Risco de contaminação pela presença de disposição final de resíduos sólidos em bacias de captação superficial de água
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2018-10
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Vulnerability models are important in the study of water contamination
by different soil usage activities. This research’s goal is to evaluate the
contamination risk by the presence of an urban solid waste disposal site
(UWDS) within the surface water catchment basins (SWCB) used in the
public water supply of Goiás, Brazil. Identification and characterization of
SWCBs and UWDSs have been done in a geographical identification system
using the QGis2.12.0 Lyon software. The information overlapping allowed
the identification of SWCBs that had an UWDS within its limits, applying
to them the Susceptibility Index (SI), composed by intrinsic and extrinsic
SWCB characteristics. Calculating the average vulnerability, SWCBs, which
presented the highest risk of water contamination, were selected and had
their UWDSs analyzed by six technical parameters. This way, 204 SWCBs
and 228 UWDSs were identified, out of which 93% were classified as
irregular dumping sites. The SI was calculated for each SWCB that had
the presence of UWDSs within their areas (43 SWCBs with 69 UWDSs),
pointing the 9 most vulnerable ones, which had 18 UWDSs within its limits.
The interdependence of the evaluated parameters allowed to calculate the
risk in these UWDSs. In conclusion, the vulnerability evaluation has been
proven effective and of great relevance in the identification of the SWCBs
most susceptible to water contamination, and it can be applied to other
studies. In Goiás, the analysis allowed the existing risk calculation for each
of the 18 UWDSs, out of which 4 were found high-risk being in need of
priority adequation and remediation.
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Contaminação por lixiviado, Lixão, Qualidade das águas de abastecimento, Vulnerabilidade ambiental, Leachate contamination, Dump, Water supply quality, Environmental vulnerability
Citação
PINHEIRO, Roberta Vieira Nunes; LOBÓN, German Sánz; SCALIZE, Paulo Sergio. Risco de contaminação pela presença de disposição final de resíduos sólidos em bacias de captação superficial de água. Engenharia Sanitaria e Ambiental, Rio de Janeiro, v. 23, n. 5, p. 871-880, 2018. DOI: 10.1590/S1413-41522018174184. Disponível em: https://www.scielo.br/j/esa/a/mvcsPP5gVTW7xK5SGFLXWhm/?lang=pt. Acesso em: 30 jan. 2025.