Improvement in post-treatment of digested swine wastewater

Deng, Liangwei; Zheng, Ping; Chen, Ziai; Mahmood, Qaisar

doi:10.1016/j.biortech.2007.05.061

Cited by 79 publications

(37 citation statements)

References 20 publications

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“…variaram de 86 a 95% nas fases 1 e 2, e de 71% a 95% nas fases 3 e 4 (Figuras 5 e 6). DENG et al (2008), para aumentar a remoção de N-am. de 72%, para 92% e 99% no sistema de tratamento com reator UASB, com TDH de 3,0 d, seguido de RBS, com TDH de 3,3 d e ciclo de 8 h (4 h de aeração), adicionaram alcalinizante (1 g L -1 de carbonato de sódio) ou água residuária de suinocultura bruta (33% em volume) ao efluente anaeróbio que alimentava o RBS.…”

Section: Resultsunclassified

“…Entre as vantagens dos sistemas anaeróbio e aeróbio, destacam-se a baixa potência de aeração requerida, a menor produção de lodo biológico e o baixo custo de implantação, quando comparado aos sistemas aeróbios convencionais (CHERNICHARO, 2006). O reator operado em batelada sequencial (RBS) tem sido investigado para o tratamento de águas residuárias de suinocultura (BERNET et al, 2000;ZHANG et al, 2006;DENG et al, 2008) para promover a remoção biológica de matéria orgânica, nutrientes e coliformes. A característica fundamental de um RBS é a flexibilidade das etapas de um ciclo de operação, o que permite o estabelecimento de condições de processo que promovam a remoção biológica de nutrientes.…”

Section: Introductionunclassified

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Tratamento de águas residuárias de suinocultura em reatores anaeróbios de fluxo ascendente com manta de lodo (uasb) em dois estágios seguidos de reator operado em batelada sequencial (RBS)

Oliveira

Santana²

2011

Eng. Agríc.

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RESUMO:Neste trabalho, avaliou-se o desempenho de dois reatores anaeróbios de fluxo ascendente com manta de lodo (UASB), em série, seguidos de um reator operado em batelada sequencial (RBS) com etapa aeróbia, no tratamento de águas residuárias de suinocultura. O sistema de tratamento anaeróbio em dois estágios foi alimentado com águas residuárias de suinocultura com concentrações médias de sólidos suspensos totais (SST), de 4.427 a 16.425 mg L -1 . As cargas orgânicas volumétricas (COV) aplicadas no reator UASB do primeiro estágio variaram de 14,8 a 24,4 g DQO (L d) -1 . Os tempos de detenção hidráulica (TDH) foram de 28 e 11 h e de 14 e 6 h no primeiro e segundo reatores UASB, respectivamente. O RBS foi operado com 1 e 2 ciclos diários de alimentação e com concentrações de SST do afluente, de 1.348 a 2.036 mg L -1 . As maiores eficiências de remoção de DQO total ocorreram com os maiores TDH, com valores médios de 78 a 88% nos reatores UASB, em dois estágios. Com o tratamento do efluente dos reatores UASB no RBS, as eficiências médias de remoção aumentaram para 93 a 97%, 92 a 98%, 57 a 78%, 71 a 88% e 68 a 85% para a DQO total, SST, P-total, nitrogênio total Kjeldahl (NTK) e nitrogênio total (NT), respectivamente. Para os coliformes termotolerantes, as remoções foram de 93,80 a 99,99%.PALAVRAS-CHAVE: remoção de nutrientes, tratamento anaeróbio-aeróbio, pós-tratamento, nitrificação. SWINE WASTEWATER TREATMENT IN UPFLOW ANAEROBIC SLUDGE BLANKET REACTOR (UASB) IN TWO-STAGES FOLLOWED BY SEQUENCING BATCH REACTOR (SBR)ABSTRACT: This work aimed to evaluate the performance of two aerobic-anaerobic combination system of upflow anaerobic sludge blanket digestion reactor (UASB) in line followed by an aerobic sequencing bath reactor (SBR), used in swine wastewater treatment. The UASB system was fed with swine wastewater containing from 4427 to 16425 mg L -1 of total suspended solids (TSS). The treatment system was evaluated using organic loading (OLR) of 14,8 to 24,4 g total COD (L d) -1 in the first UASB reactor. The hydraulic detention times (HDT) were of 28 and 11 h, and 14 and 6 h, in the first and second UASB reactor, respectively. The SBR was operated with one and two cycles daily and the affluent had TSS concentrations of 1348 to 2036 mg L -1 . The higher total chemical oxygen demand (COD) removal efficiencies were of 78 to 81% in UASB reactors in two-stage and occurred with higher HDT. With the aerobic SBR used as post-treatment of the effluent from UASB reactors allowed removal efficiency averages of 93 to 97%, 92 to 98%, 57 to 78%, 71 to 88% and from 68 to 85% of total COD, TSS, total P, total Kjeldahl nitrogen (TKN) and total nitrogen (TN), respectively. The thermotolerants coliforms the removals were of 93.80 to 99.99%.

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Section: Resultsunclassified

Section: Introductionunclassified

Tratamento de águas residuárias de suinocultura em reatores anaeróbios de fluxo ascendente com manta de lodo (uasb) em dois estágios seguidos de reator operado em batelada sequencial (RBS)

Oliveira

Santana²

2011

Eng. Agríc.

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“…The NH 4 + -N load in reactor A was higher than the load of 0.04 kg N/(kg MLSS day) reported by Deng et al (2008) for the treatment of digested swine wastewater and 0.8 kg N/(kg MLVSS day) reported by Gabarró et al (2012) for the treatment of landfill leachate. Tokutomi et al (2010) indicated that high DO could improve AOB tolerance to FA inhibition.…”

Section: Comparison Of the Performance Of The Three Treatmentsmentioning

confidence: 55%

Response of nitrite accumulation and microbial community to free ammonia and dissolved oxygen treatment of high ammonium wastewater

Sui

Liu

Zhang

et al. 2016

Appl Microbiol Biotechnol

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The effects of free ammonia (FA) and dissolved oxygen (DO) on nitrite accumulation in the treatment of high ammonium wastewater and on the evolution of the microbial community were investigated. Under high DO conditions (3.75±0.49 mg/L), FA as high as 10.61±2.89 mg NH 3 /L maintained stable nitrite accumulation rate (NAR) of 84 % with NH 4 + -N load of 2.05 kg N/(m 3 day) at sludge retention time (SRT) of 15-18 days. After 56 days of operation, Proteobacteria and Nitrosomonas were the dominant phylum and genus, respectively; Nitrosomonas increased from 21.14 to 54.57 %. By contrast, under relative low DO and low FA, nitrite-oxidizing bacteria (NOB) were nearly eliminated (NOB/AOB of 0; ammonium-oxidizing bacteria (AOB)), and NAR of 94 % was achieved with lower NH 4 + -N load of 0.48 kg N/(m 3 day). DO correlated with AOB and NOB abundance, and FA decreased NOB activity and the NOB/AOB ratio. In conclusion, high FA and high DO conditions are optimal for efficient nitrite accumulation.

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“…The sequencing batch reactor (SBR) has been proven to be a very flexible tool for the treatment of swine wastewater, which performs in the removal of organic carbon, nitrogen and phosphate [13]. Deng et al [14] investigated the performance of SBR during treatment of swine wastewater and promoted the removal rate of total phosphorus. Struvite (MgNH 4 PO 4 ) crystallization, unlike most other methods (e.g., chemical precipitation and adsorption), can immobilize the sludge, and does not produce secondary waste requiring further management.…”

Section: Introductionmentioning

confidence: 99%

Assessment of Phosphorus Recovery from Swine Wastewater in Beijing, China

Wang

Zhang

et al. 2017

Sustainability

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Abstract:The nutrient management of phosphorus (P) contained in swine wastewater is an important challenge to enhance P use efficiency. In the present study, assessment of P recovery from swine wastewater in Beijing was performed. P amounts of swine wastewater increased from 11,687 tons in 1980 to 16,237 tons in 2014. Without treatment of swine wastewater, P concentration will reach a maximum 1.20 mg/L. The maximum P recovery was 99.36% under the condition of crystallization coupled BPR (biological phosphorus removal) when the operating conditions were 60.6 mg/L for C p (initial P concentration (mg/L)), 1.2 for Mg/P (magnesium-to-P molar ratio), 9.7 for pH of crystallization process, and 8.0 for pH, 1.6 h for anaerobic stage time, 15 days for sludge retention time of BPR. The P concentration for water quality was 0.03 mg/L to meet the water regulation standard. Under this situation, if the target P concentration were set as Grade II and III, pig breeding numbers reached 42.07 and 95.90 million heads. Construction investments for the crystallization, BRP, and coupled methods are 411 (10 4 Yuan, 604,307 USD), 301 (10 4 Yuan, 442,580 USD), and 551 (10 4 Yuan, 810,170 USD), respectively. The running costs are 15.205 (10 4 Yuan/year, 22,360 USD/year), 28.907 (10 4 Yuan/year, 42,500 USD/year) and 44.112 (10 4 Yuan/year, 64,860 USD/year). To manage non-point pollution, swine wastewater treatment facilities should be used and pig breeding numbers should be managed within reasonable ranges.

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Improvement in post-treatment of digested swine wastewater

Cited by 79 publications

References 20 publications

Tratamento de águas residuárias de suinocultura em reatores anaeróbios de fluxo ascendente com manta de lodo (uasb) em dois estágios seguidos de reator operado em batelada sequencial (RBS)

Tratamento de águas residuárias de suinocultura em reatores anaeróbios de fluxo ascendente com manta de lodo (uasb) em dois estágios seguidos de reator operado em batelada sequencial (RBS)

Response of nitrite accumulation and microbial community to free ammonia and dissolved oxygen treatment of high ammonium wastewater

Assessment of Phosphorus Recovery from Swine Wastewater in Beijing, China

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