Title :
Electrical impedance tomography for underground pollutant detection and polluted lands reclaiming monitoring
Author :
D´Antona, G. ; Rocca, Luca
Author_Institution :
Dipt. di Elettrotecnica, Politecnico di Milano, Italy
fDate :
6/24/1905 12:00:00 AM
Abstract :
Spills and leaking of solvents widely used in many industrial processes have contaminated the environment at many highly industrialized sites and nearby areas. Site assessment and monitoring during remediation of soils and groundwater affected by this kind of contamination is often difficult and expensive Geophysical techniques based on mapping a physical property of soil can be a useful tool for a rapid and fairly economic monitoring during site assessment and, even better, during the remediation process. Among these, Electrical Impedance Tomography (EIT) is an attractive example of inverse problem as a technique for noninvasive diagnosis of conductive materials. This paper describes the tomographic inversion process for 2D and 3D resistive EIT together with some comparison between different algorithms in term of metrological performances.
Keywords :
electric impedance imaging; groundwater; inverse problems; iterative methods; leak detection; least squares approximations; mesh generation; pollution measurement; process monitoring; singular value decomposition; soil; 2D resistive EIT; 3D resistive EIT; damped SVD; electrical impedance tomography; environmental monitoring; exponential conductivity singularity; finite element solver; groundwater; highly industrialized sites; homogeneous mesh elements; inverse problem; iterative methods; leakage detection; least squares error; metrological performances; polluted land reclamation monitoring; process monitoring; site assessment; site remediation; soils; solvent spills; tomographic inversion process; underground pollutant detection; Contamination; Environmentally friendly manufacturing techniques; Geophysical measurements; Impedance; Industrial pollution; Land pollution; Monitoring; Soil; Solvents; Tomography;
Conference_Titel :
Instrumentation and Measurement Technology Conference, 2002. IMTC/2002. Proceedings of the 19th IEEE
Print_ISBN :
0-7803-7218-2
DOI :
10.1109/IMTC.2002.1007097