changing environment urban contaminants of concern ◦ heavy metals ◦ polycyclic aromatic...
TRANSCRIPT
The Use of Natural Drainage Systems for Pollutant
Collection and Remediation in Urban Areas
Changing Environment
Urban Contaminants of Concern◦ Heavy Metals◦ Polycyclic Aromatic Hydrocarbons (PAHs)
In Situ Remediation◦ Mechanisms ◦ Influencing Factors
Conclusions
Overview
Increasing urban/suburban development
◦ Transportation
◦ Impermeable area
◦ Water management
◦ Soil contamination
Changing Environment
Heavy Metals
◦ Pb, Mn, Cu, Zn◦ Sources
Polycyclic Aromatic Hydrocarbons
◦ High/Low molecular weight◦ Sources
Urban Contaminants of Concern
PAH Mechanisms
◦ Rhizospheric Biodegradation
◦ Phytodegradation
◦ Phytoaccumulation
◦ Phytostabilization
Heavy Metal Mechanisms
◦ Phytoaccumulation
In Situ Remediation
Retention Time◦ Soil profile◦ Plant selection
Climatic Considerations◦ Plant selection◦ Loading rate
Long Term Effects
Factors Influencing Performance of Natural Drainage Systems
Sustainable Infrastructure Need for Long Term Studies
Conclusion