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NPTEL

Environmental Remediation of Contaminated Sites

NPTEL and Indian Institute of Technology Roorkee via YouTube

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Overview

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COURSE OUTLINE: The course details the usual remediation techniques practiced worldwide and provides an understanding of the relevant theoretical concepts. The current course will enable a student to:

• Develop an understanding of integrated approaches to remediating contaminated sites.

• Develop the ability to screen, choose and design appropriate technologies for remediation.

ABOUT INSTRUCTOR: Dr. Bhanu Prakash Vellanki, is an Assistant Professor at IIT Roorkee. He holds a PhD in Civil Engineering with a specialization in Environmental Engineering from Texas A&M University. During the course of his doctoral work, Dr. Vellanki developed a new class of treatment processes, called the Advanced Reduction Processes. His research interests include Advanced Redox Processes, industrial/hazardous waste treatment, and emerging contaminants.

Syllabus

Environmental Remediation of Contaminated Sites.
Introduction-I.
Introduction-II.
Course Outline.
Introduction to hazardous waste laws and risk assessment.
The major aspects of Risk Assessment.
Risk Characterization.
Risk Assessment-Deterministic approach.
Risk Assessment-Stochastic Approach.
Hazardous Waste laws- The TCLP Test.
Hazardous rules and regulations.
Remediation of contaminated GW-Plume Containment.
Remediation of contaminated GW-Javendel et al’s approach.
Remediation of contaminated GW by Pump and Treat-I.
Remediation of contaminated GW by Pump and Treat-II.
Remediation of contaminated GW- Calculation of remediation time and introduction to source control.
Permeable Reactive Barriers-I.
Permeable Reactive Barriers-II.
Permeable Reactive Barriers-III.
Design of Permeable Reactive Barriers.
Case Study on Permeable Reactive Barriers-I.
Case Study on Permeable Reactive Barriers-II.
Case Study- PRB (Utah).
Case Study (Utah)-Contd..
Mechanism of natural attenuation and the affecting factors.
Introduction to natural attenuation and its types.
Pathways of Contaminant Transport and Rate of Degradation of Contaminant.
Rate of Degradation of Contaminant when advection is considered.
Rate of Degradation of Contaminant when both diffusion and advection are considered.
Example of Rate of Degradation in natural attenuation.
Case study: Natural Attenuation.
Results of Case Study: Natural Attenuation.
Introduction of Soil/Sediments contamination with some examples.
Case Study: Soil/Sediments Contamination and remediation by Excavation and Disposal.
Hazardous waste disposal site/TSDF.
Different type of fluxes through containment barrier.
Introduction to Solidification and Stabilisation and Case Study.
Different contaminant reactions during solidification and stabilisation.
Diffusion of contaminant through solidified form.
Calculations for fractions of binders, admixtures, waste and water used in solidification.
Discussion of TCLP approach in solidification and its examples.
Discussion of TCLP approach (contd.) and Cost estimation of Solidification.
Case Study: Solidification and Stabilization.
Chemical Treatment.
Case Study: In-Situ Chemical Oxidation: Part-I.
Case Study: In-Situ Chemical Oxidation: Part-II.
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Taught by

IIT Roorkee July 2018

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