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Chemical and biological treatment of fish canning wastewaters

Cristovão, Raquel; Botelho, Cidália; Martins, Ramiro; Boaventura, Rui
Fonte: Prof. Ebtisam Heikal Publicador: Prof. Ebtisam Heikal
Tipo: Artigo de Revista Científica
Português
Relevância na Pesquisa
76.44%
he main environmental problems of fish canning industries are high water consumption and high organic matter, oil and grease and salt content in their wastewaters. This work aims to analyze the situation (water consumption, wastewater production, wastewater characterization, etc.) of different plants located north of Douro river, in Portugal, in order to propose various solutions to their problems. Thus, initially it was made an identification and implementation of prevent and control pollution measures within the industrial units in order to reduce water consumption, minimize the wastewater production and reduce the pollutant load to treat. Then, the evaluation of wastewater treatability was started through a sedimentation and coagulation-flocculation process, with two organic coagulants (RIPOL 070 and RIFLOC 1815), commonly used in wastewater treatment. Sedimentation experiments showed that the flotation of 54% of oils and greases occurred, and 36% of total suspended solids were removed. The coagulation-flocculation process gave good results, especially in terms of oil and grease and total suspended solids removal. The best suspended solids removal efficiencies were 53% and 79%, using 400 mg/L of RIPOL 070 and 150 mg/L of RIFLOC 1815...

Pollution prevention and wastewater treatment in fish canning industries of Northern Portugal

Cristovão, Raquel; Botelho, Cidália; Martins, Ramiro; Boaventura, Rui
Fonte: IPCBEE, IACSIT Press, Singapore Publicador: IPCBEE, IACSIT Press, Singapore
Tipo: conferenceobject
Português
Relevância na Pesquisa
76.44%
The main environmental problems of fish canning industries are high water consumption and high organic matter, oil and grease and salt content in their wastewaters. This work aims to analyze the situation (water consumption, wastewater production, wastewater characterization, etc.) of different plants located north of Douro river, in Portugal, in order to propose various solutions to their problems. Thus, initially it was made an identification and implementation of prevent and control pollution measures within the industrial units in order to reduce water consumption, minimize the wastewater production and reduce the pollutant load to treat. Then, the evaluation of wastewater treatability was started through a sedimentation and coagulation-flocculation process, with two organic coagulants (RIPOL 070 and RIFLOC 1815), commonly used in wastewater treatment. Sedimentation experiments showed that the flotation of 54% of oils and greases occurred, and 36% of total suspended solids were removed. The coagulation-flocculation process gave good results, especially in terms of oil and grease and total suspended solids removal. The best suspended solids removal efficiencies were 53% and 79%, using 400 mg/L of RIPOL 070 and 150 mg/L of RIFLOC 1815...

Primary treatment optimization of a fish canning wastewater from a Portuguese plant

Cristovão, Raquel; Botelho, Cidália; Martins, Ramiro; Loureiro, José; Boaventura, Rui
Tipo: Artigo de Revista Científica
Português
Relevância na Pesquisa
86.54%
A sequence with three stages was optimized as a primary treatment for wastewaters from a fish canning industry of northern Portugal. Sedimentation tests were assessed at different times. The removal of a high fraction (75%) of oil and grease (O&G) and of some (48%) total suspended solids (TSS) occurred after a settling time of 1.5h. Coagulant dosage and pH value were optimized in the coagulation/flocculation treatment using several organic and inorganic coagulants. Best removal efficiencies (99.2% O&G, 85.8% TSS and 25.2% dissolved organic carbon (DOC)) were reached using 400mg/L of FeCl3 at raw pH wastewater. DAF was also tested, optimizing chamber pressure and recycle ratio. Removals of 94% for O&G and 43% for TSS were achieved. The coupling of the latter two processes was also investigated, but no improvement of the previous results was observed. The best approach proved to be a decantation process followed by coagulation/flocculation treatment. © 2014 The Authors.

Pollution prevention and wastewater treatment in fish canning industries of Northern Portugal

Cristovão, Raquel; Martins, Ramiro; Boaventura, Rui
Fonte: IACSIT Press, Singapoore Publicador: IACSIT Press, Singapoore
Tipo: Artigo de Revista Científica
Português
Relevância na Pesquisa
76.44%
The main environmental problems of fish canning industries are high water consumption and high organic matter, oil and grease and salt content in their wastewaters. This work aims to analyze the situation (water consumption, wastewater production, wastewater characterization, etc.) of different plants located north of Douro river, in Portugal, in order to propose various solutions to their problems. Thus, initially it was made an identification and implementation of prevent and control pollution measures within the industrial units in order to reduce water consumption, minimize the wastewater production and reduce the pollutant load to treat. Then, the evaluation of wastewater treatability was started through a sedimentation and coagulation-flocculation process, with two organic coagulants (RIPOL 070 and RIFLOC 1815), commonly used in wastewater treatment. Sedimentation experiments showed that the flotation of 54% of oils and greases occurred, and 36% of total suspended solids were removed. The coagulation-flocculation process gave good results, especially in terms of oil and grease and total suspended solids removal. The best suspended solids removal efficiencies were 53% and 79%, using 400 mg/L of RIPOL 070 and 150 mg/L of RIFLOC 1815...

Chemical oxidation of fish canning wastewater by fenton’s reagent

Cristovão, Raquel; Gonçalves, Cristiana; Botelho, Cidália; Martins, Ramiro; Boaventura, Rui
Tipo: Artigo de Revista Científica
Português
Relevância na Pesquisa
76.45%
The fish canning industry generates large volume of wastewater for which the treatment is particularly difficult due to the high content of organic matter and salts and to the significant amount of oil and grease they present. In this work, a closed jacketed batch reactor was used to study the feasibility of applying a Fenton reaction step after an activated sludge biological treatment. For this purpose and in order to find optimal conditions, a 33 Box-Behnken full factorial design was used. The predicted optimum value (64% DOC degradation) was found for hydrogen peroxide concentration of 1520 mg/L, iron concentration of 338 mg/L and pH 3.2.

Caracterização, avaliação da biodegradabilidade e tratamento de águas residuais da indústria de conservas de peixe

Pinto, Victor Miguel da Silva
Tipo: masterthesis
Português
Relevância na Pesquisa
36.29%
O não tratamento e o tratamento inadequado das águas residuais industriais diria que é um problema para os coletores públicos, bem como para as ETARs. Normalmente as indústrias alimentares não têm um tratamento adequado para as suas águas residuais. As indústrias conserveiras não fogem à regra e o tratamento que impõem aos seus efluentes antes da sua descarga para a rede pública é insuficiente relativamente aos teores de matéria orgânica, óleos e gorduras e salinidade que estas águas apresentam. Neste contexto, desenvolveu-se um estudo no Instituto Politécnico de Bragança em parceria com a Faculdade de Engenharia da Universidade do Porto, com o objetivo de avaliar a tratabilidade e a biodegradabilidade das águas residuais de uma indústria de conservas de peixe em regime aeróbio e anaeróbio, analisando também a influência da quantidade de matéria orgânica, salinidade e das gorduras do efluente nestes mesmos testes. Para este estudo foram realizadas várias análises de forma a verificar a variabilidade deste tipo de efluentes através da recolha sazonal de amostras e de uma caracterização exaustiva. As amostras foram recolhidas entre novembro de 2013 e junho de 2014, tendo sido caracterizadas cerca de 20 amostras. Os principais resultados da caracterização efetuada permitem identificar uma relação direta entre a quantidade de poluentes (CQO...

Estudo das operações combinadas da desidratação osmotica a vacuo : defumação liquida e secagem em files de bonito (sarda sarda).; Study of the combined operations of the vacuum osmotic dehydration.

David Vivanco Pezantes
Fonte: Biblioteca Digital da Unicamp Publicador: Biblioteca Digital da Unicamp
Tipo: Tese de Doutorado Formato: application/pdf
Publicado em 13/02/2006 Português
Relevância na Pesquisa
26.01%
O bonito (Sarda sarda) é um alimento bem comum na dieta alimentar no litoral brasileiro ainda pouco explorado industrialmente e usado exclusivamente para a indústria do enlatado. O objetivo deste trabalho foi estudar os mecanismos combinados de desidratação osmótica a vácuo, defumação liquida e secagem, avaliando os parâmetros do processamento da desidratação osmótica a vácuo mediante a técnica de superfície de resposta e tratar de buscar uma alternativa de aplicação de uma nova tecnologia em contraposição às técnicas tradicionais de produção de produtos curados que melhorem ditos processos. Tem-se verificado recentemente que a pressão é um parâmetro importante a ser levado em consideração no processo de desidratação osmótica. A velocidade de transferência de massa durante a desidratação osmótica do alimento aumenta em condições de vácuo quando comparado à pressão atmosférica. Isto permite uma redução do tempo de processamento e uma diminuição dos custos energéticos. Tomando em consideração essa vantagem tecnológica, neste trabalho se projetou e construiu um desidratador osmótico por pulso de vácuo. Na salga estudou-se a aplicação de vácuo por pulso empregando uma solução de salmoura...

Fish canning industries of France and Portugal: life histories

Dias, João Ferreira; Guillotreau, Patrice
Fonte: INDEG-ISCTE Publicador: INDEG-ISCTE
Tipo: Artigo de Revista Científica
Publicado em /09/2005 Português
Relevância na Pesquisa
76.44%
The analysis of the parallel developments of fish canning industries of France and Portugal on the basis of extensive data on landing, foreign trade and industrial organization.

Three cutters in Factory #7, Seacoast Canning Co., Eastport, Me. They work regularly whenever there are fish. (Note the knives they use.) Back of them and under foot is refuse. On the right hand is Grayson Forsythe, 7 years old. Middle is George Goodell, 9 years old, finger badly cut and wrapped up. Said, "the salt gets unto the cut." Said he makes $1.50 some days. Left end, Clarence Goodell, 6 years, helps brother. Location: Eastport, Maine.

Hine, Lewis Wickes, 1874-1940, photographer.
Tipo: image; still image; photographic prints
Português
Relevância na Pesquisa
26.01%
Title from NCLC caption card.; Attribution to Hine based on provenance.; In album: Canneries.; Hine no. 2421.

Group of young cutters, Seacoast Canning Co., Factory #2, waiting for more fish. They all work, but they waste a great deal of time as the adults do also, waiting for fish to arrive. Location: Eastport, Maine.

Hine, Lewis Wickes, 1874-1940, photographer.
Tipo: image; still image; photographic prints
Português
Relevância na Pesquisa
26.12%
Title from NCLC caption card.; Attribution to Hine based on provenance.; In album: Canneries.; Hine no. 2429.

THE FISH CANNING INDUSTRY

Hilliard, C. M.
Tipo: text
Publicado em /03/1918 Português
Relevância na Pesquisa
36.01%