SOIL ENV Flashcards
SOIL POIL
what is Soil Pollution?
Addition of substances which adversely affect the quality of soil or its fertility is
known as Soil Pollution.
Types of
Soil pollution
Solid waste
FLY-ASH
Fertilizers and pesticides from agricultural use
Acid rain and dry deposition
Sources of soil pollution
oil and fuel dumping
acid rain
electronic waste
industrial accedients
Industrial sources
Fly ash
Acids
Dyes
Petroleum hydrocarbons
Lead
heavy metals
Control of Soil Pollution
Stopusage of plastic bags
Sewage and drainage treatment
Industrial waste treatement
Biological waste should be separetly collected and incenirated
Green Recycle of hazardous waste
Polluted Soil Remediation Techniques
Removal to Landfill
Physical Processes
Biological Processes
Chemical Processes
Stabilization/Solidification
Thermal Process
Remediation Requirements
Assesment
Remedial requirment
Monitoring
Remediation Techniques for Contaminated Sites
Remediation Is Achieved By:
Removal or destruction of contaminants
Converting contaminants to a less toxic, mobile or reactive form
Isolation of the contaminant from the receptor
disposal to land fill technique
Containment & Attenuation:
Containment:caping ,cover system and breaklayers
Attenuation :physical , chemical or biological.
Physical proccess Remediation methods
Separate contaminants from uncontaminated material by exploiting differences in
their physical properties.
Concentrating the contaminated material
Further treatment or disposal
Washing and sorting treatments
Extraction treatments
Biological proccess Remidiation methods
Degradation of contaminants to harmless end products
Achieving these optimum conditions
In situ or ex situ biological degradation processes
Aerobic or anaerobic biological process
Chemical proccess remediation proccess
Oxidation
Chemical Extraction
pH Adjustment
Stabilization/solidifcation remediation proccess
Solidifying contaminated materials
Converting contaminants into less mobile chemical forms
Thermal Remediation Proccess
he volatile contaminants are evaporated and subsequently removed from the exhaust gases
Useful for the treatment of organic contamination and mercury contaminated soils
thermal Remedial methods
Inceneration , vetrification