Avaliação do desempenho do reator anaeróbio de manta de lodo (uasb) em escala laboratorial na remoção da carga orgânica de águas residuárias da suinocultura

Campos, Cláudio Milton Montenegro; Damasceno, Leonardo Henrique Soares; Mochizuki, Emerson Teruaki; Botelho, Cláudio Gouvêa

doi:10.1590/s1413-70542005000200017

Cited by 9 publications

(3 citation statements)

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“…Studies conducted by ASAE (1990) characterized these animals diet, classifying the food according to the percentage of fixed solids, which varies from 15% to 30% of the ration. The biodegradable fraction is characterized by the fermentation of organic material resulting in the production of odors that are sources of pollution and can be a hindrance to the intensification of hog farming (Campos et al, 2005). Considering the fact that hydrolysis is a limiting step to anaerobic digestion of complex wastes, such as hog wastewater, anaerobic digestion has been proposed to be conducted in two stages, in which there is a separation of steps: partial hydrolysis of particulate organic compounds is carried out in the first reactor, and the stabilization of the soluble compounds resulting from the first reactor occurs in a second reactor, allowing, in this way, the production of methane gas.…”

Section: Introductionmentioning

confidence: 99%

The behaviour of an anaerobic baffled reactor (ABR) as the first stage in the biological treatment of hog farming effluents

Motteran

Pereira

Campos

2013

Braz. J. Chem. Eng.

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-This present paper reports a study of the efficiency of an anaerobic Baffled Reactor (ABR) composed of three chambers working as the first stage of a biological treatment system for swine wastewater, over a period of 116 days. The average value of the volumetric organic loading rate (VOLR) was 17.8 kgCODtotal m -3 d -1 , the biological organic loading rates (BOLR) based on total and filtered COD influents of 14381 mg L -1 and 3610 mg L -1 , respectively, were: 1.3 kgCODtotal kgTVS d -1 and 0.98 kgCODfiltered kgTVS d -1 , respectively, and the hydraulic loading rate (HLR) was about 1.4 m 3 m -3 d -1 . The average removal efficiency for total COD was 80% at a hydraulic retention time (HRT) of about 18 hours. The average alkalinity in the effluent was 3801 mgCaCO 3 L -1 . The average removal efficiencies for oil and grease and total soluble solids were 41% and 78%, respectively. The sludge granulation and biogas production in the ABR were quite different between the first and third compartment, showing a distinct microbial consortium in each chamber. Through this research it was confirmed that this type of reactor can be employed as the first stage in a system treating swine wastewater.

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Section: Introductionmentioning

confidence: 99%

The behaviour of an anaerobic baffled reactor (ABR) as the first stage in the biological treatment of hog farming effluents

Motteran

Pereira

Campos

2013

Braz. J. Chem. Eng.

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“…In this reactor, an intern device of separation of solid/gas/liquid works with high cell retention time, even with low hydraulic retention time (HRT) (CAMPOS et al, 2005). The result is a compact reactor which requires little area for construction, with lower volume than conventional anaerobic digester.…”

Section: Introductionmentioning

confidence: 99%

Performance of UASB reactors in two stages under different HRT and OLR treating residual waters of swine farming

2013

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In this study it was evaluated the effects of hydraulic retention time (HRT) and Organic Loading Rate (OLR) on the performance of UASB (Upflow Anaerobic Sludge Blanket) reactors in two stages treating residual waters of swine farming. The system consisted of two UASB reactors in pilot scale, installed in series, with volumes of 908 and 188 L, for the first and second stages (R1 and R2), respectively. The HRT applied in the system of anaerobic treatment in two stages (R1 + R2) was of 19.3, 29.0 and 57.9 h. The OLR applied in the R1 ranged from 5.5 to 40.1 kg COD total (m 3 d) -1 . The average removal efficiencies of chemical oxygen demand (COD) and total suspended solids (TSS) ranged, respectively, from 66.3 to 88.2% and 62.5 to 89.3% in the R1, and from 85.5 to 95.5% and 76.4 to 96.1% in the system (R1 + R2). The volumetric production of methane in the system (R1 + R2) ranged from 0.295 to 0.721 m 3 CH 4 (m 3 reactor d) -1 . It was found that the OLR applied were not limiting to obtain high efficiencies of COD total and TSS removal and methane production. The inclusion of the UASB reactor in the second stage contributed to increase the efficiencies of COD total and TSS removal, especially, when the treatment system was submitted to the lowest HRT and the highest OLR.KEYWORDS: anaerobic digestion, swine excrements, methane gas, UASB reactors in series, two stage treatments. DESEMPENHO DE REATORES UASB EM DOIS ESTÁGIOS SOB DIFERENTES TDH E COV TRATANDO ÁGUAS RESIDUÁRIAS DE SUINOCULTURARESUMO: Neste trabalho, avaliou-se o efeito do tempo de detenção hidráulica (TDH) e da carga orgânica volumétrica (COV) no desempenho de reatores UASB (Upflow Anaerobic Sludge Blanket), em dois estágios, tratando águas residuárias de suinocultura. O sistema foi constituído por dois reatores UASB em escala-piloto, instalados em série, com volumes de 908 e 188 L, para o primeiro e segundo estágios (R1 e R2), respectivamente. Os TDH, aplicados no sistema de tratamento anaeróbio, em dois estágios (R1 + R2), foram de 19,3; 29,0 e 57,9 h. As COVs aplicadas no R1 variaram de 5,5 a 40,1 kg DQO total (m 3 d) -1 . As eficiências médias de remoção de demanda química de oxigênio total (DQO total ) e sólidos suspensos totais (SST) variaram, respectivamente, de 66,3 a 88,2% e de 62,5 a 89,3% no R1, e de 85,5 a 95,5% e de 76,4 a 96,1% (no sistema R1 + R2). A produção volumétrica de metano no sistema R1 + R2 variou de 0,295 a 0,721 m 3 CH 4 (m 3 reator d) -1 . Verificou-se que as COVs aplicadas não foram limitantes para a obtenção de altas eficiências de remoção de DQO total e SST e produção de metano. A inclusão do reator UASB no segundo estágio contribuiu para o aumento das eficiências de remoção de DQO total e SST, sobretudo quando o sistema de tratamento foi submetido aos menores TDHs e maiores COVs. PALAVRAS-CHAVE: digestão anaeróbia, dejetos de suínos, gás metano, reatores UASB em série, tratamento em dois estágios.

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“…A utilização de sistemas anaeróbios vem sendo amplamente estudada para o tratamento de águas residuárias de suinocultura, em virtude da produção de energia e da pequena demanda de área (CAMPOS et al, 2005). A aplicação dos processos biológicos de tratamento de águas residuárias aumentou significativamente nas últimas décadas, especialmente dos reatores anaeróbios com biomassa imobilizada.…”

Section: Introductionunclassified

Tratamento de águas residuárias de suinocultura em reatores anaeróbios horizontais seguidos de reator aeróbio em batelada sequencial

Santos

Oliveira

2011

Eng. Agríc.

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RESUMO:Avaliou-se o desempenho de um sistema combinado anaeróbio-aeróbio para o tratamento de águas residuárias de suinocultura, com concentrações médias de sólidos suspensos totais (SST) de 18.624 e 11.395 mg L -1 . Foram utilizados quatro reatores anaeróbios horizontais com volume total de 49,5 L cada, um com manta de lodo (RAHML) e três de leito fixo (RAHLF), instalados em série e seguidos de um reator aeróbio operado em batelada sequencial (RBS) com volume total de 339 L e com alimentação contínua. PALAVRAS-CHAVE:tratamento anaeróbio-aeróbio-anóxico, pós-tratamento, remoção de nutrientes, tratamento terciário, nitrogênio. SWINE WASTE WATER TREATMENT IN HORIZONTAL ANAEROBIC REACTOR FOLLOWED BY AEROBIC SEQUENCING BATCH REACTORABSTRACT: An anaerobic-aerobic combined system was evaluated to treat swine wastewater with an average total suspended solids (TSS) concentration of 18,624 to 11,395 mg L -1 . The anaerobic treatment system was constituted by four horizontal reactors each one having a total volume of 49.5 L, one with sludge blanket (HASBR) and tree with fixed film (HAFFR) installed in series, followed by an aerobic sequential batch reactor (SBR) with continue feeding, with total volume of 339 L. In the HAFFR was used as support to fix the film bamboo and plastic rings, and wad (Luffa cillyndrica). The hydraulic detention time (HDT) and the volumetric organic load (VOL) applied in HASBR were respectively 12 and 10 h, and 52.6 and 60.9 g COD (L d) -1 . The SBR was operated in a 24 hours operational cycle with VOL of 0.34 and 0.50 g COD (L d) -1 . The average of total COD and TSS removed in horizontal anaerobic reactors set were of 96 to 99% and of 96 to 95%, respectively. The higher methane production happened in HAFFR with values up to 0.744 m 3 CH 4 (m 3 reactor d) -1. With the SBR inclusion improved the effluent quality and the stability of treatment system and COD and TSS removal increased to 99 and 99%, and to 98 and 99%, respectively. In the SBR occurred nitrification and denitrification, with ammoniacal-N removal up to 65%.

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Avaliação do desempenho do reator anaeróbio de manta de lodo (uasb) em escala laboratorial na remoção da carga orgânica de águas residuárias da suinocultura

Cited by 9 publications

References 1 publication

The behaviour of an anaerobic baffled reactor (ABR) as the first stage in the biological treatment of hog farming effluents

The behaviour of an anaerobic baffled reactor (ABR) as the first stage in the biological treatment of hog farming effluents

Performance of UASB reactors in two stages under different HRT and OLR treating residual waters of swine farming

Tratamento de águas residuárias de suinocultura em reatores anaeróbios horizontais seguidos de reator aeróbio em batelada sequencial

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