environmental decision making and risk management for contaminated ground water and soil remediation...
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Environmental Decision Making and Risk Environmental Decision Making and Risk Management for contaminated ground water and Management for contaminated ground water and
soil remediation using integrated approach of soil remediation using integrated approach of Neuro-fuzzyNeuro-fuzzy
Environmental Management and Analysis Group
ETSEQ, Rovira i Virgili University
Vikas Kumar
Supervisor: Dra. Marta Schuhmacher
Outline
Objectives
Introduction
Work Plan
Summary
Technology overview
The probability of an adverse event and the magnitude of the consequences…
Problems of Environmental Risk : •Measurable, •Subjective, and •Based on multi-criteria
IntroductionRisk
Introduction
Affected surface soil
Affected subsurface soils
Affected Groundwater
Wind erosion
Volatilization
Leaching
Atmospheric dispersion
Accumulation in enclosed space
Groundwater transport
Soil dermal contact and ingestion
Inhalation of vapors and/or particulates
Groundwater ingestion
Surface water, swimming, fish consumption, etc
On-site receptor
Off-site receptor
Source Transport MechanismExposure Media
Receptors
Exposure pathways
Introduction
• Causes:– Agricultural waste– Industrial waste– Effluents from landfills– Petroleum products– Radioactive waste
Ground water and soil Contamination
Introduction
Till now:Tools used:
•Statistical methods•Probabilistic methods•Fuzzy methods
Focused on single pollutant on single ecological processNot dealing with uncertainty Not dealing with multi-criteria and multiple stakeholders.
Why this research?
Technology overview
Fuzzy Logic ?
“Fuzzy logic is a structured, model free estimator that approximates a function through linguistic input/output associations.”
The statement, today is sunny.
•100% true if there are no clouds,
•80% true if there are a few clouds,
•50% true if it's hazy and
•0% true if it rains all day.
Technology overview
Neuro-fuzzyArtificial Neural Network + Fuzzy logic
ObjectiveCreate a methodological model which, taking into account subsoil and contaminants characteristics as well as human and environmental health risks features, help to make decisions in the prioritization about polluted soils remediation.
Work PlanIdentification of process and variables
Uncertainty analysis
Knowledge base
Fuzzy model
Neural-fuzzy model
Network training
Planning Identification Analysis HandlingCommuni-cation & Tracking
• Build the process• Allocate Responsibilities• Determine “What is to be Risk-Managed”
• Comparative Analysis• Assign Attributes• Assign Ownership
• Evaluate the Impact• “A” Risk• “All” Risks
• Prepare Decision-packages
• A Decision-Making Process
• Iterative with Analysis to select mitigation
• Keep everyone aware of decisions made
• Track progress • Evaluate effectiveness
The Basic Risk Management ProcessThe Basic Risk Management ProcessSummary
Acknowledgement• Dra. Marta Schuhmacher• URV for scholarship• Ministerio de Educacion Y Ciencia, Spain for
research grant• Professors and colleges of ETSEQ
