Treatment of slaughterhouse wastewater in a UASB reactor and an anaerobic filter

Ruíz, I.; Veiga, María C.; Santiago, P. de; Blázquez, R.

doi:10.1016/s0960-8524(97)00020-5

Cited by 127 publications

(72 citation statements)

References 15 publications

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“…The proper treatment technologies of slaughterhouse wastewater have the potential to produce high-quality wastewater that meets the international standards for the disposal process. Anaerobic treatment in upflow anaerobic sludge blanket (UASB) and aerobic filter methods exhibited high efficiency in removing COD of up to 90% (Ruiz et al 1997). The moving bed sequencing batch reactor had been reported as an effective method for COD, BOD, and TKN removal at 80, 90, and 86-93%, respectively (Sombatsompop et al 2011).…”

Section: Characteristics Of Wet Market Wastewater and Slaughterhouse mentioning

confidence: 99%

An overview of the utilisation of microalgae biomass derived from nutrient recycling of wet market wastewater and slaughterhouse wastewater

2017

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Microalgae have high nutritional values for aquatic organisms compared to fish meal, because microalgae cells are rich in proteins, lipids, and carbohydrates. However, the high cost for the commercial production of microalgae biomass using fresh water or artificial media limits its use as fish feed. Few studies have investigated the potential of wet market wastewater and slaughterhouse wastewater for the production of microalgae biomass. Hence, this study aims to highlight the potential of these types of wastewater as an alternative superior medium for microalgae biomass as they contain high levels of nutrients required for microalgae growth. This paper focuses on the benefits of microalgae biomass produced during the phycoremediation of wet market wastewater and slaughterhouse wastewater as fish feed. The extraction techniques for lipids and proteins as well as the studies conducted on the use of microalgae biomass as fish feed were reviewed. The results showed that microalgae biomass can be used as fish feed due to feed utilisation efficiency, physiological activity, increased resistance for several diseases, improved stress response, and improved protein retention.

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Section: Characteristics Of Wet Market Wastewater and Slaughterhouse mentioning

confidence: 99%

An overview of the utilisation of microalgae biomass derived from nutrient recycling of wet market wastewater and slaughterhouse wastewater

2017

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“…Out of a number of support materials commonly used for the adherence and growing of anaerobic biomass there are the following: coconut shells (Torres et al, 2003), porous ceramics (Zellner et al, 1987;Kawasc et al, 1989;Gourari & Achkari-Begdouri, 1997), nylon fibers (Chaiprasert et al, 2003), PVC rings (Ruiz et al, 1997 andShow &Tay, 1999).…”

Section: Introductionmentioning

confidence: 99%

Development of biofilm in anaerobic reactors treating wastewater from coffee grain processing

Fia¹,

Borges²,

Matos³

et al. 2010

Rev. bras. eng. agríc. ambient.

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In recent decades the use of anaerobic fixed bed reactors has been established in Brazil for the treatment of different effluents. As the capability of retaining microorganisms by support media (fixed bed) is a factor influencing the performance of these reactors, the present study aims at evaluating the influence of three fixed bed on the effectiveness of treating an effluent with high pollution potential: wastewater from coffee grain processing (WCP), with organic matter concentrations varying from 812 to 5320 mg L -1 in the form of chemical oxygen demand (COD). Support media used for the immobilization of biomass were: blast furnace slag, polyurethane foam and #2 crushed stone with porosities of 53, 95 and 48%, respectively. The mean efficiency of COD removal in the reactor filled with polyurethane foam was 80%, attributed to its higher porosity index, which also provided greater retention and fixation of biomass which, when quantified as total volatile solids, was found to be 1301 mg g -1 of foam. The biofilm was made up of various microorganisms, including rod, curved rods, cocci, filaments and morphologies similar to Methanosaeta sp. and Methanosarcina sp.Key words: anaerobic treatment, microbial biomass, support media, coffee Desenvolvimento de biofilme em reatores anaeróbios tratando água residuária do processamento dos frutos do cafeeiro RESUMO Nas últimas décadas tem-se registrado, no Brasil, o uso de reatores anaeróbios de leito fixo para o tratamento de diversos tipos de efluentes. Uma vez que a capacidade de retenção de micro-organismos pelo meio suporte (leito fixo) é fator de influência no desempenho desses reatores, buscou-se, com a realização do presente estudo, avaliar a influência do leito fixo na eficiência de três unidades tratando um efluente com elevado potencial poluidor: água residuária do processamento dos frutos do cafeeiro (ARC), com concentração de matéria orgânica variando entre 812 e 5.320 mg L -1 na forma de DQO. Os tipos de suporte utilizados na imobilização da biomassa foram: escória de alto-forno, espuma de poliuretano e brita nº 2, com índice de vazios de 53, 95 e 48%, respectivamente. A eficiência média de remoção de DQO no reator preenchido com espuma de poliuretano foi de 80%, atribuída ao seu maior índice de vazios o qual proporcionou também maior retenção e fixação da biomassa que, quantificada na forma de SVT, foi equivalente a 1.301 mg g -1 de espuma. O biofilme apresentou variedade de microrganismos tendo-se registrado bacilos, bacilos curvos, cocos, filamentos, e morfologias semelhantes a Methanosaeta sp. e Methanosarcina sp.. Palavras-chave:tratamento anaeróbio, biomassa microbiana, meio suporte, café 1 DEA/UFV. Av. PH Rolfs s/n. -Campus da UFV. CEP 36570-000, Viçosa, MG.

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“…However, such lagoons are vulnerable to severe weather conditions. In North Carolina, Hurricane Floyd broke several swine waste treatment lagoons in 1999, resulting in waste contamination in receiving watercourses.Anaerobic digestion has been widely used for the treatment of high-strength industrial wastewaters and municipal waste sludge (Colleran et al, 1998;Dinsdale et al, 1997;Fitzgerald, 1996;Hamdi, 1996;Han and Dague, 1997;Lu et al, 1995;Maloney et al, 1998;Ruiz et al, 1997). It has also been applied to swine waste treatment (Boopathy, 1998;Cseh et al, 1984;Hill and Bolte, 2000;Lo et al, 1994 Montalvo, 1995).…”

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confidence: 99%

Swine Wastewater Treatment in Anaerobic Digesters With Floating Medium

Ji¹,

Liu²

2002

Transactions of the ASAE

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ABSTRACT.A 20-L attached-growth anaerobic system with floating plastic Ballast rings as a medium has been studied for swine wastewater [chemical oxygen demand (COD) wine production has become one of the key agricultural industries in the U.S. in recent years. Over one hundred million hogs were produced in this country in 1998 (USDA, 1999). These hogs generated almost two hundred million tons of solid waste a year. Large amounts of swine waste cause environmental concerns such as greenhouse gas and odor emission and potential nutrient contamination to surface and ground waters. Currently, the anaerobic lagoon is the most widely used technology for swine waste treatment in the southeastern region of the U.S. However, such lagoons are vulnerable to severe weather conditions. In North Carolina, Hurricane Floyd broke several swine waste treatment lagoons in 1999, resulting in waste contamination in receiving watercourses.Anaerobic digestion has been widely used for the treatment of high-strength industrial wastewaters and municipal waste sludge (Colleran et al., 1998;Dinsdale et al., 1997;Fitzgerald, 1996;Hamdi, 1996;Han and Dague, 1997;Lu et al., 1995;Maloney et al., 1998;Ruiz et al., 1997). It has also been applied to swine waste treatment (Boopathy, 1998;Cseh et al., 1984;Hill and Bolte, 2000;Lo et al., 1994 Montalvo, 1995). The process converts organic waste into biogas (a gas mixture of approximately 70% CH 4 and 30% CO 2 ) that can be used to generate heat and/or power. Anaerobic digesters have several advantages over traditional lagoons. In open anaerobic lagoons, some odorous organic intermediates of anaerobic degradation (e.g., volatile fatty acids) volatilize through the surface, causing odor emission. In a completely closed anaerobic digester, more thorough digestion can be achieved with much less odorous biodegradation intermediates leaving the digester, which significantly reduces odor emission.The closed anaerobic digester also greatly reduces ammonia emission to the atmosphere. Biogas produced from the digester can be collected and utilized as an energy source, and methane emission to the atmosphere can be prevented. Methane is one of the greenhouse gases that cause increased atmospheric heat retention because these gases act as a blanket that retains solar heat in the atmosphere, resulting in an increased global surface temperature (El-Fadel and Massoud, 2001;Pipatti et al., 1996). CH 4 is very effective in absorbing infrared radiation, and it has 21 times the warming potential of CO 2 (Calander, 1995). Anaerobic digesters also have advantages over aerobic activated sludge or aeration systems that are commonly used for municipal wastewater treatment. The former produces energy, while the latter consumes energy for aeration. A disadvantage of anaerobic digestion, compared to aeration, is that a longer hydraulic retention time (HRT) is required for the anaerobic process.To improve the performance of anaerobic digestion, several types of attached-growth anaerobic digesters (AGADs) have been developed, ...

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Treatment of slaughterhouse wastewater in a UASB reactor and an anaerobic filter

Cited by 127 publications

References 15 publications

An overview of the utilisation of microalgae biomass derived from nutrient recycling of wet market wastewater and slaughterhouse wastewater

An overview of the utilisation of microalgae biomass derived from nutrient recycling of wet market wastewater and slaughterhouse wastewater

Development of biofilm in anaerobic reactors treating wastewater from coffee grain processing

Swine Wastewater Treatment in Anaerobic Digesters With Floating Medium

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