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Publicação
Otimização da Análise e do Tratamento de Águas Residuais na Carmona S.A.
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Orientador(es)
Resumo(s)
Este trabalho teve como objetivo a identificação de oportunidades de melhoria do processo de
tratamento de águas residuais da empresa Carmona S.A., tendo sido possível, em alguns casos, aplicá-las
durante o período de trabalho, de 25 de outubro 2022 a 25 de junho de 2023.
A Carmona S.A. é uma empresa de tratamento e gestão de resíduos perigosos e não-perigosos que
possui diversas vertentes de negócio. Dentro das várias soluções ambientais que a empresa possui, existe
um sistema de tratamento de águas residuais industriais e domésticas, efetuando-se um pré-tratamento,
um tratamento físico-químico e um tratamento biológico.
Este trabalho focou-se na otimização da caracterização da tipologia das águas residuais
descarregadas e na otimização do tratamento biológico com o objetivo de atender aos valores máximos
admissíveis de descarga impostos na atualidade.
Inicialmente, foram identificados os problemas relacionados com a descarga das águas residuais,
pretendendo-se instalar uma sonda multiparamétrica, Proteus 35, para colmatar os problemas
identificados. Não sendo possível completar a instalação da Proteus 35, optou-se por outra alternativa,
uma sonda, Real Tech Aqua BP Series, que possibilita a criação de modelos de leitura de parâmetros
específicos, como a carência química de oxigénio, para cada tipologia de águas através do software
Liquid Ai Data Management.
Identificou-se também que os reatores onde se realiza o tratamento biológico não possuíam
nenhum tipo de tratamento das lamas ativadas, pelo que se instalou um Parafuso desidratador de lamas,
o M-Press 300. Verificou-se um decréscimo do teor de sólidos suspensos totais, um decréscimo da idade
das lamas e um aumento da eficiência do tratamento biológico.
No final do presente trabalho, havia perspetivas da implementação de um novo sistema de
tratamento biológico que iria aumentar a eficiência do mesmo e a capacidade total do tratamento de
águas residuais em cerca de 2,5 vezes, de 1050 m3 para 2700 m3.
This work aimed to identify opportunities to improve the wastewater treatment process of the company Carmona S.A., and it was possible, in some cases, to apply them during the work period, from October 25, 2022, to June 25, 2023. Carmona S.A. is a hazardous and non-hazardous waste treatment and management company that has several business areas. Within the various environmental solutions that the company has, there is a system for treating industrial and domestic wastewater, carrying out pre-treatment, physical-chemical treatment, and biological treatment. This work focused on optimizing the characterization of the type of wastewater discharged and optimizing biological treatment to meet the maximum allowable discharge values currently imposed. Initially, problems related to wastewater discharge were identified, to install a multiparametric probe, Proteus 35, to overcome the identified problems. As it was not possible to complete the installation of Proteus 35, another alternative was chosen, a probe, Real Tech Aqua BP Series, which allows the creation of reading models for specific parameters, such as chemical oxygen demand, for each type of water, through Liquid Ai Data Management software. It was also identified that the reactors where the biological treatment was carried out did not have any activated sludge treatment, which is why a sludge dehydrator screw, the M-Press 300, was installed. There was a decrease in the total suspended solids content, a decrease in the sludge age and an increase in the efficiency of biological treatment. At the end of this work, there were prospects for implementing a new biological treatment system that would increase its efficiency and the total wastewater treatment capacity by around 2.5 times, from 1050 m3 to 2700 m3.
This work aimed to identify opportunities to improve the wastewater treatment process of the company Carmona S.A., and it was possible, in some cases, to apply them during the work period, from October 25, 2022, to June 25, 2023. Carmona S.A. is a hazardous and non-hazardous waste treatment and management company that has several business areas. Within the various environmental solutions that the company has, there is a system for treating industrial and domestic wastewater, carrying out pre-treatment, physical-chemical treatment, and biological treatment. This work focused on optimizing the characterization of the type of wastewater discharged and optimizing biological treatment to meet the maximum allowable discharge values currently imposed. Initially, problems related to wastewater discharge were identified, to install a multiparametric probe, Proteus 35, to overcome the identified problems. As it was not possible to complete the installation of Proteus 35, another alternative was chosen, a probe, Real Tech Aqua BP Series, which allows the creation of reading models for specific parameters, such as chemical oxygen demand, for each type of water, through Liquid Ai Data Management software. It was also identified that the reactors where the biological treatment was carried out did not have any activated sludge treatment, which is why a sludge dehydrator screw, the M-Press 300, was installed. There was a decrease in the total suspended solids content, a decrease in the sludge age and an increase in the efficiency of biological treatment. At the end of this work, there were prospects for implementing a new biological treatment system that would increase its efficiency and the total wastewater treatment capacity by around 2.5 times, from 1050 m3 to 2700 m3.
Descrição
Tese de mestrado, Química Tecnológica , 2023, Universidade de Lisboa, Faculdade de Ciências
Palavras-chave
Tratamento de águas residuais Tratamento biológico Sonda multiparamétrica Parafuso desidratador de lamas Otimização Teses de mestrado - 2024