| Article ID: | iaor20084468 |
| Country: | Brazil |
| Volume: | 23 |
| Issue: | 3 |
| Start Page Number: | 463 |
| End Page Number: | 473 |
| Publication Date: | Sep 2003 |
| Journal: | Pesquisa Operacional |
| Authors: | Costa R.H.R., Medri W. |
| Keywords: | water, optimization |
This article presents the results from the monitoring of a system of ponds for the treatment of piggery wastes, carried out during a 20 months period, with the objective to determine design parameters for the optimization of the treatment system. A series composed of two anaerobic ponds, one facultative pond and one water hyacinth pond, gave an efficiency of 97% in the removal of BODS, 93% for total phosphorus, 91% for total Kjeldahl nitrogen and a removal of 7 log units for fecal coliforms. A model of the optimization incurred in the treatment of these wastes was developed, within economic concepts.