| Revista: | Scientia agricola |
| Base de datos: | PERIÓDICA |
| Número de sistema: | 000356915 |
| ISSN: | 0103-9016 |
| Autores: | Kunz, Airton1 Steinmetz, Ricardo1 Damasceno, Simone2 Coldebela, Arlei1 |
| Instituciones: | 1Empresa Brasileira de Pesquisa Agropecuaria, Suinos e Aves, Concordia, Santa Catarina. Brasil 2Universidade do Oeste do Parana, Cascavel, Parana. Brasil |
| Año: | 2012 |
| Periodo: | Nov-Dic |
| Volumen: | 69 |
| Número: | 6 |
| País: | Brasil |
| Idioma: | Inglés |
| Tipo de documento: | Artículo |
| Enfoque: | Experimental, analítico |
| Resumen en inglés | Effluents from swine raising can be harmful to the environment if not correctly managed. Nitrogen (N) is usually the main element present at high concentrations in the effluent. Since the use as biofertilizer is not always a feasible alternative, the treatment of swine wastewater is necessary. Variations in N species and water solubility make the treatment difficult and expensive. Additional N removal at low cost via denitrification may be possible by recirculating nitrified effluent in the barns. In this study, raw manure (RM) was homogenized with treated effluent (TE) at RM/(RM + TE) ratios of 1.0, 0.9, 0.8, 0.7, 0.6, 0.5 and 0 in order to simulate the effect of reused water on swine wastewater nitrogen removal. Samples were collected daily during four days and analyzed for pH, oxidation-reduction potential, NH4-N, NO2-N, NO3-N and chemical oxidation demand. The oxidized nitrogen (NOx-N) half-life degradation was estimated using linear regression. NOx-N species half-life less than one day was obtained when treated effluent was combined and thoroughly homogenized with raw manure. It is suggested that combining raw manure with treated effluent (e.g. water reuse) can be a simple and cost-effective strategy to remove nitrogen from swine wastewaters |
| Disciplinas: | Medicina veterinaria y zootecnia, Agrociencias |
| Palabras clave: | Porcinos, Fertilización, Efluentes, Remoción de nutrientes, Reuso de agua, Tratamiento |
| Keyword: | Veterinary medicine and animal husbandry, Agricultural sciences, Swine, Fertilization, Effluents, Nutrient removal, Water reuse, Treatment |
| Texto completo: | Texto completo (Ver HTML) |
