SOIL ENV

Question 1

what is Soil Pollution?

Answer 1

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

Question 2

Types of
Soil pollution

Answer 2

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

Question 3

Sources of soil pollution

Answer 3

oil and fuel dumping
acid rain
electronic waste
industrial accedients

Question 4

Industrial sources

Answer 4

Fly ash
Acids
Dyes
Petroleum hydrocarbons
Lead
heavy metals

Question 5

Control of Soil Pollution

Answer 5

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

Question 6

Polluted Soil Remediation Techniques

Answer 6

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

Question 7

Remediation Requirements

Answer 7

Assesment
Remedial requirment
Monitoring

Question 8

Remediation Techniques for Contaminated Sites

Answer 8

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

Question 9

disposal to land fill technique

Answer 9

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

Question 10

Physical proccess Remediation methods

Answer 10

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

Question 11

Biological proccess Remidiation methods

Answer 11

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

Question 12

Chemical proccess remediation proccess

Answer 12

Oxidation
Chemical Extraction
pH Adjustment

Question 13

Stabilization/solidifcation remediation proccess

Answer 13

Solidifying contaminated materials
 Converting contaminants into less mobile chemical forms

Question 14

Thermal Remediation Proccess

Answer 14

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

Question 15

thermal Remedial methods

Answer 15

Inceneration , vetrification

Question 16

selecting remedial options according to :

Answer 16

applicability
effectiveness
limitation
cost