Avaliação sazonal do potencial de biodegradabilidade e remoção de cargas em efluente industrial via wetland construído
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Data
2016-09
Autores
Orientador
Konrad, Odorico
Banca
Konrad, Odorico
Fernandes, Dangela Maria
Hoehne, Lucélia
Oliveira, Eniz Conceição
Título do periódico
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Título do Volume
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Resumo
É evidente a necessidade de uma integração sistêmica entre tecnologia, economia e meio ambiente. Deste modo, gerir a maximização dos processos industriais contextualizada com uma a gestão ambiental funcional é uma alternativa que visa aproveitar plenamente os recursos hídricos. A indústria de alimentos é um setor extremamente produtivo que gera efluentes com elevadas concentrações de compostos orgânicos. Uma estratégia efetiva de atenuação poluidora e ciclagem destes compostos é através do polimento destes afluentes por wetlands construídos. Desta forma o objetivo deste estudo foi aplicar um sistema wetland construído sub-superfícial de fluxo horizontal, para o polimento de efluente de indústria alimentícia, e avaliar a capacidade de biodegradabilidade de acordo com as condições climáticas e variações de carga orgânica do efluente. Para avaliação efetuou-se campanhas mensais de três dias consecutivos, em cada campanha, quantificou-se parâmetros físico-químicos, que posteriormente foram correlacionados com dados meteorológicos. Os valores de Demanda Bioquímica de Oxigênio e Demanda Química de Oxigênio apresentaram correlações com diferença significante (p<0,05) na primavera (R2=0,99), no inverno (R2=0,99) e no outono (R2=0,77) e no verão (R2=0,32). Na relação (entrada/ saída) de Cor Verdadeira, Sólidos Suspensos Totais e turbidez teve correlação significante em ordem decrescente: verão (p=0,0022), inverno (p=0,0084), o outono (p=0,0159) e não significante na primavera (p=0,0589). Concluiu-se que ocorreram variações significativas decorrente das mudanças de temperatura ambiente, porém, se tratando de variantes sazonais, estes efeitos são inferiores, considerando as influencias a curto prazo das concentrações dos efluentes.
Clearly is the need for a systemic integration between technology, economy and environment. Thus, managing to maximize contextualized industrial processes with a functional environmental management is an alternative that aims to fully utilize water resources. The food industry is an extremely productive sector that generates wastewater with high concentrations of organic compounds. An effective strategy of pollution mitigation and cycling of these compounds is by polishing these tributaries for constructed wetlands. Thus, the aim of this study is to apply a wetland system constructed subsurface horizontal flow, for the food industry effluent polishing, and evaluate the ability of biodegradability according to the climatic conditions and organic load variations of the effluent. For evaluation were performed monthly campaigns of three consecutive days in each campaign, it was quantified physical-chemical parameters, which were correlated with meteorological data. The Biochemical Oxygen Deman and Chemical Oxygen Demand values showed correlations with significant difference (p<0.05) in the Spring (R²=0.99), in Winter (R²=0.99) and Autumn (R²=0.77) and Summer (R²=0.32). In relation (input/output) of CV, TSS and turbidity had significant correlation in decreasing order: Summer (p=0.0022), Winter (p=0.0084), Autumn (p=0.0159) and not significant in the Spring (p=0.0589). It was concluded that there were significant variations resulting from ambient temperature changes, however, when it comes to seasonal variations, these effects are lower, considering the short-term influences of effluent concentrations.
Clearly is the need for a systemic integration between technology, economy and environment. Thus, managing to maximize contextualized industrial processes with a functional environmental management is an alternative that aims to fully utilize water resources. The food industry is an extremely productive sector that generates wastewater with high concentrations of organic compounds. An effective strategy of pollution mitigation and cycling of these compounds is by polishing these tributaries for constructed wetlands. Thus, the aim of this study is to apply a wetland system constructed subsurface horizontal flow, for the food industry effluent polishing, and evaluate the ability of biodegradability according to the climatic conditions and organic load variations of the effluent. For evaluation were performed monthly campaigns of three consecutive days in each campaign, it was quantified physical-chemical parameters, which were correlated with meteorological data. The Biochemical Oxygen Deman and Chemical Oxygen Demand values showed correlations with significant difference (p<0.05) in the Spring (R²=0.99), in Winter (R²=0.99) and Autumn (R²=0.77) and Summer (R²=0.32). In relation (input/output) of CV, TSS and turbidity had significant correlation in decreasing order: Summer (p=0.0022), Winter (p=0.0084), Autumn (p=0.0159) and not significant in the Spring (p=0.0589). It was concluded that there were significant variations resulting from ambient temperature changes, however, when it comes to seasonal variations, these effects are lower, considering the short-term influences of effluent concentrations.
Descrição
Palavras-chave
Alagados construídos; Industria alimentícia; Polimento de efuentes
Citação
TONETTO, Jaqueline Fernandes. Avaliação sazonal do potencial de biodegradabilidade e remoção de cargas em efluente industrial via wetland construído. 2016. Dissertação (Mestrado) – Curso de Ambiente e Desenvolvimento, Universidade do Vale do Taquari - Univates, Lajeado, 14 jan. 2016. Disponível em: http://hdl.handle.net/10737/1082.