Use of multivariate statistics to analyze physical-chemical factors in sludge from a water treatment plant in Rio Grande do Sul
DOI:
https://doi.org/10.5902/2179460X66990Keywords:
Water treatment, Sludge, Multivariate statistical analysisAbstract
The large population advance in urban centers, demand an increase in essential services for human life, one of them being the basic sanitation. This paper investigates the variations in quality of solid waste generated in a water treatment plant (WTP) belonging to the Sanitation Company Riograndense (CORSAN). Using data from daily analyses performed in the periods between January 2015 and December 2019, non-parametric multivariate statistical techniques were applied in order to determine which are the main physicochemical factors that characterize the quality of the residualsludge. The variables researched were: turbidity, pH, dissolved oxygen, biochemical oxygen demand, lead, iron, manganese, aluminum, and hardness. The results showed high correlations between: iron and pH, oxygen and pH, biochemical oxygen demand, and ironand dissolved oxygen and biochemical oxygen demand. They also verified that manganese does not interfere considerably in the sludge generated. The evaluation of the quality of the sludge from water treatment through predetermined physical-chemical parameters makes it possible to infer, for example, how the amount of aluminum sulfate coagulant applied for treatment can substantially influence the level of aluminum present in drinking water as well as in the sludge produced.
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ALMEIDA, T. Análise de componentes principais aplicada a avaliação de atributos de agregados na separação sólido líquido. 2020. 106 f. Dissertação (Mestrado em Engenharia Civil e Ambiental) – Universidade Estadual Paulista Júlio de Mesquita Filho, Rio Claro/SP. 2020.
BRASIL. Lei n. 12.305, de 02 de agosto de 2010. Institui a Política Nacional de Resíduos Sólidos. Ministério do Meio Ambiente Brasília, DF, p. 1-8.2010.
BRASIL. Resolução CONAMA nº 430 de 13 de maio de 2011. Dispõe sobre as condições e padrões de lançamento de efluentes, complementa e altera a Resolução nº 357, de 17 de março de 2005, do Conselho Nacional do Meio Ambiente-
CONAMA. Diário Oficial da União. República Federativa do Brasil, Poder Executivo, Brasília, DF, 16 mai. 2011.
BRASIL. Resolução CONSEMA nº 355 de 17 de março de 2005.Diário Oficial da União. República Federativa do Brasil, Poder Executivo, Brasília, 2005.
CORSAN. Companhia rio-grandense de saneamento, c2020. Regionais, PAMPA. Disponível em: <https://www.corsan.com.br/surpa>. Acesso em: 03 de nov. de 2020.
CORUPÁ. Processo de tratamento de água. 2019.Online. Disponível em: <http://aguasdecorupa.com.br/institucional/processo-de-tratamento-de-agua>. Acesso em: 14 de agost. de 2019.
GUIMARÃES, P. R. B. Métodos quantitativos estatísticos. 1ª ed. Curitiba: IESDE Brasil S.A., 2008.
MIOT, H. A. Avaliação da normalidade dos dados em estudos clínicos e experimentais. Jornal vascular brasileiro, v. 16, n. 2, p. 88-91, 2017.
MONTGOMERY, D. C.; RUNGER, G. C. Estatística aplicada e probabilidade para engenheiros, 2ª. Ed. Rio de Janeiro: Editora LTC, 2003.
REIS, E. L. T., et.al. Identificação da influência do descarte de lodo de estações de tratamento de água. Quimica Nova, 30, 4, 865-872, 2007.
RSTUDIO TEAM. RStudio: Integrated Development for R.. RStudio, PBC, Boston, MA, 2020. Disponível em: < http://www.rstudio.com/>.
R CORE TEAM: A language and environment for statistical computing. R Foundation for Statistical Computing, Vienna, Austria. 2020. Disponível em: < https://www.R-project.R/>.
SANTOS, S. S. A. Caracterização e utilização de resíduo sólido: lodo de eta, como matéria prima para confecção de elementos da construção civil. 2011. 87 f. Dissertação (Mestrado em Química Analítica) – Universidade Federal da Bahia, Salvador/BA. 2011.
SANTOS, F. P. Caracterização e estudo da incorporação do lodo de ETA em argamassa. 2016. 60 f. Monografia (Bacharelado em Engenharia Ambiental e Sanitária) – Universidade Federal do Pampa, Caçapava do Sul/ RS. 2016.
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