Clogging reduction and removal of hormone residues with laboratory-scale vertical flow organic-based filter and hybrid wetland

Melián, J.A. Herrera; Torres-Padrón, M. E.; Betancor-Abreu, A.; Sosa‐Ferrera, Zoraida; Santana‐Rodríguez, José Juan; Martín-González, M. A.; Araña, J.; Guedes-Alonso, Rayco

doi:10.1007/s13762-013-0495-6

Cited by 9 publications

(1 citation statement)

References 38 publications

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“…Additionally, the first unit was located above the other ones to favor the aerobic degradation of the retained solids and to minimize clogging and ponding [21]. The palm mulch allows for significant loads of Total Suspended Solids (TSS) and Chemical Oxygen Demand (COD), without clogging [22]. The mulch was obtained by trituration of dry branches of the Canarian palm tree (Phoenix canariensis) which is very abundant in the zone.…”

Section: Methodsmentioning

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: Methodsmentioning

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: An Emerging Green Technology for the Treatment of Industrial Wastewaters

Kumar

Gopikumar

Uan

et al. 2020

Emerging Eco-Friendly Green Technologies for Wastewater Treatment

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Analytical tools employed to determine pharmaceutical compounds in wastewaters after application of advanced oxidation processes

Afonso‐Olivares

Montesdeoca-Esponda

Sosa‐Ferrera

et al. 2016

Environ Sci Pollut Res

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Today, the presence of contaminants in the environment is a topic of interest for society in general and for the scientific community in particular. A very large amount of different chemical substances reaches the environment after passing through wastewater treatment plants without being eliminated. This is due to the inefficiency of conventional removal processes and the lack of government regulations. The list of compounds entering treatment plants is gradually becoming longer and more varied because most of these compounds come from pharmaceuticals, hormones or personal care products, which are increasingly used by modern society. As a result of this increase in compound variety, to address these emerging pollutants, the development of new and more efficient removal technologies is needed. Different advanced oxidation processes (AOPs), especially photochemical AOPs, have been proposed as supplements to traditional treatments for the elimination of pollutants, showing significant advantages over the use of conventional methods alone. This work aims to review the analytical methodologies employed for the analysis of pharmaceutical compounds from wastewater in studies in which advanced oxidation processes are applied. Due to the low concentrations of these substances in wastewater, mass spectrometry detectors are usually chosen to meet the low detection limits and identification power required. Specifically, time-of-flight detectors are required to analyse the by-products.

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Clogging reduction and removal of hormone residues with laboratory-scale vertical flow organic-based filter and hybrid wetland

Cited by 9 publications

References 38 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

Constructed Wetlands: An Emerging Green Technology for the Treatment of Industrial Wastewaters

Analytical tools employed to determine pharmaceutical compounds in wastewaters after application of advanced oxidation processes

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