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This work aimed to evaluate the modification of a treatment system comprising two septic tanks and two anaerobic filters whit parallel operation for a model of compartmentalized aeration. This proposal aims to meet to obtain an Operating License (LO) and the discharge parameters. After the adjustments, it was compared the results obtained and the results of the initial situation. The removal of organic matter increased from 59% to 95%, with an average BOD of the effluent around 30 mg/L -1 . The average of residual dissolved oxygen in the effluent was 1,90 ± 1.1 mg/L -1 , the power density of 30 W.m ³, the energy consumption was 37 kWh.inh -1 and the cost of modification per capita was US$ 63,00.

Avaliação da modificação de um sistema composto por tanque séptico e filtro anaeróbio por um modelo de aeração compartimentada