Vertical flow constructed wetland treating high strength wastewater from swine slurry composting

Vázquez, M.A.; Varga, D. de la; Plana, R.; Soto, M.

doi:10.1016/j.ecoleng.2012.06.038

Cited by 39 publications

(12 citation statements)

References 22 publications

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“…The reduction of the liquid fraction volume greatly reduces the transportation costs which are important in areas with intensive farming and low availability of crop land. The substantial reduction in pollutant concentration in the composting leachate is a point of great interest which makes possible an advanced treatment in constructed wetlands in order to reach the necessary water quality to be recycled or even to discharge in natural water bodies (Vázquez et al, 2013). In this way, both composting and constructed wetland systems can offer an integral solution for the recovery of water and fertilizer elements contained in pig manure and diverse locally generated solid wastes.…”

Section: Further Studies and Discussionmentioning

confidence: 99%

“…As these composting approaches could generate a significant volume of leachates (filtered liquid manure), the need for wastewater treatment remained. Natural treatment systems such as constructed wetlands (Bayo et al, 2012;Vázquez et al, 2013;Borin et al, 2013) have been suggested as being combined with liquid manure filtration through compost or vermicompost (Li et al, 2008) in order to reach the water quality to be recycled. Both composting and constructed wetland systems could offer an integral solution for the recovery of fertilizer elements contained in pig manure and diverse locally generated solid wastes.…”

Section: Introductionmentioning

confidence: 99%

“…Aerobic treatment aiming for nitrification and denitrification is a conventional treatment technology applied to liquid fraction (LF) of pig manure (Martinez-Almela and Barrera, 2005;Borin et al, 2013) but its high cost and certain unresolved operating problems do not eliminate the need for a low cost and sustainable cleaner technologies, in line with the European waste management hierarchy. With the aim of facilitating the direct LF re-use and nutrient recycling, different composting approaches for LF have been proposed (Li et al, 2008;Barrena et al, 2011;Bustamante et al, 2013;Vázquez et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Integrating liquid fraction of pig manure in the composting process for nutrient recovery and water re-use

Vázquez

Varga

Plana³

et al. 2015

Journal of Cleaner Production

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Section: Further Studies and Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Integrating liquid fraction of pig manure in the composting process for nutrient recovery and water re-use

Vázquez

Varga

Plana³

et al. 2015

Journal of Cleaner Production

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“…Neste trabalho, as menores eficiências podem estar relacionadas às maiores cargas orgânicas aplicadas ao SAC, comparadas àquelas aplicadas por MATOS et al (2011). VÁZQUEZ et al (2013) aplicaram 179 kg ha -1 d -1 de DQO de dejetos da suinocultura em SAC vertical e obtiveram 93% de remoção de DQO. Além da menor taxa de aplicação avaliada por VÁZQUEZ et al (2013), nos sistemas verticais, há maior oxigenação do líquido em tratamento, o que favorece a degradação da matéria orgânica.…”

Section: Resultsunclassified

Unidades combinadas RAFA-SAC para tratamento de água residuária de suinocultura – parte I carga orgânica removida

Amorim¹,

Fia²,

França³

et al. 2015

Eng. Agríc.

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RESUMO: Na pecuária brasileira, tem-se destacado a suinocultura, cuja produção de carne foi apontada como a terceira maior do mundo, e como contrapartida os sistemas produtivos são, potencialmente, poluidores do ambiente. Os sistemas anaeróbios têm sido utilizados para tratamento de água residuária suinícola, necessitando de complementação para diminuir as cargas de nutrientes e reúso agrícola. Neste trabalho, avaliou-se o efeito combinado de duas unidades de tratamento na remoção de matéria orgânica, na forma de demanda química de oxigênio (DQO), sendo um reator anaeróbio de manta de lodo e fluxo ascendente tipo RAFA com volume útil de 96 L, seguido de um sistema alagado construído (SAC) com capacidade para 237 L. O experimento foi conduzido em três fases, variando-se o tempo de detenção hidráulica (TDH) no reator anaeróbio, de 59 h, 19,5 h e 5 h, e no SAC, 146 h, 48 h e 13 h, respectivamente, nas fases 1, 2 e 3. A carga orgânica volumétrica (COV) aplicada foi de 1,2; 1,3 e 13,0 kg m -3 d -1 de DQO, e as taxas de aplicação superficial (TAS) no SAC foram de 850; 656 e 6335 kg ha -1 d -1 de DQO. As unidades combinadas removeram 0,07; 0,07 e 0,96 kg d -1 de DQO total e 0,03; 0,07 e 0,14 kg d -1 de DQO solúvel. As características apresentadas pelo efluente do sistema, nas diferentes fases, não alcançaram os padrões ambientais para lançamento em cursos de água, dentre as variáveis avaliadas. PALAVRAS-CHAVE:carga orgânica, Cynodon ssp, taxa de aplicação superficial, tratamento biológico, sistemas wetlands. COMBINED UNITS FOR SWINE WASTEWATER TREATMENT -PART I REMOVED ORGANIC LOADABSTRACT: Pig farming has excelled in Brazilian livestock whose meat production has been considered the third largest in the world. Conversely, these production systems have great environmental polluting potential. In addition, anaerobic systems have been used for swine wastewater treatment, requiring complementation to reduce loads of nutrients and for further agricultural reuse. This paper evaluated the combined effect of two treatment units in removing organic matter in the form of chemical oxygen demand (COD). The combined units consisted of an upflow anaerobic sludge blanket (UAS B) reactor with working volume of 96 L, followed by a constructed wetland system (CWS) with a capacity of 237 L. The experiment was conducted at three stages of hydraulic retention time (HRT) variation. The HRT was of 59, 19.5, and 5 hours for the UASB, and of 146, 48, and 13 hours for the CWS. The volumetric organic loading rates (VOLRs) were 1.2, 1.3, and 13.0 kg.m -3 d -1 of COD in the USBAR. The surface application rates (SAR) in the CWS were 850, 656, and 6335 kg.ha -1 .d -1 of COD. The associated units removed 0.07, 0.07, and 0.96 kg.d -1 of total COD, as well as 0.03, 0.07 and 0.14 kg.d -1 of soluble COD. The final effluent characteristics did not reach environmental standards for being released into water bodies in any of the stages; however, its nutritional potential should be considered for use in agricultural production.

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“…Composting leachate is a complex type of wastewater with high organic and mineral load (Gagnaire et al, 2011;Trujillo et al, 2006;Vázquez et al, 2013;Zhou et al, 2010). In composting facilities, leachate should be properly collected, stored, and managed in order to avoid negative environmental impacts such as aquatic eutrophication.…”

Section: Introductionmentioning

confidence: 99%

Nitrification of leachates from manure composting under field conditions and their use in horticulture

Cáceres¹,

Magrí²,

Marfà³

2015

Waste Management

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Vertical flow constructed wetland treating high strength wastewater from swine slurry composting

Cited by 39 publications

References 22 publications

Integrating liquid fraction of pig manure in the composting process for nutrient recovery and water re-use

Integrating liquid fraction of pig manure in the composting process for nutrient recovery and water re-use

Unidades combinadas RAFA-SAC para tratamento de água residuária de suinocultura – parte I carga orgânica removida

Nitrification of leachates from manure composting under field conditions and their use in horticulture

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