Effluent quality and reuse potential of domestic wastewater treated in a pilot-scale hybrid constructed wetland system

Ayaz, Selma; Aktaş, Özgür; Akça, Lütfi; Findik, N.

doi:10.1016/j.jenvman.2015.03.042

Cited by 72 publications

(36 citation statements)

References 15 publications

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“…The first proposal calls for the promotion of constructed wetlands (CWs) as part of the hydrosocial cycle, with the aim to recognize, reflect, and represent water's broader social dimensions [140,141]. CWs are cost-effective treatments able to remove a broad range of contaminants (chemicals such as organic substances, metals and metalloids; and biological organisms, such as bacteria, viruses, and parasites) from municipal and domestic wastewater [142,143]. Although at a technical level WWTPs are effective systems to remove pollutants, they commonly require large capital investments as well as operation and maintenance costs [144].…”

Section: Discussionmentioning

confidence: 99%

Risk-Yuck Factor Nexus in Reclaimed Wastewater for Irrigation: Comparing Farmers’ Attitudes and Public Perception

Ricart

Rico

Palom

2019

Water

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The successes and failures of water reuse schemes are shaped by complex interrelationships between technological, economic, and socio-political factors. However, it has long been recognized that the main challenges to more effective water management are largely social rather than technical. This article reviews the recent literature (2007–2017) to analyze driving factors associated with farmers’ concerns and public perception of reclaimed wastewater for irrigation. The aim of the paper is to synthetize how both environmental and health risks and the yuck factor could be addressed in order to promote mutual understanding between farmers and the public. Results show: (1) how farmers and the public perceive environmental and health risks in a similar way, (2) how the yuck factor is more noticeable for the public than farmers, and (3) how constructed wetlands, reclaimed water exchange consortiums, product certification, and direct site visits to water reuse infrastructure could be promoted in order to foster understanding between farmers and the public. The article concludes by providing key research questions for managers and public authorities relating to how to focus on the study of technical and social issues related to water reuse.

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Section: Discussionmentioning

confidence: 99%

Risk-Yuck Factor Nexus in Reclaimed Wastewater for Irrigation: Comparing Farmers’ Attitudes and Public Perception

Ricart

Rico

Palom

2019

Water

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“…Finalmente, las remociones globales fueron de 21.2 % y de 34.4 %, respectivamente; con un incremento significativo en el segundo año (p < 0.05). En promedio, estos porcentajes de remoción son similares al 29 % logrado en un sistema híbrido HSSFH-HSSFV (ambos con 0.8 m de altura) plantados con Phragmites australis y con un medio filtrante compuesto de mármol, piedra caliza, arena y grava (Ayaz et al 2015).…”

Section: Humedal Híbrido II (Hssfh-hssfv)unclassified

Evaluación De Tres Sistemas De Humedales Híbridos a Escala Piloto Para La Remoción De Nitrógeno

Bojorges

Razo

Urquieta

et al. 2017

Rev. Int. Contam. Ambie.

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Palabras clave: nitrógeno amoniacal, nitrógeno orgánico, nitrato, humedales verticales, Canna indica, Strelitzia reginae RESUMENEn este estudio se evaluaron y compararon tres sistemas de humedales híbridos para la remoción de nitrógeno total (N total ) durante dos años. Se cuantificó el contenido de cada uno de los componentes nitrogenados: nitrógeno amoniacal (N-NH 4 + ), nitrato (NO 3 -) y nitrógeno orgánico (N Org ). El primer sistema (I) estuvo compuesto de un humedal subsuperficial de flujo horizontal (HSSFH), seguido de una laguna de estabilización (LE) aerobia; el segundo (II) por HSSFH seguido de un humedal subsuperficial de flujo vertical (HSSFV); y el tercero (III), por HSSFV seguido de HSSFH. Los tres sistemas fueron muy efectivos para la nitrificación. Se registraron incrementos elevados en la concentración de NO 3 -en los efluentes y eficiencias altas en la remoción de N-NH 4 + . Estas eficiencias fueron de 76.2 % y 78.7 %, en el sistema I; de 87.4 % y 92.5 % en el sistema II y de 82.6 % y 97.2 % en el sistema III, en el primer y segundo año, respectivamente. Respecto a la remoción de N total , el sistema I (HSSFH-LE) fue el más efectivo (p < 0.05) con remociones de 59.4 % y 57.7 % en los años 1 y 2, respectivamente. En los sistemas II (HSSFH-HSSFV) y III (HSSFV-HSSFH) las remociones fueron de 21.2 % y 34.4 %, y de 25.0 % y 36.3 %, respectivamente. La baja remoción de N total en los sistemas II y III, aparentemente se debió a una baja tasa de desnitrificación ante la ausencia de zonas anóxicas/anaerobias más extensas como resultado de la baja profundidad de los HSSFH y de las características del medio filtrante, tales como su distribución de tamaño de partícula (tezontle molido) y su elevada porosidad.Key words: ammonium, organic nitrogen, nitrate, vertical wetlands, Canna indica, Strelitzia reginae ABSTRACTIn this two-year study, three hybrid constructed wetlands were evaluated and compared for Total-N removal, quantifying the content of each of the nitrogen compounds: Ammonium (NH 4 + ), nitrate (NO 3 -) and organic nitrogen (Org-N). The first system (I) consisted of a subsurface flow horizontal wetland (SSFHW) followed by an aerobic stabilization pond (SP); the second one (II) consisted of a SSFHW followed by a subsurface flow vertical wetland (SSFVW); and the third one (III) was configured with a SSFVW followed by a SSFHW. The three systems were very effective for nitrification, Rev. Int.

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“…(), Ayaz et al. () and Hahn and Figueroa (), it can be concluded that at broadly constant temperature, the parameters HRT and upflow velocity seem to strongly influence the degradation efficiency.…”

Section: Discussionmentioning

confidence: 89%

“…The operation under moderate climate conditions with temperatures below 20°C was subject of only a few studies. These studies were carried out under laboratory‐scale (Orozco, ; Yu & Anderson, ; Gomec et al., 2010) or pilot‐scale conditions (Ayaz, Aktaş, Akça, & Fındık, ; Hahn & Figueroa, ). Bodík, Kratochvíl, Herdová, Tapia, and Gašpariková () studied an ABR operating between 5 and 23°C, but the results of the ABR are not applicable to other ABR systems since the ABR contained an aerated compartment and a secondary sedimentation tank.…”

Section: Introductionmentioning

confidence: 99%

Operational experience with a full‐scale anaerobic baffled reactor treating municipal wastewater

Schalk

Marx²,

Ahnert

et al. 2019

Water Environment Research

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The aim of the study was to investigate the influence of moderate temperatures on the efficiency of a full-scale anaerobic treatment system consisting of a primary sedimentation unit (PST) and an anaerobic baffled reactor (ABR, approx. 10 m 3 ). Therefore, two trials with different test setups in series were carried out (1st trial: continuous load; 2nd trial: diurnal variation load). The plant was fed with municipal wastewater and operated at temperatures between 8 and 24°C. The mean efficiency of the ABR was low, compared to the one of the PST. At 10°C, only 10% of the COD was removed. The COD (chemical oxygen demand) removal efficiency of the plant (PST + ABR) averaged 50%. At low temperatures, volatile fatty acids began to accumulate. In both trials, the contents of total suspended solids in the sludge bed differed distinctly and influenced the effort for desludging. • Practitioner points• The operation of ABR in combined collection systems depends on the efficiency of the pretreatment unit. • At cold temperatures, an ABR has no advantages compared to conventional pretreatment processes. • For use under moderate conditions, the design must be adjusted.

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Effluent quality and reuse potential of domestic wastewater treated in a pilot-scale hybrid constructed wetland system

Cited by 72 publications

References 15 publications

Risk-Yuck Factor Nexus in Reclaimed Wastewater for Irrigation: Comparing Farmers’ Attitudes and Public Perception

Risk-Yuck Factor Nexus in Reclaimed Wastewater for Irrigation: Comparing Farmers’ Attitudes and Public Perception

Evaluación De Tres Sistemas De Humedales Híbridos a Escala Piloto Para La Remoción De Nitrógeno

Operational experience with a full‐scale anaerobic baffled reactor treating municipal wastewater

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