Long-term operating performance of a poultry slaughterhouse wastewater treatment plant

Nery, Valéria Del; Nardi, I.R. de; Damianovic, Márcia Helena Rissato Zamariolli; Pozzi, Eloísa; Amorim, Ariuska Karla Barbosa; Zaiat, Marcelo

doi:10.1016/j.resconrec.2006.06.001

Cited by 104 publications

(33 citation statements)

References 38 publications

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“…The UASB process uses granules to capture bacteria, the SWW enters from the bottom of the reactor, flows upward through the sludge blanket, the biomass film, and exits at the top of the vessel. Essentially, UASB reactors consist of three stages: liquid as SWW, solid as biomass, and gas as CO 2 and CH 4 produced during digestion (Mittal, 2006;Del Nery et al, 2007, 2008. Caldera et al (2005) evaluated the performance of a UASB reactor of 4 L at mesophilic conditions for the treatment of SWW.…”

Section: Anaerobic Treatmentmentioning

confidence: 99%

Slaughterhouse wastewater characteristics, treatment, and management in the meat processing industry: A review on trends and advances

Bustillo-Lecompte

Mehrvar

2015

Journal of Environmental Management

336

186

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Section: Anaerobic Treatmentmentioning

confidence: 99%

Slaughterhouse wastewater characteristics, treatment, and management in the meat processing industry: A review on trends and advances

Bustillo-Lecompte

Mehrvar

2015

Journal of Environmental Management

336

186

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“…In addition, some of chemical additives, such as surfactants, were added in DAF system to destabilize the emulsion oil, which would cause a greater sludge accumulate and disposal capital. Without the addition of any chemical coagulants, Del Nery et al, [22] reported that an intermittent DAF system was applied to the poultry slaughterhouse wastewater treatment, for which the removal efficiency of oil and grease (O&G) and suspended solids (SS) was only 51 ± 16% and 37 ± 16%, respectively. With the application of coagulant in DAF units, the removal efficiency of O&G and SS ranging from 80 to 99% were achieved during the pretreatment of food industry wastewaters.…”

Section: The Influence Of Bubble Size On Oil Removalmentioning

confidence: 99%

Separation of Pollutants from Oil-Containing Restaurant Wastewater by Novel Microbubble Air Flotation and Traditional Dissolved Air Flotation

Zheng¹,

Shi²,

Huang³

et al. 2015

Separation Science and Technology

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Novel microbubble air flotation (MAF) and traditional dissolved air flotation (DAF) systems were compared based on the separation ability of pollutants from oil-containing restaurant wastewater, which was used to verify the strengths of MAF system. The results showed that, when the operational parameters were a PAC dosage of 20 mg/L, reaction time of 15 min, operational pressure of 0.35 MPa, and reflux ratio of 25%, the removal efficiencies of oil, COD cr , and turbidity in MAF were 10.3%, 22.6%, and 15.0% higher than that in DAF, respectively. The maximum removal efficiencies of oil and turbidity in the MAF system were 98.0% and 97.5%. In addition, the minimum microbubble diameter in the MAF system was 20 µm under the operational pressure of 0.9 MPa, which could be successively and steadily produced. The maximum oil removal efficiency was achieved in the MAF system when the microbubbles and oil-droplets were similar sizes. Therefore, the application of the MAF technology could alleviate the pressure of downstream treatment of oil-containing wastewater.

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“…Fat accumulation in biomass and the operational problems mentioned above occur because the substrate feeding rate becomes faster than the substrate degradation rate. For this reason, the anaerobic biological treatment of wastewater from poultry processing industries is almost always preceded by one or more pretreatment steps to reduce fat concentration (Del Nery et al, 2007;Nardi et al, 2008). Induced and dissolved air flotation, chemically aided or not, is often used to remove oil and grease from wastewater before biological processes.…”

Section: Introductionmentioning

confidence: 99%

Treatment of Wastewater With High Fat Content Employing an Enzyme Pool and Biosurfactant: Technical and Economic Feasibility

Damasceno

Cavalcanti-Oliveira

Kookos

et al. 2018

Braz. J. Chem. Eng.

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The combination of 0.5% weight per volume (w/v) crude enzyme consortia produced by solid state fermentation with Penicillium brevicompactum and 27 milligrams per liter (mg/L) of rhamnolipid biosurfactant produced by submerged fermentation with Pseudomonas aeruginosa was employed to pretreat wastewater from a poultry slaughterhouse in bench upflow anaerobic sludge blanket (UASB) bioreactors. One bioreactor was fed with untreated wastewater (Control) and another with pretreated wastewater (Test). Under an organic loading rate of 11 kg COD/m 3 .d, the Test bioreactor showed higher specific methane production (67.8 mL CH 4 (STP)/g COD removed), higher chemical oxygen demand (COD) (91.2%), and oil and grease (O&G) (95.8%) removal than the Control bioreactor, which produced 36.1-16.9 mL CH 4 (STP)/g COD removed with 72.5% COD removal and 48% O&G removal. The Control bioreactor experienced five clogging episodes due to the accumulation of fat on the surface, while the Test bioreactor operated without operational problems. The scum of the Control bioreactor contained more than 10 times higher quantities of fat than the Test bioreactor. The economic analysis indicated that such alternative technology has lower costs than conventional technology.

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Long-term operating performance of a poultry slaughterhouse wastewater treatment plant

Cited by 104 publications

References 38 publications

Slaughterhouse wastewater characteristics, treatment, and management in the meat processing industry: A review on trends and advances

Slaughterhouse wastewater characteristics, treatment, and management in the meat processing industry: A review on trends and advances

Separation of Pollutants from Oil-Containing Restaurant Wastewater by Novel Microbubble Air Flotation and Traditional Dissolved Air Flotation

Treatment of Wastewater With High Fat Content Employing an Enzyme Pool and Biosurfactant: Technical and Economic Feasibility

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