Artículos de revistas
Evaluation of the water quality and auto-purification from the MEIO stream, LEME (SP)
Avaliação da qualidade da água e autodepuraç ão do ribeirão do meio, LEME (SP)
Fecha
2008-01-01Registro en:
Engenharia Sanitaria e Ambiental, v. 13, n. 3, p. 329-338, 2008.
1413-4152
10.1590/s1413-41522008000300013
2-s2.0-53549132256
Autor
Engenheiro Ambiental
Universidade Estadual Paulista (UNESP)
Geólogo
Geociências E
Atuando Como
Biólogo
Engenharia Ambiental
RTI Nas Faculdades COC
Engenheiro Civil.
UFMT
Engenheiro Civil
Universidade Estadual de Ponta Grossa (UEPG)
Universidade de São Paulo (USP)
Institución
Resumen
This investigation utilized hydrochemical relations to evaluate possible anthropogenic inputs at Meio Stream, São Paulo State. Realized three sampling of water during the months of February, April and July/2005, in five samplingpoints analyzing: discharge, temperature, turbidity, pH, electrical conductivity (EC), dissolved oxygen (DO), TDS (total dissolved solids), TSS (total suspended solids), Ca2+, Mg2+, Na+, K+, HCO3-, Ct, SO42; PO43- and NO3-; The characteristics of water close to spring until Leme city allow concluding that there is a small interference in its quality, however the absence of treatment of domestic wastewater at Leme city reduced its quality. It was applied the QUAL 2Kmodeling to evaluate the Meio Stream auto-purification identified the auto-purification zones and indicated the necessity of secondary wastewater treatment, with 76% of efficiency.