Poultry slaughter wastewater treatment with an up-flow anaerobic sludge blanket (UASB) reactor

P., C. Chávez; L., R. Castillo; Dendooven, Luc; Escamilla‐Silva, Eleazar M.

doi:10.1016/j.biortech.2004.08.017

Cited by 67 publications

(19 citation statements)

References 11 publications

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“…These systems provided only a partial treatment of complex wastewaters containing high fraction of suspended solids, such as slaughterhouse wastewater (Sayed et al 1984(Sayed et al , 1987. The researches have shifted towards the application of high rate systems, like the upflow anaerobic sludge blanket (UASB), for the complete treatment of agro-industrial wastewaters (Sayed et al 1993;Borja et al 1994;Rajeswari et al 2000;Del Pozo et al 2002;Torkian et al 2003;Chaves et al 2005). The results showed that, due to the suspended solid entrapment and accumulation, the anaerobic process stability was affected, leading to reduction in the methanogenic activity, sludge flotation and loss of active biomass from the reactor.…”

Section: Introductionmentioning

confidence: 98%

Treatment of slaughterhouse wastewater in upflow anaerobic sludge blanket reactor

Nacheva

Pantoja

Serrano

2011

Water Science and Technology

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The performance of an upflow anaerobic sludge blanket (UASB) reactor operated at ambient temperature (20.9-25.2°C) was analysed for the treatment of slaughterhouse wastewater previously pre-treated for solid separation. The experimental work was carried out in a reactor with 15 L effective volume. Four organic loads were applied and the process performance was evaluated. The COD removal rate increased with the load rise from 4 to 15 kg COD.m(-3).d(-1). Removal efficiencies of 90% were obtained with a load of 15 kg COD.m(-3).d(-1). The entrapment of suspended solids in the sludge blanket was greater in proportion during the first two stages due to the low upflow velocities used when loads of 4 and 7 kg COD.m(-3).d(-1) were evaluated. This phenomenon did not affect the structure of the biological grains or their methanogenic activity. More than 50% of the organic nitrogen was degraded, causing a 3% increase of ammonia concentration. The concentrations of the volatile fatty acids were not high and the wastewater alkalinity was enough to prevent acidification. The yield coefficient of methane production increased with the load rise, reaching 0.266 m(3)/kg COD(removed) at 15 kg COD.m(-3).d(-1) organic load. The UASB reactor is a good option for the biological treatment of pre-treated slaughterhouse wastewater. However, additional treatment is required in order to accomplish the water quality requirements in discharges to water bodies.

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Section: Introductionmentioning

confidence: 98%

Treatment of slaughterhouse wastewater in upflow anaerobic sludge blanket reactor

Nacheva

Pantoja

Serrano

2011

Water Science and Technology

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“…Among the numerous high efficiency anaerobic technologies, up-flow anaerobic sludge blanket (UASB) reactor has been widely and successfully applied due to its high efficiency, low investment and operation cost, simplicity and strong resistance to shock load (Del Pozo et al 2000;Del Nery et al 2001). And it has been applied for many wastewater treatments, including poultry wastewater (Chá vez et al 2005), phenolic wastewater (Hussain et al 2008), high strength sewage (Mahmoud 2008) and azo dye wastewater (Ong et al 2005). Nevertheless, few investigations on the application of the UASB reactor to coking wastewater treatment has been reported to date.…”

Section: Introductionmentioning

confidence: 99%

Biodegradation of organic compounds from coking wastewater with UASB reactor

Wang

Shen

et al. 2010

Water Science and Technology

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The UASB reactor was applied for biodegradation of organic compounds in coking wastewater. The influent pH ranged between 6.8 and 7.2, and stirring speed and temperature were controlled at 2 r/min and 30±1°C, respectively. The reactor was successfully started up in 133 days. When the influent COD was 2,600 mg/L (VLR was 2.6 kg/m(3) d), the removal rate of COD was about 54% and the effluent VFA was below 400 mg/L. GC/MS analysis indicated that the coking wastewater mainly contained aniline, phenol, o-phenol, p-cresol, benzoic acid, indole, quinoline etc. Twenty four kinds of organic compounds were detected in the influent, and 20 kinds of organic compounds were completely removed in the UASB reactor. The biodegradation of organic compounds followed Grau second-order kinetics. It was proved to be an effective and feasible method for coking wastewater anaerobic treatment.

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“…Slaughtering animals and/or the production of related products are coupled with the need for a lot of clean water and related to the emission of polluted water, which has to be purified before it can be drained off. Therefore, slaughterhouse processes in the industrialized countries are coupled with strict legislation and control to protect public health and the environment [1][2][3][4][5][6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

“…The consumption of water per slaughtered animal varies according to the animal and the process employed in each industry, and ranges from 1.0 to 8.3 m 3 . Meat processing plants use approximately 62 Mm 3 /y of water [8,[10][11][12]. Meat industry wastewaters composition is strong compared to domestic wastewater.…”

Section: Introductionmentioning

confidence: 99%

Toxicity Assessment of Treated Meat Industry Wastewater in the Anaerobic Process

Kwarciak‐Kozłowska

2017

Eng. Prot. Environ.

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Ocena toksyczności ścieków z przemysłu mięsnego oczyszczonych w procesie beztlenowymMajor pollutant components of meat processing wastewater are biodegradable organic compounds, fats and proteins in both particulate and dissolved forms. Because of the possible pollution of water sources, the efficient disposal of effluent from meat plants is important. The treatment of industrial wastewater is a highly complex process that generally involves factors associated with load fluctuations and high concentrations of organic matter. Toxic effects on aquatic organisms and plants may be caused by numerous nitrogen compounds, as well as detergents and antibiotics, in the meat industry wastewater. The aim of the research was to determine the toxicity of anaerobic treated meat industry wastewaters. The level of toxicity was determined with algae growth inhibition test and Lepidium test. The values of ErC50 (0÷96) and EbC50 of indicators were 18.4 and 8.6% respectively. TU value for ErC50 was 5.51 which meant acute toxicity of wastewater. The value of TU for EbC50 was 11.62 (high toxicity of wastewater). The values of indicators RSG (relative seed germination), RRG (relative root growth) and GI (germination index) were 92, 19.5 and 17.62% respectively. Treatment efficiency meat industry wastewater during fermentation process was very high. The COD and BOD removal efficiency were on 82.3 and 80% respectively. Effluent from ASBR reactor had following parameters: COD -206 mg O2/dm 3 and BOD -130 mg/dm 3 . TOC value after anaerobic process was 75 mg C/dm 3 (78.1%). The concentration of ether extract and proteins were 188 and 74 mg/dm 3 respectively. Generated biogas in the methane fermentation process of wastewater from meat industry plants was characterized by a high methane content (77.5% vol.). Carbon dioxide and the ballast in the analyzed biogas were 20 and 2.5% respectively. In order to enrich biomass with methane by removal of CO2 from its content, the gas generated in the anaerobic process was subjected to the processes of chemisorption and adsorption on the granulated active carbons and molecular sieve. Purification the raw biogas by a molecular sieve has contributed to the increase of methane in enriched from 77.5 to 92.6% and the removal of CO2 from 20 to 5.7%. Due to poor quality and its high toxicity, effluent from ASBR reactor can not to be discharged into natural water. In the future it is suggested to incorporate RO or UF into the technological system in order to posttreatment the wastewater.

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Poultry slaughter wastewater treatment with an up-flow anaerobic sludge blanket (UASB) reactor

Cited by 67 publications

References 11 publications

Treatment of slaughterhouse wastewater in upflow anaerobic sludge blanket reactor

Treatment of slaughterhouse wastewater in upflow anaerobic sludge blanket reactor

Biodegradation of organic compounds from coking wastewater with UASB reactor

Toxicity Assessment of Treated Meat Industry Wastewater in the Anaerobic Process

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