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  • 1
    Online Resource
    Online Resource
    ACV ambiental de ETE que emprega lodos ativados como pós tratamento de reator UASB
    Companhia Brasileira de Producao Cientifica ; 2021
    In:  Revista Ibero-Americana de Ciências Ambientais Vol. 12, No. 3 ( 2021-01-13), p. 312-322
    Details
    In: Revista Ibero-Americana de Ciências Ambientais, Companhia Brasileira de Producao Cientifica, Vol. 12, No. 3 ( 2021-01-13), p. 312-322
    Abstract: Os sistemas de tratamento de esgoto possuem a função de minimizar os impactos ambientais do lançamento de efluentes no meio ambiente, mas eles próprios apresentam-se como um elemento impactante ao longo do seu ciclo de vida, pelas emissões e consumos que ocorrem ao longo do tratamento. O presente estudo teve por objetivo realizar a avaliação de ciclo de vida ambiental (ACV - A) de uma estação de tratamento de esgoto (ETE), dotada de lodos ativados, como pós-tratamento de reatores anaeróbios - UASB. Os resultados evidenciaram que os gases metano (CH4) e dióxido de enxofre (SO2), emitidos para a atmosfera, após a queima parcial do biogás em queimadores abertos, são os principais responsáveis pelos impactos nas categorias de mudanças climáticas (MC) e acidificação terrestre (AT), respectivamente. O alto consumo de energia no reator aeróbio, para oxigenação, também contribuiu para as categorias de acidificação terrestre e formação de ozônio. Com relação à categoria de eutrofização água doce (EUT-AD), o processo que mais contribuiu foi o lançamento do efluente tratado em corpo receptor, pela emissão de fósforo. Os resultados reportados contribuem para uma maior discussão dos processos de tratamento de esgoto, bem como de alternativas de gerenciamento de biogás, empregados em países em desenvolvimento.
    Type of Medium: Online Resource
    ISSN: 2179-6858
    URL: Article
    DOI: 10.6008/CBPC2179-6858.2021.003.0026
    Language: Unknown
    Publisher: Companhia Brasileira de Producao Cientifica
    Publication Date: 2021
    detail.hit.zdb_id: 2641297-4
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    Online Resource
  • 2
    Online Resource
    Online Resource
    Gestão sustentável do saneamento Nota Técnica 1 - Avaliação da sustentabilidade em sistema de esgotamento sanitário
    Zeppelini Editorial e Comunicacao ; 2022
    In:  Cadernos Técnicos Engenharia Sanitária e Ambiental Vol. 2, No. 5 ( 2022), p. 5-21
    Details
    In: Cadernos Técnicos Engenharia Sanitária e Ambiental, Zeppelini Editorial e Comunicacao, Vol. 2, No. 5 ( 2022), p. 5-21
    Abstract: Como escolher a alternativa de esgotamento sanitário mais sustentável? Técnicos e tomadores de decisão da área de saneamento normalmente encontram dificuldades na escolha dos critérios a serem avaliados para sistemas de esgotamento sanitário. Para guiar este processo, esta Nota Técnica, com base em pesquisa bibliográfica, apresenta cinco dimensões da sustentabilidade (ambiental, econômica, social, técnica e institucional) e os indicadores/critérios mais utilizados para cada dimensão. Também são elencadas as principais ferramentas de agregação destes indicadores, o que possibilita a criação de um índice único para auxiliar no processo de escolha da alternativa mais sustentável adequada ao contexto local.
    Type of Medium: Online Resource
    ISSN: 2764-5576
    URL: Issue
    URL: Journal
    URL: Article
    DOI: 10.5327/276455760205
    DOI: 10.5327/27645576
    DOI: 10.5327/276455760205001
    Language: Portuguese
    Publisher: Zeppelini Editorial e Comunicacao
    Publication Date: 2022
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    Online Resource
  • 3
    Online Resource
    Online Resource
    Sustainability assessment of sludge and biogas management in wastewater treatment plants using the LCA technique
    Instituto de Pesquisas Ambientais em Bacias Hidrograficas (IPABHi) ; 2019
    In:  Ambiente e Agua - An Interdisciplinary Journal of Applied Science Vol. 14, No. 5 ( 2019-09-24), p. 1-
    Details
    In: Ambiente e Agua - An Interdisciplinary Journal of Applied Science, Instituto de Pesquisas Ambientais em Bacias Hidrograficas (IPABHi), Vol. 14, No. 5 ( 2019-09-24), p. 1-
    Abstract: Upflow anaerobic sludge blanket reactors (UASBs) used in sewage treatment generate two useful byproducts: sludge and biogas. This study evaluated the sustainability of four different scenarios for the treatment and final destination of biological sludge and biogas in a medium-sized wastewater treatment plant (WWTP) in South Brazil. At this plant, the sludge is sanitized by Prolonged Alkaline Stabilization and applied to agriculture (base scenario).  Scenario 1 is about biogas use to dry sludge, which is taken to be used in agriculture. In Scenarios 2 and 3 the heat of the sludge burning is used for drying and sanitation. Finally, in Scenario 3 the ashes are destined to landfills. An environmental impact assessment was performed through life-cycle assessment using the ReCiPe 2016 evaluation method. Social life-cycle assessment indicators, adapted and developed for WWTPs, were used for social assessment. Economic assessment was performed through the analysis of life-cycle costs. The dashboard of sustainability (DoS) method was used for global assessment of sustainability. For overall sustainability assessment, Scenario 1 had the highest score (678 points) (best scenario) in the DoS. The environmental dimension was what facilitated this scenario. For this dimension, the following indicators presented the highest points when compared to the other scenarios: soil acidification, ozone formation, terrestrial ecosystem. The base scenario had the lowest score (worst case scenario) (375 points).
    Type of Medium: Online Resource
    ISSN: 1980-993X
    URL: Article
    DOI: 10.4136/ambi-agua.2371
    Language: Unknown
    Publisher: Instituto de Pesquisas Ambientais em Bacias Hidrograficas (IPABHi)
    Publication Date: 2019
    detail.hit.zdb_id: 2389901-3
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    Online Resource
  • 4
    Online Resource
    Online Resource
    Evaluation of the environmental life cycle of an STP that employs a low-rate trickling filter as post-treatment of a UASB reactor and different sludge-management alternatives
    Instituto de Pesquisas Ambientais em Bacias Hidrograficas (IPABHi) ; 2021
    In:  Ambiente e Agua - An Interdisciplinary Journal of Applied Science Vol. 16, No. 3 ( 2021-05-20), p. 1-
    Details
    In: Ambiente e Agua - An Interdisciplinary Journal of Applied Science, Instituto de Pesquisas Ambientais em Bacias Hidrograficas (IPABHi), Vol. 16, No. 3 ( 2021-05-20), p. 1-
    Abstract: This study aimed to undertake an environmental life cycle assessment (LCA) of a sewage treatment plant (STP) equipped with low-rate trickling filters (TFs) as post-treatment of upflow anaerobic sludge blanket (UASB). The STP is located in South Brazil and uses landfill and agriculture as sludge-disposal alternatives. The evaluation was performed using the LCA technique and SimaPro® 9 software. The results revealed that the gases methane (CH4) and sulfur dioxide (SO2), emitted into the atmosphere after the partial burning of the biogas in flares, are mainly responsible for impacts in the categories of global warming (GW) and terrestrial acidification (TA), respectively. Due to the low rate of hydraulic sewage application in TFs, nitrous oxide (N2O) emissions stood out due to their high impact in the category of stratospheric ozone depletion (SOD). The use of sludge in agriculture obtained a greater potential for environmental impact compared to landfills in five of the eight categories evaluated. The main impacts of agricultural use were in the category of human toxicity (HT), due to the high concentration of zinc present in the sludge, and in the category TA, due to the emission of ammonia (NH3) during hygienization of the sludge. In turn, the main positive aspects were avoided products, such as urea, phosphate fertilizer and limestone. The results contribute to a greater discussion of sewage-treatment processes, as well as sludge-management alternatives used in developing countries.
    Type of Medium: Online Resource
    ISSN: 1980-993X
    URL: Article
    DOI: 10.4136/ambi-agua.2648
    Language: Unknown
    Publisher: Instituto de Pesquisas Ambientais em Bacias Hidrograficas (IPABHi)
    Publication Date: 2021
    detail.hit.zdb_id: 2389901-3
    Location Call Number Limitation Availability
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    Online Resource
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