for improved wastewater management and increased water use efficiency in resource scarce SAT villages: a case study from Kothapally village, in India

Constructed wetland for improved wastewater management and increased water use efficiency in resource scarce SAT villages: a case study from Kothapally village, in India

Optimization of the Operation of a Municipal Wastewater Treatment Plant with Hydrocotyle Ranunculoides

Kinetic studies using a linear regression analysis for a sorption phenomenon of 17a-methyltestosterone by Salvinia cucullata in an active plant reactor

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