Avaliação química da lagoa de amortecimento após acidente na região industrial da cidade de Ibiporã-PR
On the morning of August 20, 2014 explosion and fire occurred in one of the industries located in the park of the industries in the city of Ibiporã, BR 369. The accident caused leak acids that reached a lake causing large fish kills. After this accident the industry has monitored some physical-chemi...
| Autor principal: | Anjos, Luiz Carlos Giachello dos |
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| Formato: | Trabalho de Conclusão de Curso (Graduação) |
| Idioma: | Português |
| Publicado em: |
Universidade Tecnológica Federal do Paraná
2020
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| Assuntos: | |
| Acesso em linha: |
http://repositorio.utfpr.edu.br/jspui/handle/1/12324 |
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| Resumo: |
On the morning of August 20, 2014 explosion and fire occurred in one of the industries located in the park of the industries in the city of Ibiporã, BR 369. The accident caused leak acids that reached a lake causing large fish kills. After this accident the industry has monitored some physical-chemical parameters such as pH, which reached a value of approximately zero. In this work the lake water analyzes were carried out on site at different depths (20 cm from the surface, the water column and sediment near) with the help of portable and boat, with the purpose to evaluate parameters such as pH, oxygen dissolved, temperature, conductivity. Analyses of alkalinity and hardness were carried out in the laboratory in a maximum of 48 hours after collection. The test results were satisfactory in accordance with current resolution No. 357/05 of CONAMA. However, conductivity, although there is no specific legislation that determines the maximum allowable values, showed values greater than 100 μS. cm-1, indicating possibly an impacted environment. Collection of soil samples, water and sediment were performed for soil pH evaluation and metals such as Chromium, Lead, Manganese, Copper and Zinc in samples of water and sediment by atomic absorption spectrometry with flame atomization. The values found for zinc and copper in lake sediments have exceeded the maximum extent permitted by CONAMA 344/04, indicating contamination by industrial activity. Although not included in CONAMA, the value found for Manganese on sediment samples reached pollutant concentrations in the environment. The concentration of metals in water samples, with the exception of copper, was within the limits set by CONAMA. The lead and chromium metals were found below the detection limit of the technique. Regarding the pH analysis of soil samples, the results did not show an acid soil, even in the path taken by the acid leak. The measures adopted by the industry for remediation of the site affected by the accident have aided in the recovery of the environment. However, this type of accident should be avoided by appropriate industrial facilities and training of human resources in the prevention of accidents, it is not always possible to recover the environmental damage caused by human activities. |
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