Full text
| |
| Author(s): |
Giovanni Chaves Penner
Total Authors: 1
|
| Document type: | Doctoral Thesis |
| Press: | São Carlos. |
| Institution: | Universidade de São Paulo (USP). Escola de Engenharia de São Carlos (EESC/SBD) |
| Defense date: | 2005-06-17 |
| Examining board members: |
Harry Edmar Schulz;
Dante Contin Neto;
Vagner Roberto Elis;
Edson Cezar Wendland
|
| Advisor: | Harry Edmar Schulz |
| Abstract | |
This research introduces results of field and laboratory applications and numerical simulation to assess a site of oil waste disposal, in Ribeirão Preto, São Paulo, Brazil. The laboratorial methodology applied was useful, but there were also cases where the first try was not adequate. Additionally, the commercial numeric software selected to simulate site conditions was properly handled and applicable to expedited site assessment. The results of metals concentration in ground water highlight lead and aluminum as the main contaminants. In terms of PAHs in soil, in general, low concentrations (in some cases not detectible) were observed, where phenanthrene was the compound with the highest concentration, however without reference level. The naphthalene, has reference level, present concentrations much lower than the reference level. The numerical simulation results are presented in seven subsurface layers, which in a plan view the grid was divided in 50,0 m per 50,0 m. A lead contamination was simulated in the transport model, with 10 years of temporal discretization, and with initial and boundary concentrations compatible with measures in monitoring wells (25 μg/L). The results show contamination in the disposal area, and alteration in the neighboring areas. The present research represents a contribution to the methodology for similar site assessment. (AU) | |