Analyze chemistry, microbiological and parasitological of the drinking water in UNESP and wastewater from Jaboticabal – SP, Brazil

Antonio João Scandolera, Julio César Palhares, Jorge Lucas Junior, Luiz Augusto do Amaral, Rafael Paranhos de Mendonça, Gilson Pereira de Oliveira

Abstract


The quality conditions of the water that supplies the UNESP University campus in Jaboticabal city and its wastewater from the Jaboticabal Stream were evaluated by chemical analysis bacteriological and parasitological. Samples were collected weekly from 09/24/98 through 01/28/99, water supply provided by the Municipal Government from an artesian well source and wastewater was took from the Jaboticabal Stream at a point downstream from the town. The parameters analyzed were: water pH, DO, nitrate, nitrite, ammonia, COD and BOD, coliform bacillus and helminths eggs only in wastewater. The results showed with high DO concentrations (6,2 to 8,9 mg/L) in the water supply. BOD was void for all samples, with low COD (0,0 to 18 mg/L). Nitrogen forms showed acceptable values. Wastewater was anoxic in the majority of the samples, but COD and BOD concentrations were reduced in this kind of water (32 to 201 mg/L COD and 18 to 113 mg/L BOD). Nitrate prevailed over nitrite, and ammonia concentrations were too high (0,0 to 13,4 mg/L). As for the bacteriological parameters to 35,3% of the samples of the water of the Campus presented inappropriate for the human consumption. The water from the Cerradinho Stream showed high bacteriological and helminths eggs concentration. It can be concluded that the wastewater must receive treatment to be used by animals or agricola irrigation because of the potential pathogenic organism, ammonia, COD and BOD high concentrations.


Keywords


Quality of the water; Chemical parameters; Fecal coliforms ; Total coliforms.



DOI: http://dx.doi.org/10.5433/1679-0359.2001v22n1p83

Semina: Ciênc. Agrár.
Londrina - PR
E-ISSN 1679-0359
DOI: 10.5433/1679-0359
E-mail: semina.agrarias@uel.br
Este obra está licenciado com uma Licença Creative Commons Atribuição-NãoComercial 4.0 Internacional