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Advisor(s)
Abstract(s)
O presente trabalho teve como objetivo caracterizar as águas residuais produzidas num matadouro, determinar as eficiências do processo de tratamento e propor medidas de melhoria. Da caracterização das águas residuais constatou-se que o efluente final cumpriu com os valores limite de emissão, exceto para o fósforo. De um modo geral, obtiveram-se eficiências de remoção dos poluentes superiores a 73%. Em relação aos parâmetros operacionais, verificou-se que o valor de F/M, entre 0,05 e 0,15 kgCBO5.kg-1MLVSS.d-1, é importante para aumentar a eficiência do processo. Aumentando a quantidade de coagulante e floculante a adicionar nas DAF’s, ocorrerá uma maior produção de lamas e consequente remoção de fósforo. Constatou-se que a manutenção adequada da purga de lamas permite a redução da biomassa no reator e aumenta a razão F/M.
The present work aims to characterize the slaughterhouse wastewater treatment, calculate the treatment efficiency and recommend improvement measures. From the wastewater characterization it was noted that the final effluent complies with the emission limit values, except for phosphorus. Overall, removal efficiencies obtained for pollutants were higher than 73%. What concerns the operational parameters, it was found that F/M value, between 0.05 and 0.15 kgCBO5.kg-1MLVSS.d-1, is important to increase efficiency. Increasing the coagulant and flocculant amount in the DAF, the sludge production increases and consequently the phosphorus removal. The sludge purging allows the reduction of biomass in the reactor and increase the F/M ratio.
The present work aims to characterize the slaughterhouse wastewater treatment, calculate the treatment efficiency and recommend improvement measures. From the wastewater characterization it was noted that the final effluent complies with the emission limit values, except for phosphorus. Overall, removal efficiencies obtained for pollutants were higher than 73%. What concerns the operational parameters, it was found that F/M value, between 0.05 and 0.15 kgCBO5.kg-1MLVSS.d-1, is important to increase efficiency. Increasing the coagulant and flocculant amount in the DAF, the sludge production increases and consequently the phosphorus removal. The sludge purging allows the reduction of biomass in the reactor and increase the F/M ratio.
Description
Keywords
matadouros estação de tratamento de águas residuais (ETAR) monitorização slaughterhouse wastewater treatment monitoring
Citation
Pinto, Emília M. Medeiros; Silva, Maria Elisabete Ferreira & Brás, Isabel Paula Lopes (2015). Monitorização do Funcionamento da ETAR de um Matadouro – Caso de Estudo. Millenium, 48 (jan/jun). Pp. 173-183.