Screening of Solid Waste as Filler Material for Constructed Wetlands

Mateus, Dina M. R.; Pinho, Henrique J. O.

doi:10.1088/1755-1315/182/1/012001

Cited by 12 publications

(10 citation statements)

References 11 publications

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“…Ten solid wastes (clay brick fragments, coal boiler slags, cork granulates, crushed eggshells, grape pomaces, rock limestone fragments, olive seeds, pine bark fragments, snail shells, and wood pellets) were evaluated as substrates for Constructed Wetlands by Mateus and Pinho [65]. For this reason, the authors performed physical characterisation, adsorption, and leaching tests.…”

Section: Substratementioning

confidence: 99%

Potential Use of Constructed Wetland Systems for Rural Sanitation and Wastewater Reuse in Agriculture in the Moroccan Context

et al. 2021

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Located in a semi-arid to arid region, Morocco is confronting increasing water scarcity challenges. In the circular economy paradigm, the reuse of treated wastewater in agriculture is currently considered a possible solution to mitigate water shortage and pollution problems. In recent years, Morocco has made significative progress in urban wastewater treatment under the National Wastewater Program (PNA). However, rural sanitation has undergone significant delays. Therefore, an alternative technology for wastewater treatment and reuse in rural areas is investigated in this review, considering the region’s economic, social, and regulatory characteristics. Constructed wetlands (CWs) are a simple, sustainable, and cost-effective technology that has yet to be fully explored in Morocco. CWs, indeed, appear to be suitable for the treatment and reuse of wastewater in remote rural areas if they can produce effluent that meets the standards of agricultural irrigation. In this review, 29 studies covering 16 countries and different types of wastewater were collected and studied to assess the treatment efficiency of different types of CWs under different design and operational parameters, as well as their potential application in agricultural reuse. The results demonstrated that the removal efficiency of conventional contamination such as organic matter and suspended solids is generally high. CWs also demonstrated a remarkable capacity to remove heavy metals and emerging contaminants such as pharmaceuticals, care products, etc. The removal of microbial contamination, on the other hand, is challenging, and does not satisfy the standards all the time. However, it can be improved using hybrid constructed wetlands or by adding polishing treatment. In addition, several studies reported that CWs managed to produce effluent that met the requirements of wastewater reuse in agriculture of different countries or organisations including Morocco.

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Section: Substratementioning

confidence: 99%

Potential Use of Constructed Wetland Systems for Rural Sanitation and Wastewater Reuse in Agriculture in the Moroccan Context

et al. 2021

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“…The publications summarized in Tables 1-4 present different methods to solve environmental problems through circular approaches and combining heterogeneous processes, i.e., by applying CE L principles. Among the papers proposing new circular approaches for WM, the majority of them propose solutions to generate valuable products (e.g., adsorption materials, cellulose, chemicals, biofuels, fertilizers and soil improvers from agro-forestry, and zootechnical and food waste) [97,99,[102][103][104][105][106]110,111,113,[117][118][119][120][121]124,131,133,135,141], recover precious nutrients [128,134,136,137], exploiting sustainable sources of energy [45,100,101,109,110,114,115,123,125], and eliminate residual waste [112,126,129,132,[138][139][140].…”

Section: Discussion and Future Challengesmentioning

confidence: 99%

From Circular Economy to Circular Ecology: A Review on the Solution of Environmental Problems through Circular Waste Management Approaches

Adami

Schiavon

2021

Sustainability

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(1) Background: The application of concepts linked to the circular economy (CE) has led to a sudden development of studies in numerous fields. However, the level of environmental sustainability of CE strategies could be improved and this topic deserves more attention by the scientific community. This research addresses this gap and aims at presenting a new concept, named circular ecology (CEL), and its application to the field of waste management. (2) Methods: The paper presents a literature review on the criticalities of CE and on examples of studies that implement the CEL principles. (3) Results: The review highlights that CEL principles are widely applied to several fields of waste management, showing promising opportunities to export the results to other geographical contexts. (4) Conclusions: If supported by governments, CEL approaches may allow solving multiple environmental problems at once, with clear economic, time, resources, and emission savings.

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“…The pilot-scale CW was developed under the Valorbio research project [41]. Details on the design and experimental setup of the modular-type pilot-scale CW, characteristics of the solid waste used as filling media, and the main results obtained are described elsewhere [42][43][44][45].…”

Section: Methodsmentioning

confidence: 99%

“…The CW is filled with four layers of solid waste, from bottom to top: 5 cm of fragmented residues of limestone rock; 10 cm of coal slag; 25 cm of cork granulates; and 10 cm of fragmented residues of limestone rock. This stratified layer combination of solid waste was optimized in previous works to beneficiate from the combined hydraulic properties and contributions to removing pollutants from wastewater [44,45].…”

Section: Wastewater Characterístics and Treatment Setupmentioning

confidence: 99%

Sustainable Production of Reclaimed Water by Constructed Wetlands for Combined Irrigation and Microalgae Cultivation Applications

Pinho

Mateus

2021

Hydrology

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Considering the increasing pressure on freshwater resources due to the constant increase in water consumption and insufficient wastewater control and treatment, recovering wastewater is a path to overcoming water scarcity. The present work describes the potential of reusing treated wastewater (reclaimed water) for irrigation and production of microalgae biomass in an integrated way, through experimental evaluation of plant and microalgae growth, and creation of an application model. First, two parallel experiments were conducted to evaluate the use of reclaimed water produced by a constructed wetland filled with a mix of solid waste: the irrigation of a set of small pots filled with soil and planted with Tagetes patula L., and the cultivation of microalgae Chlorella sp. and a mixed microalgae population with predominant species of the genus Scenedesmus sp. in shaken flasks and tubular bubble column photobioreactors. Results indicated no negative effects of using the reclaimed water on the irrigated plants and in the cultivated microalgae. The growth indicators of plants irrigated with reclaimed water were not significantly different from plants irrigated with fertilized water. The growth indicators of the microalgae cultivated with reclaimed water are within the range of published data. Second, to apply the results to a case study, the seasonal variability of irrigation needs in an academic campus was used to propose a conceptual model for wastewater recovery. The simulation results of the model point to a positive combination of using reclaimed water for the irrigation of green spaces and microalgae production, supported by a water storage strategy. Water abstraction for irrigation purposes can be reduced by 89%, and 2074 kg dry weight microalgae biomass can be produced annually. Besides the need for future work to optimize the model and to add economical evaluation criteria, the model shows the potential to be applied to non-academic communities in the perspective of smarter and greener cities.

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Screening of Solid Waste as Filler Material for Constructed Wetlands

Cited by 12 publications

References 11 publications

Potential Use of Constructed Wetland Systems for Rural Sanitation and Wastewater Reuse in Agriculture in the Moroccan Context

Potential Use of Constructed Wetland Systems for Rural Sanitation and Wastewater Reuse in Agriculture in the Moroccan Context

From Circular Economy to Circular Ecology: A Review on the Solution of Environmental Problems through Circular Waste Management Approaches

Sustainable Production of Reclaimed Water by Constructed Wetlands for Combined Irrigation and Microalgae Cultivation Applications

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