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Estudo sobre a ocorrência de Daphnia spp. em Estações de Tratamento de Águas Residuais Urbanas
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| 5.43 MB | Adobe PDF |
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Abstract(s)
O presente trabalho enquadra-se na unidade curricular “Estágio Profissionalizante” do mestrado em Gestão Ambiental na Escola Superior Agrária – ESAC do Instituto Politécnico de Coimbra – IPC. A temática do estudo surgiu por uma necessidade apresentada pela Águas do Centro Litoral, que buscou a instituição com o objetivo de uma cooperação técnica para tentar encontrar a solução do problema do aparecimento do microcrustáceo Daphinia ssp. na instalação da Estação de Tratamento de Águas Residuais (ETAR) de Fátima.Em alguns tipos de ETAR a espécie é utilizada nas lagoas de estabilização, para o controlo de fitoplanctons, já que são essas são as principais fontes de alimento do microcrustáceo e faz com que o ambiente permaneça em equilíbrio. Fora desse contexto a presença da Daphinia ssp. em outras etapas como o da decantação pode causar efeitos negativos no tratamento, comprometendo a qualidade da água final tratada. O presente trabalho teve como objetivo avaliar a presença do microcrustáceo Daphinia ssp, na estação de tratamento de águas residuais de Fátima. Para o desenvolvimento do trabalho foram disponibilizados, pela entidade gestora da instalação, os dados de monitorização da água durante os anos de 2017 e 2022. Como durante o período estudado tivemos a pandemia do COVID-19, em um primeiro momento foi identificado como o coronavírus influenciou na dinâmica da instalação. Logo após foi feita a análise estatística por meio do programa MATLab. Os resultados mostraram que a pandemia do COVID-19 provocou alterações na dinâmica normal da ETAR. E que parâmetros como CBO, CQO, PT, NT influencia no aparecimento da Daphinia ssp. no decantador secundário da ETAR de Fátima.
The current work is part of the curricular unit “Professional Internship” of the master's degree course in Environmental Management at the Escola Superior Agrária – ESAC of the Polytechnic Institute of Coimbra – IPC. Águas do Centro Litoral sought the institution for technical cooperation about the emergence of the microcrustacean called Daphinia ssp. in the installation of the Wastewater Treatment Station (WWTP) in Fátima, this is how the theme of our research initiated. In some types of WWTP, the species is used in stabilization ponds to control phytoplankton, since they are the main sources of food for the microcrustaceans, and this helps to keep the balance of the environment. If it is not for this purpose, the presence of Daphinia ssp. in other stages such as decantation can cause negative effects on the water treatment, compromising the quality of the final treated water. This study aimed to evaluate the presence of the microcrustacean Daphinia ssp in the Fátima wastewater treatment plant. For the development of the research, the management entity of the installation made available water monitoring data during the years 2017 and 2022. During this period, there was the COVID-19 pandemic, and, initially, it was identified that the coronavirus influenced the dynamics of the installation. Afterward, statistical analysis was performed using the MATLab program, and the results showed that the COVID-19 pandemic caused changes in the normal dynamics of the WWTP, and that parameters such as CBO, CQO, PT, NT influenced the emergence of Daphinia ssp. in the Fátima WWTP secondary decanter.
The current work is part of the curricular unit “Professional Internship” of the master's degree course in Environmental Management at the Escola Superior Agrária – ESAC of the Polytechnic Institute of Coimbra – IPC. Águas do Centro Litoral sought the institution for technical cooperation about the emergence of the microcrustacean called Daphinia ssp. in the installation of the Wastewater Treatment Station (WWTP) in Fátima, this is how the theme of our research initiated. In some types of WWTP, the species is used in stabilization ponds to control phytoplankton, since they are the main sources of food for the microcrustaceans, and this helps to keep the balance of the environment. If it is not for this purpose, the presence of Daphinia ssp. in other stages such as decantation can cause negative effects on the water treatment, compromising the quality of the final treated water. This study aimed to evaluate the presence of the microcrustacean Daphinia ssp in the Fátima wastewater treatment plant. For the development of the research, the management entity of the installation made available water monitoring data during the years 2017 and 2022. During this period, there was the COVID-19 pandemic, and, initially, it was identified that the coronavirus influenced the dynamics of the installation. Afterward, statistical analysis was performed using the MATLab program, and the results showed that the COVID-19 pandemic caused changes in the normal dynamics of the WWTP, and that parameters such as CBO, CQO, PT, NT influenced the emergence of Daphinia ssp. in the Fátima WWTP secondary decanter.
Description
Keywords
Águas Residuais ETAR