The potential contribution of separation technologies to the management of livestock manure

Burton, C.H.

doi:10.1016/j.livsci.2007.09.004

Cited by 134 publications

(81 citation statements)

References 30 publications

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“…On the other hand, in structured soil this filtering effect can be severely reduced by preferential flow and macropore flow (13,14), and microorganisms may move with runoff or infiltrating water as free cells and/or attached to soil and manure particles (15,16,17). While the environmental fate of manure-borne contaminants has received attention in the past (5,11), there are recent developments in manure management techniques for improved nutrient use efficiency and odor control, including solid-liquid separation (18,19) and field application methods, that may alter the environmental fate of some contaminants (20,21).…”

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confidence: 99%

Persistence and Leaching Potential of Microorganisms and Mineral N in Animal Manure Applied to Intact Soil Columns

Amin

Forslund

Bui

et al. 2013

Appl Environ Microbiol

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Pathogens may reach agricultural soils through application of animal manure and thereby pose a risk of contaminating crops as well as surface and groundwater. Treatment and handling of manure for improved nutrient and odor management may also influence the amount and fate of manure-borne pathogens in the soil. A study was conducted to investigate the leaching potentials of a phage (Salmonella enterica serovar Typhimurium bacteriophage 28B) and two bacteria, Escherichia coli and Enterococcus species, in a liquid fraction of raw pig slurry obtained by solid-liquid separation of this slurry and in this liquid fraction after ozonation, when applied to intact soil columns by subsurface injection. We also compared leaching potentials of surface-applied and subsurface-injected raw slurry. The columns were exposed to irrigation events (3.5-h period at 10 mm h ؊1 ) after 1, 2, 3, and 4 weeks of incubation with collection of leachate. By the end of incubation, the distribution and survival of microorganisms in the soil of each treatment and in nonirrigated columns with injected raw slurry or liquid fraction were determined. E. coli in the leachates was quantified by both plate counts and quantitative PCR (qPCR) to assess the proportions of culturable and nonculturable (viable and nonviable) cells. Solid-liquid separation of slurry increased the redistribution in soil of contaminants in the liquid fraction compared to raw slurry, and the percent recovery of E. coli and Enterococcus species was higher for the liquid fraction than for raw slurry after the four leaching events. The liquid fraction also resulted in more leaching of all contaminants except Enterococcus species than did raw slurry. Ozonation reduced E. coli leaching only. Injection enhanced the leaching potential of the microorganisms investigated compared to surface application, probably because of a better survival with subsurface injection and a shorter leaching path.

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mentioning

confidence: 99%

Persistence and Leaching Potential of Microorganisms and Mineral N in Animal Manure Applied to Intact Soil Columns

Amin

Forslund

Bui

et al. 2013

Appl Environ Microbiol

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“…Another factor to consider in the solid-liquid separation is the economic efficiency which is mainly determined by the organic matter and nutrient (N, P and K) retention in the solid fraction [53]. Therefore, some processes integrate two sequential separation technologies to increase separation efficiency and provide different: (i) operation conditions (flows), (ii) performances (N and P recovery) and (iii) expenses (investment and operation cost) [57]. For instance, Parera et al [58] evaluated the economic viability of two solid and liquid separation systems, run down screen-screw press and screw press-centrifuge; concluding that operational conditions regulation and calibration (i.e.…”

Section: Digestate Solid-liquid Separationmentioning

confidence: 99%

Nutrient recovery technologies for anaerobic digestion systems: An overview

Romero-Güiza

Mata‐Alvarez

Rivera

et al. 2016

rev.ion

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“…Este fato pode estar relacionado à maior dispersão das partículas sólidas que entram no flotodecantador, facilitando a interação com os produtos químicos empregados, devido a um possível aumento da superfície de contato entre coagulantes e partículas presentes no dejeto (MORTIMER, 1991;BURTON, 2006;STEINMETZ, 2007). Na Figura 3, é mostrada a relação volumétrica dejeto tratado/produto químico, onde as linhas horizontais representam as relações médias esperadas para cada produto químico, após a diluição do dejeto suíno.…”

Section: Pam (Mg Lunclassified

“…Etapas de pré-tratamento envolvendo separação sólido-líquido são necessárias para evitar a sobrecarga de material particulado nas etapas seguintes de tratamento (BURTON, 2006;KUNZ & ENCARNAÇÃO, 2007). O emprego de peneiramento (KUNZ et al, 2009 b) ou substâncias coagulantes (STEINMETZ, 2007;VANOTTI et al, 2002) são algumas das alternativas desenvolvidas para essa fase, mas que necessitam de etapas complementares por não apresentarem eficiência suficiente na remoção de nutrientes, como nitrogênio e fósforo, que estão presentes em altas concentrações no dejeto de suínos.…”

Section: Introductionunclassified

Aplicação de efluente tratado de suinocultura para diluição de dejeto suíno e remoção de nitrogênio por desnitrificação

et al. 2011

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RESUMO:Este trabalho avaliou o efeito da diluição do dejeto de suíno com o efluente tratado a 50% (v/v), com vistas a aumentar a desnitrificação via fornecimento de carbono ao processo. Considerando--se a diluição estudada, a concentração média de N-NO 3 -na mistura foi de 47,9 + 14,5 mg L -1 , e a DQO da mistura, na faixa de 17.543 + 675 mg L -1 , resultando numa relação DQO/N-NO 3 -de 366, extremamente favorável à ocorrência da atividade desnitrificante no tanque de homogeneização da mistura. A concentração de N-NO 3 -foi reduzida biologicamente a 0,5 mg L -1 (cerca de 1% da concentração inicial). O procedimento testado promoveu, ainda, uma melhora na etapa de separação sólido-líquido, empregando coagulantes naturais, onde foi observado um consumo de tanino inferior ao esperado.PALAVRAS-CHAVE: tratamento de efluentes, dejeto de suíno, remoção de nitrogênio. APPLICATION OF SWINE CULTURE TREATED EFFLUENT FOR SWINE MANURE DILUTION AND NITROGEN REMOVAL BY DENITRIFICATIONABSTRACT: This study evaluated the effect of swine manure dilution with treated effluent up to 50% volumetric ratio of each part, intending to increase the denitrification by carbon feeding to the process. In studied dilution, the range of NO 3 --N content in the mixture was 47,9 + 14,5 mg L -1 and COD close to 17543 + 675 mg L -1 , resulting in favorable denitrification activity on equalization tank due to relation COD/N-NO 3 -upper to 360. The NO 3 --N concentration was biologically reduced to 0.5 mg L -1 (around 1% of initial concentration). An improvement in solid-liquid separation efficiency using natural and synthetic organic polymers was also reached in the diluted effluent when compared to the undiluted manure.

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The potential contribution of separation technologies to the management of livestock manure

Cited by 134 publications

References 30 publications

Persistence and Leaching Potential of Microorganisms and Mineral N in Animal Manure Applied to Intact Soil Columns

Persistence and Leaching Potential of Microorganisms and Mineral N in Animal Manure Applied to Intact Soil Columns

Nutrient recovery technologies for anaerobic digestion systems: An overview

Aplicação de efluente tratado de suinocultura para diluição de dejeto suíno e remoção de nitrogênio por desnitrificação

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