Evaluation of a combined anaerobic and aerobic system for the treatment of slaughterhouse wastewater

López-López, Alberto; Vallejo-Rodríguez, Ramiro; Méndez‐Romero, D.C.

doi:10.1080/09593330903470693

Cited by 36 publications

(20 citation statements)

References 7 publications

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“…Raw wastewater was pretreated with a UAF with a filling height of 90% and with the dimensions of ). It has been tested and used in a number of environmental applications [28], and it is inexpensive, since it is abundant in Mexico [29]. Furthermore, the material is considered inert, with pH values close to neutral, low cation exchange capacity, good ventilation and capacity in humidity retention depending on particle diameter [30].…”

Section: Treatment System Descriptionmentioning

confidence: 99%

The Effect of the Hydraulic Retention Time on the Performance of an Ecological Wastewater Treatment System: An Anaerobic Filter with a Constructed Wetland

Merino-Solís

Villegas

Anda

et al. 2015

Water

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This work assesses the performance of a municipal pilot wastewater treatment system employing an up-flow anaerobic filter (UAF) followed by a horizontal subsurface constructed wetland (HSSCW). This pilot scale demonstration project was implemented in a zone with subtropical climate in order to protect Lake Chapala from wastewater loads that are discharged by small communities in the Lake's vicinity. The filters were filled with tezontle as the media for biofilm support and the HSSCW was planted with two ornamental plants species, Canna hybrids and Strelitzia reginae. The experiment evaluated three hydraulic retention times (HRT) of 18, 28 and 38 h in the UAF, which corresponds to two, three and four days in HSSCW over 66 weeks. The mean efficiencies found for the complete system were 80% and 90% of BOD, 80% and 86% of COD, 30% and 33% of Ntot and between 24% and 44% of Ptot. It was possible to remove almost 80% of organic matter in 18 h in the UAF while the HSSCW reached 30% of removal for Ntot in a HRT of three days. As expected, the UAF was responsible for removing most of the organic matter and the HSSCW removed most of the nitrogen. OPEN ACCESSWater 2015, 7 1150

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Section: Treatment System Descriptionmentioning

confidence: 99%

The Effect of the Hydraulic Retention Time on the Performance of an Ecological Wastewater Treatment System: An Anaerobic Filter with a Constructed Wetland

Merino-Solís

Villegas

Anda

et al. 2015

Water

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“…Typical consumption values may vary from 1 to 15m 3 of water per ton of slaughtered carcass (PACHECO & YAMANAKA, 2006;LÓPEZ-LÓPEZ et al, 2010;MÉNDEZ-ROMERO et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

Performance of an anaerobic-aerobic reactor and kinetic study of organic matter removal of cattle slaughterhouse effluent

et al. 2014

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This paper sought to evaluate the behavior of an upflow Anaerobic-Aerobic Fixed Bed Reactor (AAFBR) in the treatment of cattle slaughterhouse effluent and determine apparent kinetic constants of the organic matter removal. The AAFBR was operated with no recirculation (Phase I) and with 50% of effluent recirculation (Phase II), with θ of 11h and 8h. In terms of pH, bicarbonate alkalinity and volatile acids, the results indicated the reactor ability to maintain favorable conditions for the biological processes involved in the organic matter removal in both operational phases. The average removal efficiencies of organic matter along the reactor height, expressed in terms of raw COD, were 49% and 68% in Phase I and 54% and 86% in Phase II for θ of 11h and 8h, respectively. The results of the filtered COD indicated removal efficiency of 52% and k = 0.0857h -1 to θ of 11h and 42% and k = 0.0880h -1 to θ of 8h in the Phase I. In Phase II, the removal efficiencies were 59% and 51% to θ of 11h and 8h, with k = 0.1238h -1 and k = 0.1075 h -1 , respectively. The first order kinetic model showed good adjustment and described adequately the kinetics of organic matter removal for θ of 11h, with r 2 equal to 0.9734 and 0.9591 to the Phases I and II, respectively. KEYWORDS: kinetic, cattle slaughterhouse, combined treatment system. DESEMPENHO DE UM REATOR ANAERÓBIO-AERÓBIO E ESTUDO CINÉTICO DE REMOÇÃO DE MATÉRIA ORGÂNICA DE EFLUENTE BOVINORESUMO: O objetivo deste estudo foi avaliar o desempenho de um Reator Anaeróbio-Aeróbio de Leito Fixo (RAALF) com escoamento ascendente, no tratamento de efluente bruto de matadouro bovino, e obter constantes cinéticas aparentes da remoção de matéria orgânica. O RAALF foi operado sem recirculação (Etapa I) e com 50% de recirculação do efluente (Etapa II), com θ de 11 h e 8 h. Em termos de pH, alcalinidade a bicarbonato e ácidos voláteis, os resultados indicaram que o RAALF apresentou capacidade em manter condições favoráveis para os processos biológicos envolvidos na remoção de matéria orgânica, em ambas as etapas operacionais. As eficiências médias de remoção de matéria orgânica ao longo da altura do reator, expressa em termos de DQO bruta, foram de 49% e 68% na Etapa I e de 54% e 86% na Etapa II, para θ de 11 h e 8 h, respectivamente. Os resultados de DQO filtrada indicaram eficiências de remoção de 52% e k = 0,0857 h -1 para θ de 11 h e 42% e k = 0,0880 h -1 para θ de 8 h na Etapa I. Na Etapa II, as eficiências de remoção foram 59% e 51% para θ de 11 h e 8 h, com k = 0,1238 h -1 e k = 0,1075 h -1 , respectivamente. O modelo cinético de primeira ordem indicou bom ajuste e descreveu adequadamente a cinética de remoção de matéria orgânica para θ de 11 h, com r 2 igual a 0,9734 e 0,9591 para as Etapas I e II, respectivamente.

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“…The total chemical oxygen demand (TCOD) and total suspended solids (TSS) in such wastewater can be in the range of 1.5 -20.4 g/L and 0.1 -4.7 g/L respectively. Treatment of meat processing plant and slaughterhouse wastewater is very important for the protection of the environment as it contains blood, animal fat, skin and meat particles, manure and pathogenic microorganisms, with blood being the major contributor in organic strength (Massé and Masse, 2000;López-López, et al, 2010). Furthermore, the industries face a surcharge fee if the effluent wastewater does not comply with the discharge standards requiring further treatment at municipal wastewater treatment plants (Mittal, 2006).…”

Section: Introductionmentioning

confidence: 99%

Performance of a Submerged Anaerobic Membrane Bioreactor (SAnMBR) for Food Wastewater Treatment: Treatment Efficiency and Membrane Fouling

Galib¹,

Elbeshbishy²,

Hong³

et al. 2014

proc water environ fed

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This study investigated the response of an AnMBR to various organic load rates by evaluating COD removal efficiency, biogas production and membrane fouling behaviour. The reactor was equipped with a submerged hollow fibre UF membrane and operated in continuous mode. Performances at three HRTs (5, 2 and 1 day) were investigated. Wide fluctuation of feed characteristics was observed, though it did not cause significant variation in performance. Average MLSS was 2.0-2.6 mg/L, SRT was constant at 50 days and average OLRs were 0.44, 1.43 and 3.14 Kg m-3 d -1 in Phase I, II and III. The reactor was able to achieve total COD removal efficiencies of 88 -95% with effluent COD concentrations of 96, 170 and 373 mg/L in the three Phases. Daily biogas production went up from 0.36 L/day in Phase I to 2.7±0.6 L/day in Phase III showing a positive correlation with the increase of OLR. The membrane had a maximum flux rate of 6.4 LM -2 H -1 and showed no significant sign of fouling until towards the end of Phase III. High level of EPS (97-105 mg/gVSS) supposedly aggravated membrane fouling due to development of cake sludge. The study clearly supports the applicability of submerged AnMBR in treating meat processing wastewater.

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Evaluation of a combined anaerobic and aerobic system for the treatment of slaughterhouse wastewater

Cited by 36 publications

References 7 publications

The Effect of the Hydraulic Retention Time on the Performance of an Ecological Wastewater Treatment System: An Anaerobic Filter with a Constructed Wetland

The Effect of the Hydraulic Retention Time on the Performance of an Ecological Wastewater Treatment System: An Anaerobic Filter with a Constructed Wetland

Performance of an anaerobic-aerobic reactor and kinetic study of organic matter removal of cattle slaughterhouse effluent

Performance of a Submerged Anaerobic Membrane Bioreactor (SAnMBR) for Food Wastewater Treatment: Treatment Efficiency and Membrane Fouling

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