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CE488: Environmental Geotechnics, Lec. #2 Invest estig igation ions on on Decom ompos position ition Cha haracterist acteristics ics of of Municip unicipal al So Solid id Waste te by, Arif Mohammad Department of Civil

SLIDE 1

Invest estig igation ions on

n Decom
mpos

position ition Cha haracterist acteristics ics of

f Municip

unicipal al So Solid id Waste te

by, Arif Mohammad Department of Civil Engineering Indian Institute of Technology Bombay

CE488: Environmental Geotechnics, Lec. #2

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In Introduction

 millions of tons of municipal solid waste (MSW) every year in modern cities

Emission of gas Unpleasant ambience

Disposal (landfilling)

??? ???

Geoenvironmental, health and safety issues to populace

Land availability

Decomposition

Microbial Thermal Photodegradation

Recycling

What should be done?

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Mining?  Screening?  Economy?

Is Issues to be addressed

Active/working Landfill Passive Landfill  Efficiency of the current decomposition methods? Testing and monitoring decomposition

f MSW?

THANK YOU

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Residues LCS LFG LRS

BLF?

BLF

SUSTAINABLE DEVELOPMENT

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Merits and Demerits of BLF

MERITS Rapid decomposition Less post closure precautions Self sustainable

DEMERITS

More initial capital cost Stability issues

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Role of PRB in landfills

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Biogeochemcial processes in geomaterials

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Soil Mechanics is the application of the laws of mechanics and hydraulics to engineering problems dealing with sediments and other unconsolidated accumulations of solid particles produced by the mechanical and chemical disintegration of rocks regardless of whether or not they contain an admixture of organic constituents.

Karl Terzaghi

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Soil Mechanics

Mineralogy
CEC
DDL

Soil Water Air Chemistry

Sedimentary rock Metamorphic rock Magma Igneous tock Sediments Burial and hardening High temperature and pressure Melting Rising and cooling Biological, Physical and Chemical weathering

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01-03-2018 12

Metabolic products

High sorptive and binding property Heavy metal immobilisation Agglomeration Nutrients Rheology

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Welcome to

CE-488 Environmental Geotechnics

Dredged Sediments: Issues in Utilization

Department of Civil Engineering IIT Bombay

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What is Dredging?

“Under water excavation”

Few examples of Dredging
Maintenance/creation of navigable depth (draft) in channels and berths
In rivers to avoid flooding
Lake restoration projects
Desiltation of water treatment plans

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Ports

Port of Rotterdam, The Netherlands

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Artificial Island Chek Lap Kok, Hong Kong Kansai Airport, Japan

Airports

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Construction of Palm Group of Islands, Dubai

Atificial Is Islands

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What is the need for utilization? Depleting natural resource Cost of disposal

SUSTAINABILITY

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Characterization Utilization Challenges Solutions Issues in utilization?

Infrastructure sector
Agriculture activities
Habitat restoration
Beach replenishment

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1. Handling and

storage

2. Contamination

(organic and Inorganic)

3. Vulnerability

to microbial attack

4. Policies on

beneficial usage

5. Strength and

durability

ISSUES

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GEOENVIRONMENTAL ISSUES PERTAINING TO OPENCAST MINING

by Saineesh Vinjamuri Under the Supervision of

Prof. D. N. Singh

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Introduction

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Research Focus

Laboratory simulation (i.e., accelerated tests) of Acid Mine Drainage to

understand the potential of material.

To study the parameters influencing formation of AMD.
An attempt to neutralize the AMD generated.
Developing a substrate for the growth of vegetation on OB dumps.

Application

Field demonstration of the ‘mine backfilling’.