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 Engineering Indian Institute of Technology Bombay
In Introduction millions of tons of municipal solid waste (MSW) every year in modern cities Disposal (landfilling) Geoenvironmental, ??? ??? What health and safety should issues to populace be done? Unpleasant ambience Emission of gas Land availability Decomposition Recycling Microbial Thermal Photodegradation 2
Is Issues to be addressed Active/working Landfill Passive Landfill Efficiency of the current decomposition Mining? methods? Screening? Testing and monitoring decomposition of MSW? Economy? THANK YOU 3
BLF? LFG LRS SUSTAINABLE DEVELOPMENT BLF LCS Residues 8
Merits and Demerits of BLF MERITS Rapid decomposition Less post closure precautions Self sustainable DEMERITS More initial capital cost Stability issues
Role of PRB in landfills
Biogeochemcial processes in geomaterials
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
Soil Mechanics • Mineralogy • CEC Chemistry Air • DDL Burial and hardening Sedimentary Sediments rock Water Biological, Physical and High temperature and Chemical pressure weathering Metamorphic Igneous tock Soil rock Rising and Melting Magma cooling
Metabolic products Nutrients Rheology Agglomeration High sorptive and binding property 01-03-2018 12 Heavy metal immobilisation
Welcome to CE-488 Environmental Geotechnics Dredged Sediments: Issues in Utilization Department of Civil Engineering IIT Bombay
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
Ports Port of Rotterdam, The Netherlands
Airports Artificial Island Chek Lap Kok, Hong Kong Kansai Airport, Japan 16
Atificial Is Islands Construction of Palm Group of Islands, Dubai 17
Depleting natural What is the need Cost of disposal resource for utilization? SUSTAINABILITY 18
Characterization Utilization Challenges Solutions • Infrastructure sector • Agriculture activities • Habitat restoration Issues in utilization? • Beach replenishment 19
1. Handling and storage 2. Contamination 5. Strength and (organic and durability Inorganic) ISSUES 3. Vulnerability 4. Policies on to microbial beneficial usage attack 20
GEOENVIRONMENTAL ISSUES PERTAINING TO OPENCAST MINING by Saineesh Vinjamuri Under the Supervision of Prof. D. N. Singh
Introduction
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’ .
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