SOIL ENV Flashcards

SOIL POIL

1
Q

what is Soil Pollution?

A

Addition of substances which adversely affect the quality of soil or its fertility is
known as Soil Pollution.

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2
Q

Types of
Soil pollution

A

Solid waste
FLY-ASH
Fertilizers and pesticides from agricultural use
Acid rain and dry deposition

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3
Q

Sources of soil pollution

A

oil and fuel dumping
acid rain
electronic waste
industrial accedients

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4
Q

Industrial sources

A

Fly ash
Acids
Dyes
Petroleum hydrocarbons
Lead
heavy metals

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5
Q

Control of Soil Pollution

A

Stopusage of plastic bags
Sewage and drainage treatment
Industrial waste treatement
Biological waste should be separetly collected and incenirated
Green Recycle of hazardous waste

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6
Q

Polluted Soil Remediation Techniques

A

Removal to Landfill
Physical Processes
Biological Processes
Chemical Processes
Stabilization/Solidification
Thermal Process

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7
Q

Remediation Requirements

A

Assesment
Remedial requirment
Monitoring

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8
Q

Remediation Techniques for Contaminated Sites

A

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

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9
Q

disposal to land fill technique

A

Containment & Attenuation:
Containment:caping ,cover system and breaklayers
Attenuation :physical , chemical or biological.

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10
Q

Physical proccess Remediation methods

A

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

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11
Q

Biological proccess Remidiation methods

A

Degradation of contaminants to harmless end products
 Achieving these optimum conditions
 In situ or ex situ biological degradation processes
 Aerobic or anaerobic biological process

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12
Q

Chemical proccess remediation proccess

A

Oxidation
Chemical Extraction
pH Adjustment

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13
Q

Stabilization/solidifcation remediation proccess

A

Solidifying contaminated materials
 Converting contaminants into less mobile chemical forms

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14
Q

Thermal Remediation Proccess

A

he volatile contaminants are evaporated and subsequently removed from the exhaust gases
 Useful for the treatment of organic contamination and mercury contaminated soils

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15
Q

thermal Remedial methods

A

Inceneration , vetrification

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16
Q

selecting remedial options according to :

A

applicability
effectiveness
limitation
cost