Halophytes as vertical-flow constructed wetland vegetation for domestic wastewater treatment

Fountoulakis, M.S.; Sabathianakis, G.; Kritsotakis, I.; Kabourakis, Emmanouil; Manios, Thrassyvoulos

doi:10.1016/j.scitotenv.2017.01.090

Cited by 65 publications

(17 citation statements)

References 63 publications

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“…Plant types (i.e. macrophytes and halophytes) affected pollutant removal rates (Fountoulakis et al, 2017). Some research stated the positive effect of plants (Morari and Giardini, 2009;Toscano et al, 2015).…”

Section: Improved Single-stage Constructed Wetlandsmentioning

confidence: 99%

Potential of constructed wetland treatment systems for agricultural wastewater reuse under the EU framework

Nan

Lavrnić

Toscano

2020

Journal of Environmental Management

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Wastewater reuse was recognized as one of the solutions for the problems regarding increasing water scarcity and pollution of water resources. Constructed wetlands (CWs) are a sustainable and costeffective technology for wastewater treatment. If able to produce effluent of a needed quality, they can be a valuable addition for wastewater reuse schemes. This review studied 39 treatment systems based on CWs, and it assessed their characteristics and performance on pollutants removal. Moreover, their potential to reach the future European Union standards for agricultural wastewater reuse was evaluated. The results showed that the combination of CWs with additional techniques (e.g. UV treatment, anaerobic reactors) can further increase their performance and provide better removal efficiencies in comparison with conventional HSSF and VSSF CWs. Particularly, hybrid systems showed a better removal of organic matter and bacterial indicators than single-stage CWs. Most of the systems considered could reach some of the limits for agricultural reuse in the terms of biochemical oxygen demand and total suspended solids, although improved single-stage CWs and hybrid systems were able to meet stricter requirements. However, that was often not the case with Escherichia coli and therefore it is recommended to combine them with disinfection technologies in order to reach the levels required for agricultural reuse.

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Section: Improved Single-stage Constructed Wetlandsmentioning

confidence: 99%

Potential of constructed wetland treatment systems for agricultural wastewater reuse under the EU framework

Nan

Lavrnić

Toscano

2020

Journal of Environmental Management

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“…These bacteria draw their energy necessary for oxidation from organic matter such as carbonaceous substrates (Kadlec and Wallace, 2008). The presence of plant may be involved in the removal of indicator and pathogenic microorganisms in VF-CW 2 and HF-CW 2 due to their ability to increase filtration and sedimentation into the bed by their roots, to operate like a supporter of microbial community development keen on the root systems (Fountoulakis et al, 2017), to supply oxygen transfer from aerial tissues to the rhizosphere (Button et al, 2015), to produce bactericidal compounds (Avelar et al, 2014;Alufasi et al, 2017). Several studies have indicated the effect of plants on E. coli or FC concentration reduction (El Hamouri et al, 2007;Tunçsiper et al, 2012;Carballeira et al, 2016).…”

Section: Influent Characteristic and The Efficiency Of Pollutant Removalmentioning

confidence: 99%

Removal processes of indicator organisms and opportunistic pathogens in an anaerobic digester‐constructed wetland system

Khouja

Mhiri

Ouzari

et al. 2019

Water & Environment J

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Factors affecting the removal of opportunistic pathogens were evaluated in a hybrid constructed wetland (CW 2) treating rural wastewater. The correlations between the bacterial population and the environmental variables showed that bacteria discharge was the result of abiotic factors change such as temperature (T), electrical conductivity (EC), dissolved oxygen (DO), organic matter and nutrient availability, as well as biotic factors like antagonism and competition with the native microbial community. However, the contribution of each factor depends on bacteria nature, on the influence of wetland design, availability of oxygen, season, presence of plant, and wastewater composition. Higher removals rates of biochemical oxygen demand BOD 5 (94.64 ± 3.92%), chemical oxygen demand COD (90.91 ± 6.81%), total suspended solids TSS (98.05 ± 1.18%), nitrogen (total Kjeldahl nitrogen TKN (81.78 ± 11.01%), ammonia nitrogen NH + 4 (92.17 ± 6.56%), orthophosphate PO 3− 4 (79.73 ± 10.41%) and bacteria (>98%) were observed in CW 2 .

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“…This uptake did not result in a decreased salinity of the effluent water due to strong evapotranspiration (Freedman, Gross, Shelef, Rachmilevitch, & Arnon, 2014). Many recent studies are searching for new halophytes that take up salts without losing their ability for the uptake of nutrients and heavy metals (Fountoulakis, Sabathianakis, Kritsotakis, Kabourakis, & Manios, 2017;Jesus, Cassoni, Danko, Fi uza, & Borges, 2017).…”

Section: Potential Limitations Of Cw Treatment Prior To Desalinationmentioning

confidence: 99%

A review on the removal of conditioning chemicals from cooling tower water in constructed wetlands

Wagner

Parsons

Rijnaarts

et al. 2018

Critical Reviews in Environmental Science and Technology

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Large volumes of freshwater are used globally for cooling towers. The reuse of discharged cooling tower water in cooling towers itself could mitigate freshwater scarcity problems. Prior to its reuse, the cooling tower blowdown has to be desalinated. However, physicochemical desalination techniques are hampered by conditioning chemicals (CC) that are added to the cooling tower water circuit to prevent corrosion, mineral scaling, and biofouling and can damage physicochemical desalination equipment. The potential of constructed wetlands (CWs) for the cost-effective removal of these CC prior to desalination is discussed in this review. The characteristics of CWs that determine their suitability for the removal of CC from cooling tower blowdown are elucidated, such as multiple removal pathways working simultaneously. In addition, specific challenges for the design of a constructed wetland for cooling tower blowdown treatment are reviewed, such as configuration options, the toxicity of CC, and the formation and removal of harmful byproducts.

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Halophytes as vertical-flow constructed wetland vegetation for domestic wastewater treatment

Cited by 65 publications

References 63 publications

Potential of constructed wetland treatment systems for agricultural wastewater reuse under the EU framework

Potential of constructed wetland treatment systems for agricultural wastewater reuse under the EU framework

Removal processes of indicator organisms and opportunistic pathogens in an anaerobic digester‐constructed wetland system

A review on the removal of conditioning chemicals from cooling tower water in constructed wetlands

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