Evaluation of COD, nitrogen and phosphorus removal efficiency in the co-treatment of sewage with leachate in an activated sludge system
DOI:
https://doi.org/10.14295/holos.v22i1.12463Keywords:
Biological treatment. Sewage. Leachate. Nutrients.Abstract
The co-treatment of landfill leachate and sanitary sewage is a possibility for the treatment of these effluents in the State of Rio de Janeiro. However, such a combination can be harmful to the operation of treatment plants since the physicochemical characteristics of the leachate can negatively influence the efficiency of the activated sludge treatment system. Thus, this work seeks to identify a safe proportion of combination of leachate-sewage that allows for a good efficiency in the treatment of the combined effluent and to identify possible changes in the behavior of the liquid and solid phase of the system. For this, experiments were carried out in batches on a bench scale, considering a sludge age of 30 days and a hydraulic retention time of 24 h. The experiments were carried out with increasing concentrations of leachate in the sanitary sewer, in the proportions of 1,0; 2.5; 5.0 and 10%, having a blank experiment, which consists of sewage without addition of leachate. The physical-chemical parameters COD, N-NH4+, N-NO2-, N-NO3- and P-PO43- were evaluated over time.Downloads
Published
2022-04-29
How to Cite
Ruiz, G. S., Tannuri, S. T., Mauad, C. R., Vendramel, S. M. R., & Veneu, D. M. (2022). Evaluation of COD, nitrogen and phosphorus removal efficiency in the co-treatment of sewage with leachate in an activated sludge system. Holos Environment, 22(1), 1–17. https://doi.org/10.14295/holos.v22i1.12463
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