Distribution of phosphorus, copper and zinc in activated sludge treatment process of swine wastewater

Suzuki, Kazuyoshi; Waki, Miyoko; Yasuda, Tomoko; Fukumoto, Yasuyuki; Kuroda, Kazutaka; Sakai, Takahiro; Suzuki, Naoto; Suzuki, Ryoji; Matsuba, Kenji

doi:10.1016/j.biortech.2010.07.014

Cited by 56 publications

(40 citation statements)

References 13 publications

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“…9, only the Pb concentrations at Station 7 increased at the end of March, which demonstrates that the high PoS Index at this station might be mostly attributed to the Pb concentrations. At Station 5, the PoS Index was greater than 70 on March 19,20,25, and 27, with groundwater qualities in Class 3. According to the PoS Index, the most serious pollution occurred at Station 1, where the PoS Index was always higher than 70.…”

Section: Groundwater Quality Assessment Using Pollution Index Methodsmentioning

confidence: 92%

See 1 more Smart Citation

Heavy Metal Distribution and Groundwater Quality Assessment for a Coastal Area on a Chinese Island

Lou¹,

Dai²,

Tao³

et al. 2017

Pol. J. Environ. Stud.

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Chongming Island is located in the lower Yangtze Estuary in China. Due to the Leachate from a refuse landfill and the hydrodynamics of the Yangtze Estuary, the groundwater environment is particularly complicated on Chongming Island. Field observations were carried out around the landfill disposal site. The groundwater table, temperature, pH, salinity, and dissolved oxygen were measured in the field by portable equipment, and 192 water samples were collected at eight groundwater sites and one surface water site. Through laboratory analysis we found the highest measured concentration of Cr to be 54.07 μg/L, and the measured concentration of Zn was in the range of 8 μg/L to more than 200 μg/L, which were both higher than their background values. Strong correlations were found between the heavy metal (Cr, Ni, Cu) concentrations and physico-chemical characteristics (salinity and pH), which indicated that both the landfill and the tides played an important role in the distribution of heavy metal concentrations. Both the HPI and PoS Indices were greater than their critical values near the disposal site, indicating groundwater pollution by heavy metals. We show that Cr and Ni are the major heavy metals causing groundwater contamination in the study region.

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Section: Groundwater Quality Assessment Using Pollution Index Methodsmentioning

confidence: 92%

“…As mentioned above, the pH value was indicative of leachate percolation. When the pH was accidentally high, high concentrations of heavy metals were also observed [25].…”

Section: Correlations Between Heavy Metal Concentrations and Physico-mentioning

confidence: 99%

Heavy Metal Distribution and Groundwater Quality Assessment for a Coastal Area on a Chinese Island

Lou¹,

Dai²,

Tao³

et al. 2017

Pol. J. Environ. Stud.

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“…The presence of a larger number of pre-slaughter animals reduces the effluent dilution. Also, nutritional aspects and manure storage time in gutters directly influence swine effluent concentration and biodegradability (KUNZ et al, 2009 b;JUNIOR et al, 2010;SUZUKI et al, 2010).…”

Section: Resultsmentioning

confidence: 99%

Swine effluent treatment using anaerobic digestion at different loading rates

et al. 2014

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ABSTRACT:The industrial swine production is characterized by generation of significant effluent amounts that require treatment. The most adopted practices by Brazilian swine farmers have been wastewater storage in lagoons and its subsequent use as a biofertilizer. Nutrient accumulation in soil and water creates the need for an effective management of these residues. The anaerobic digestion process is an important alternative and low-cost treatment for organic matter reduction. However, its efficiency is limited by the digester capacity of solid degradation, especially at low hydraulic retention times. Thus, the present study aimed to verify the behavior of an upflow anaerobic digester by increasing the organic loading rate. This was accomplished in three stages using, as a parameter, volatile solids at 0.5; 1.0 and 1.5 kgVS m -3 d -1, respectively. This digester model proved to be quite robust and effective in swine manure treatment, achieving high efficiency of volatile solid removal at all stages of the study (stage 1: 61.38%; stage 2: 55.18%; and stage 3: 43.18%). Biogas production was directly related to the increasing organic load, reaching 0.14, 0.85, and 0.86add. , respectively, with no significant difference (p<0.05) of biogas methane concentration among the studied stages (73.7, 75.0, and 77.9%).KEYWORDS: hydraulic retention time, biogas production, animal wastewater. TRATAMENTO DE EFLUENTE DA SUINOCULTURA UTILIZANDO PROGRESSÃO DE CARGA ORGÂNICA EM BIODIGESTOR ANAERÓBIO DE FLUXO ASCENDENTE RESUMO:A suinocultura industrial tem como característica a geração de significativas quantidades de efluente que necessitam de tratamento. O processo de biodigestão anaeróbia surge como uma alternativa importante, de baixo custo para o tratamento e eficiente na redução da matéria orgânica das águas residuárias da suinocultura. Porém os processos anaeróbios têm sua eficiência limitada, entre muitos aspectos, pela concentração de sólidos voláteis no biodigestor e sua capacidade de mineralização da matéria orgânica em função do tempo de retenção hidráulica. Diante disso, o presente estudo teve por objetivo verificar o comportamento de um biodigestor anaeróbio de fluxo ascendente, alimentado com dejetos de suínos, mediante progressão de carga de sólidos voláteis. O estudo foi realizado em três etapas, utilizando-se como parâmetro de sólidos voláteis a 0,5; 1,0 e 1,5 kgSV m -3 d -1 , respectivamente. Este modelo de biodigestor mostrou ser bastante eficaz e robusto no tratamento de efluentes da suinocultura, atingindo boa eficiência na remoção de sólidos voláteis em todas as etapas do trabalho (etapa 1: 61,38%, etapa 2: 55,18% e etapa 3: 43,18%). A produção de biogás teve relação direta com o aumento da carga orgânica, atingindo 0,14; 0,85 e 0,86 Nm 3 kgSV adic. , respectivamente, não havendo diferença significativa (p<0,05) na porcentagem de metano no biogás entre elas (73,7; 75,0 e 77,9%).

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“…Third, we found that the proportions of dissolved Zn (d-Zn) and dissolved Cu (d-Cu) were significantly lower at site P5 than P6 (Table 1). The Zn and Cu in the raw wastewater from the swine farms were primarily in particulate form (p-Zn and p-Cu, respectively; Suzuki et al 2010). A WWTF removes particles from the wastewater, the result being that in treated effluent p-Zn and p-Cu account for only 19 and 9% of total Zn and Cu, respectively (Suzuki et al 2010).…”

Section: Identifying the Dominant Source Of Zn In The Watershedmentioning

confidence: 99%

“…Metallic zinc (Zn) can be an effective tracer for quantifying the contribution of swine farming to water pollution because Zn, as well as copper (Cu), is typically present at high concentrations in effluent from swine farms (Abe et al 2012, Suzuki et al 2010. These elements are added to commercial swine feeds to promote gain in body weight (Nicholson et al 1999, Tanaka 2005, but the swine absorb only 10-20% of the Zn and Cu and excrete the rest in their feces (Tanaka 2005).…”

Section: Introductionmentioning

confidence: 99%

Assessment of Potential Risk to Aquatic Organisms by Zinc Originating from Swine Farm Effluent in a Rural Area of Japan

Itahashi

Kasuya

Suzuki

et al. 2014

JARQ

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Commercial swine production can cause local water pollution if effluent water containing high levels of nitrogen (N), phosphorus (P), pathogen and heavy metals is discharged, but the actual status remains poorly documented. We thus selected zinc metal (Zn) as a tracer and conducted water quality observations in a rural river of Japan to reveal the significance of mid-sized swine farms on Zn pollution there. Results showed that one farm was the major contributor of Zn load in watershed, corresponding to 82% of total Zn load at a normal stage of water, which was apparently attributable to insufficient wastewater treatment at the farm. Consequently, the Zn concentration at the outlet was estimated at 37 μg L -1 , revealing a significant ecological risk at 9.1% to aquatic organisms. We then analyzed the effectiveness of improved wastewater treatment of the farm and found that it had a plausible capacity to keep Zn concentration at the outlet below the environmental quality standard level (30 μg-Zn L -1 ) and the ecological risk at a safety level (<5%) as well. Based on these results, we concluded that since a swine farm could be a significant source of pollutants in rural areas, appropriate treatment of wastewater would be essential to sustain the potential pollution by Zn.

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Distribution of phosphorus, copper and zinc in activated sludge treatment process of swine wastewater

Cited by 56 publications

References 13 publications

Heavy Metal Distribution and Groundwater Quality Assessment for a Coastal Area on a Chinese Island

Heavy Metal Distribution and Groundwater Quality Assessment for a Coastal Area on a Chinese Island

Swine effluent treatment using anaerobic digestion at different loading rates

Assessment of Potential Risk to Aquatic Organisms by Zinc Originating from Swine Farm Effluent in a Rural Area of Japan

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