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      Remoção de demanda química de oxigênio e nitrogênio total Kjeldahl de efluente de indústria de vegetais congelados por Reator em Batelada Sequencial Translated title: Chemical Oxygen Demand and Total Kjeldahl Nitrogen removal of frozen vegetables industry wastewater by Sequential Batch Reactor

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          Abstract

          O objetivo deste trabalho foi estudar o tratamento biológico de efluente de indústria de vegetais congelados em Reator em Batelada Sequencial (RBS), verificando o efeito da concentração de Sólidos Suspensos Voláteis (SSV), Demanda Química de Oxigênio inicial (DQOi) e aeração na remoção biológica de carbono e nitrogênio, a fim de obter um efluente tratado que atenda aos padrões de lançamento recomendados pela legislação ambiental brasileira. Nesta pesquisa, o tratamento dos efluentes foi feito em um RBS, utilizando concentração de SSV variando entre 2000 mg.L-1 e 4000 mg.L-1, DQOi variando entre 300 mg.L-1 e 600 mg.L-1, e quantidade de aeração variando entre 3 L.min-1 e 6 L.min-1. Os resultados mostram que a maior eficiência de remoção para DQO foi de 88%, e para nitrogênio total Kjeldahl (NTK) foi de 74,9%. As condições otimizadas para remoção de DQO e NTK do efluente estudado foram: DQO inicial de 600 mg.L-1, aeração de 4,5 L.min-1 e concentração de SSV de 2000 mg.L-1

          Translated abstract

          The objective of this work was to study the biological wastewater treatment from frozen vegetables industry in sequential batch reactor (SBR), verifying the effect of the volatile suspended solids (VSS) concentration, initial Chemical Oxygen Demand (iCOD) and aeration to remove organic carbon and nitrogen in order to obtain a treated wastewater that meets discharge standards recommended by the Brazilian environmental legislation. In this study, the treatment of wastewaters was done in an SBR using VSS concentration ranging from 2000 mg L-1 and 4000 mg.L-1, iCOD ranging from 300 mg.L-1 and 600 mg.L-1, and aeration ranging between 3 L.min-1 and 6 L.min-1. The results show that the major removal efficiency for COD was 88%, and for Total Kjeldahl Nitrogen (TKN) was 74,9%. The optimized conditions for COD and TKN removal of the studied wastewater were: initial COD of 600 mg.L-1, aeration of 4.5 L.min-1and VSS concentration of 2000 mg.L-1

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          Most cited references7

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          Monitoring and control of biological nutrient removal in a Sequencing Batch Reactor

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            Wastewater Technology Fact Sheet: Sequencing Batch Reactors

            (1999)
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              Resolução Consema nº 128/2006

              (2006)
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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Journal
                esa
                Engenharia Sanitaria e Ambiental
                Eng. Sanit. Ambient.
                Associação Brasileira de Engenharia Sanitária e Ambiental - ABES (Rio de Janeiro )
                1809-4457
                September 2013
                : 18
                : 3
                : 235-242
                Affiliations
                [1 ] Universidade de Passo Fundo Brazil
                [2 ] Universidade Estadual de Campinas Brazil
                [3 ] Universidade de Passo Fundo Brazil
                [4 ] Universidade Federal do Rio Grande do Sul Brazil
                Article
                S1413-41522013000300235
                10.1590/S1413-41522013000300006
                15da3c8d-84d8-4f98-9af3-5e3211b47c0a

                http://creativecommons.org/licenses/by/4.0/

                History
                Product

                SciELO Brazil

                Self URI (journal page): http://www.scielo.br/scielo.php?script=sci_serial&pid=1413-4152&lng=en
                Categories
                WATER RESOURCES

                Oceanography & Hydrology
                biologic wastewaters treatment,SBR,foods industry,tratamento biológico de efluentes,RBS,indústria de alimentos

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