EN3014 Landfill Engineering and Remediation Technology Syllabus:
EN3014 Landfill Engineering and Remediation Technology Syllabus – Anna University Regulation 2021
COURSE OBJECTIVE:
To understand the important characteristics and design principles of the waste containment and remediation industry as well as know the relevant regulations and engineering design requirements of landfills and contaminated site remediation
UNIT I LANDFILL BASICS
Waste management Hierarchy- Need for landfills –Environmental Protection by LandfillsLandfill Classification – Sanitary and Secure Landfills – Components and Configuration – Legal frame work for landfilling – Landfill Site investigation- Regional Landfills- Environmental control using site design –- Landfill Design Tasks
UNIT II LANDFILL LINERS AND COVER SYSTEMS
Landfill barrier system components – Design of Compacted clay liners: Factors affecting hydraulic conductivity , Water content-density criteria, Thickness, Desiccation – Geo synthetic Clay Liners and Geomembranes; types, manufacturing, handling, seaming and testing – Asphalt Barriers and Capillary barrier – Composite Liner system design- liner construction and quality control- Leakage through Liners- vapor transmission and chemical compatibility – Installation of Geo membranes – Liner Leakage Mechanism – Diffusion – Controls on advection through liners – Single phase flow advection-diffusion- Landfill cover systems- Design of Cover Systems – Daily Cover – Intermediate Cover – Final Cover – Flow through Landfill CoversDesign and Analysis of Slope Stability- Anchor Trenches- Access ramps – Erosion control
UNIT III LEACHATE AND LANDFILL GAS MANAGEMENT
Waste decomposition in landfills – Factors affecting leachate and landfill gas generation – Factors affecting Leachate Quantity in active and post closure conditions- Hydrologic Evaluation of Landfill Performance (HELP) model – Leachate Drainage Layer – Geotextile and Geonet design – leachate Collection and Removal systems-Temporal trends in leachate composition – Design of Landfill gas collection and removal systems- Gas condensate issues & knockouts – Leachate treatment methods (biological and physico-chemical)- Leachate recirculation & bioreactor landfills monitoring and control of leachate and Landfill gas- Landfill Settlement
UNIT IV LANDFILL OPERATION AND CLOSURE
Landfill Construction and Operational Controls – Fill Sequencing Plans – Cell ConstructionDozer and Compactor operations-Selection of Landfill Equipment- Landfill AdministrationRecord Keeping – Topographic mapping-Environmental Controls – Odour, Vector and Litter Control – Landfill Safety – Fire Control – Ground and Surface water Monitoring – Methane Gas monitoring – Audits of landfill environmental performance and management – Post Closure care and use of landfills – Landfill Economics- landfill construction and operational cost estimation – establishing tipping fees
UNIT V CONTAMINATED SITE REMEDIATION
Contaminated sites – Fate and behavior of toxics and persistent substances in the environment – Engineering Issues in Site Remediation – Site Characterization – Framework for risk assessment at landfill sites – Remediation Principles: Source Control and Management of Migration Covers, Cutoff Walls, Solidification / Stabilization – Pump-and-Treat Systems – Solvent Vapor Extraction, Air Sparging, Soil Flushing – Bioremediation – Natural Attenuation – Remedy Selection and Risk Assessment – Geotechnical Aspects of In Situ Remediation Technology – Specific case studies in contaminated site remediation – Rehabilitation of Open dumps- Landfill Mining
TOTAL: 45 PERIODS
COURSE OUTCOMES:
On completion of the course, the student is expected to be able to
CO1 Have an overview of the Indian and international landfill regulations and guidelines for the design, construction, operation and management of landfills
CO2 Understand the design and construction of landfills, processes in landfills, methods for management and treatment of landfill gas and leachate
CO3 Have an in-depth understanding of the key pollutants in leachate and gas, their potential environmental impacts and the
CO4 Make engineering design and study performance of control systems used to manage and treat pollutant and waste emissions from sites.
CO5 Be able to apply a risk based assessment of contaminated sites and implement site remediation technologies
REFERENCES:
1. Robert M. Koerner and Donald H Gray (2002), “Geotechnical aspects of Landfill Design and Construction”, Prentice Hall, New Jersey.
2. Neal Bolton P.E (1995), “The Handbook of Landfill Operations”, Blue Ridge Services Inc., Atascadro, CA – ISBN 0-9646956-0-x
3. David E Daniel and Robert M. Koerner (2007), “Waste Containment Facilities –Guidance for construction Quality Assurance and Construction Quality Control of Liner and Cover Systems, American Socirty of Civil Engineers, ASCE Press.
4. Donald L Wise and Debra J Trantolo (2018), “Remediation of Hazardous Waste Contaminated Soils, Marcel Dekker Inc., New York
5. George Tchobanoglous, Hilary Theisen and Samuel A, Vigil, “Integrated Solid Waste Management, Mc-Graw Hill International edition, New York, 1993.
6. Hari D Sharma and Krishna R. Reddy (2004), Geoenvironmental Engineering: Site Remediation, Waste Containment, and Emerging Waste Management Techonolgies, John Wiely, New Jersy
7. Oweis, I.S. and Khera, R.P (1998) Geotechnology of Waste Management, 2nd Edition, PWS Publishing Co., Boston, MA