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Online Course

Environmental Remediation of Contaminated Sites

Indian Institute of Technology Roorkee and NPTEL via Swayam

53

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Overview

The course details the usual remediation techniques practiced worldwide and provide an understanding of the relevant theoretical concepts. The current course will enable a student to:
• Develop understanding of integrated approaches to remediating contaminated sites.
• Develop the ability to screen, choose and design appropriate technologies for remediation.

INTENDED AUDIENCE:
Environmental engineering professionals and students pursuing a degree with emphasis in Environmental engineering.

PREREQUISITES: Entry level chemistry course, and understanding of chemical, physical and biological processes on Environmental Engineering

Syllabus

Weeks 1 and 2:
 
I. Introduction
II. Laws, Regulations and Remediation
      A. Legal Concepts
        1. Types of Law
         2. Regulations
                 a)Federal
        B. Laws/Regulations
        a) History
       b) Objectives
        c) Remediation Process 
        d) Definition of hazardous waste
        e) Waste Classification 
        f) Corrective Action
 
Week 3:
 
III. Risk Assessment
      A. Introduction
        1. Terminology
                2. History
       B. Steps in Human Health Risk Assessment
         1. Data Collection and Evaluation
         2. Exposure Assessment
         3. Toxicity Assessment
4. Risk Characterization
5. Risk Management
6. Risk Communication
      C. Ecological Risk Assessment
      D. Risk-based Corrective Action
 
Weeks 4, 5, and 6:
 
IV. Remedial Options
A. Introduction
B. Administrative Options
C. Groundwater
1. Plume Containment
a) introduction
b) extraction wells
c) extraction trenches
d) injection wells/trenches
e) wells/barriers
2. Pump and Treat
a) Introduction
b) Contaminant behavior
c) Design considerations
3. Source Control
a) Philosophy
b) Options
4. Permeable Reactive Barriers
a) Introduction
b) Redox reactions
c) Kinetics
d) Design considerations
5. Monitored Natural Attenuation
a) Introduction
b) Evaluation
c) Monitoring
d) Mechanisms
e) Plume Types
f) Lines of Evidence
g) Case Study
 
Weeks 7, 8 and 9:
 
D. Soils/Sediments
1. Excavation
a) Use
b) Techniques 
c) Control of contaminant transport
d) Typical costs
2. Landfill
a) Hazardous waste landfill
b) Solid waste landfill 
3. Containment
a) characteristics of barrier materials
b) alternatives
4. Solidification/Stabilization
a) Introduction
b) Fundamentals
(1) Chemical
(2) physical
c) Leaching
(1) single-component
(2) multi-component
d) Design Considerations
(1) TCLP-based approach
(2) Risk-based approach
5. Chemical Treatment
a) Non-redox reactions
b) Reductive processes
c) Oxidative processes (ISCO)
 
6. Surfactant extraction
a) Introduction
b) Surfactant properties
c) Configurations
7. Soil Vapor Extraction
a) Introduction
b) Fundamentals
c) Design considerations
 
Weeks 10 and 11:
 
8. Bioremediation
a) Introduction
b) Fundamentals
c) Important processes
d) Examples
9. Phytoremediation
a) Mechanisms
b) Examples
 
Week 12:
 
10. Thermal Processes
a) Introduction
b) Incineration
c) Thermal Desorption
d) Aqueous Oxidation
 
11. Soil Washing
a) Introduction
b) Process Description
c) Design Considerations

Taught by

Prof. Bhanu Prakash Vellanki

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