Study on the removal of hormones from domestic wastewaters with lab-scale constructed wetlands with different substrates and flow directions

Melián, J.A. Herrera; Guedes-Alonso, Rayco; Borreguero-Fabelo, Alejandro; Santana‐Rodríguez, José Juan; Sosa‐Ferrera, Zoraida

doi:10.1007/s11356-017-9307-8

Cited by 29 publications

(5 citation statements)

References 48 publications

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“…Additionally, rice husk and organic mulch have been successfully employed in the removal of total nitrogen [9][10][11]. Moreover, organic substrates can increase the removal of micro-pollutants by sorption [12,13]. Denitrifying bioreactors are a particular case of organic-based CWS that have been used to reduce the nitrate concentration of different effluents.…”

Section: Introductionmentioning

confidence: 99%

Multistage Horizontal Subsurface Flow vs. Hybrid Constructed Wetlands for the Treatment of Raw Urban Wastewater

et al. 2020

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In this study, pilot-scale hybrid constructed wetlands (CWs) and multistage horizontal subsurface flow CWs (HF CWs) have been studied and compared for the treatment of raw urban wastewater. In the hybrid CWs, the first stage was a mulch-based horizontal subsurface flow CW and the second stage was a vertical subsurface flow CW (VF CW). The VF CWs were used to determine if sand could improve the performance of the hybrid CW with respect to the mulch. In the multistage HFs, mulch, gravel and sand were used as substrates. The effect of water height (HF10: 10 cm vs. HF40: 40 cm) and surface loading rate (SLR: 12 vs. 24 g Chemical Oxygen Demand (COD)/m2d) has been studied. The results show that the use of sand in the vertical flow stage of the hybrid CW did not improve the average performance. Additionally, the sand became clogged, while the mulch did not. The effect of water height on average pollutant removal was not determined but HF10 performed better regarding compliance with legal regulations. With a SLR of 12 g COD/m2d, removals of HF10 were: 79% for COD, 75% for NH4+-N, 53% for dissolved molybdate-reactive phosphate-P (DRP), 99% for turbidity and 99.998% for E. coli and total coliforms. When SLR was doubled, removals decreased for NH4+-N: 49%, DRP: −20%, E coli and total coliforms: 99.5–99.9%, but not for COD (85%) and turbidity (99%). Considering the obtained results and the simplicity of the construction and operation of HFs, HF10 would be the most suitable choice for the treatment of raw urban wastewater without clogging problems.

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Section: Introductionmentioning

confidence: 99%

Multistage Horizontal Subsurface Flow vs. Hybrid Constructed Wetlands for the Treatment of Raw Urban Wastewater

et al. 2020

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“…Constructed wetlands in combination with the use of plants are capable of removing conventional and emerging contaminants due to the interaction between plants and microorganisms (Garcia- Gorito et al 2017Gorito et al , 2022Herrera-Melian et al 2018;Osei et al 2019;Dan et al 2020;Kaur et al 2020;Hassan et al 2021;Chowdhury et al 2022;Patyal et al 2022;Sharma and Malaviya 2022). In many countries of the world, they are considered to be an effective alternative to conventional biological treatments for municipal wastewater treatment to treat suspended solids, chemical oxygen demand, biological oxygen demand, nutrients (nitrogen, phosphate) and metals, which is why they have developed strongly (Gorito et al 2017;Schultze-Nobre et al 2017).…”

Section: Alkylphenols Remediation In Constructed Wetlandsmentioning

confidence: 99%

Innovative technologies to remove alkylphenols from wastewater: a review

et al. 2022

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Alkylphenols and alkylphenol polyethoxylates are emerging hazardous contaminants due in particular to their endocrine-disrupting properties. These compounds originate from consumer products such as paints and latex paints, adhesives, inks, formulation of pesticides, paper industry, textile and leather industry, petroleum recovery chemicals, metal working fluids, personal care products, washing agents, cleaners, and detergents. Since classical wastewater treatments have not been designed to remove alkylphenols, these compounds end up polluting ecosystems. Here we review three advanced methods to remove alkylphenols and derivatives. First, innovative polymers, such as cyclodextrin polymers and molecularly imprinted polymers, allow to remove alkylphenols from effluents by adsorption. Second, biotechnologies such as microalgae, biodeg-radation in constructed wetlands and sequential anaerobic-aerobic digestion treatments. Third, advanced oxidation processes to degrade recalcitrant alkylphenols, e.g., ozone-carbon coupling, electrochemical degradation, photocatalysis, zero-valent iron-activated persulfate coupling, and catalytic ozonation.

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“…Because of its low porosity, sewage sludge can only reach a maximum temperature of 35 °C on its own. Herrera-Melián et al [81] studied removing hormones from the wastewater of a university campus. e content of hormones could affect the metabolism of aquatic animals.…”

Section: Sewage Sludge Compostingmentioning

confidence: 99%

Composting and Anaerobic Digestion of Food Waste and Sewage Sludge for Campus Sustainability: A Review

Yaser

Lamaming

Suali

et al. 2022

International Journal of Chemical Engineering

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Composting and anaerobic digestion have emerged as better options for managing food waste and sewage sludge at the campus level. This review highlights the characteristics of food waste and sewage sludge from various global higher education institutions. The composting and anaerobic digestion processes of food waste and sewage sludge will be reviewed and evaluated. Also, the adoption of composting and anaerobic digestion at various campus levels has been reviewed. The challenges and future direction, focusing on managing university campus composting and anaerobic digestion, are discussed as well. This review paper will significantly contribute to the understanding of the potential for managing and handling campus waste in a natural-friendly manner.

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Study on the removal of hormones from domestic wastewaters with lab-scale constructed wetlands with different substrates and flow directions

Cited by 29 publications

References 48 publications

Multistage Horizontal Subsurface Flow vs. Hybrid Constructed Wetlands for the Treatment of Raw Urban Wastewater

Multistage Horizontal Subsurface Flow vs. Hybrid Constructed Wetlands for the Treatment of Raw Urban Wastewater

Innovative technologies to remove alkylphenols from wastewater: a review

Composting and Anaerobic Digestion of Food Waste and Sewage Sludge for Campus Sustainability: A Review

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