LAND DISPOSAL

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LAND DISPOSAL by Mind Map: LAND DISPOSAL

1. Lechate

1.1. general

1.1.1. liquid that has percolated through solid waste and has extracted dissolved materials

1.2. Control

1.2.1. 1)Liner System for MSW

1.2.2. 2) Liner Systems for Monofills

1.2.3. 3)Construction of Clay Liners

1.3. Collection System

1.3.1. 1. Selection of Liner System

1.3.2. 2. Design of Leachate Collection Facilities

1.3.2.1. Sloped terraces

1.3.2.2. Piped bottom

1.3.3. 3. Leachate Removal, Collection and Holding Facilities

1.4. Management Option

1.4.1. 1. Lechate Recycling

1.4.2. 2. Leachate Treatment

1.4.3. 3. Leachate Evaporation

1.4.4. 4. Selection of Treatment Facilities

1.4.5. 5. Discharge to Wastewater Treatment Plant

2. Landfill Gases

2.1. General

2.1.1. landfill gas control systems prevent unwanted movement

2.2. Volume of Gas Produces

2.2.1. Organic+H2O-> Biodegradable + CH4 + CO2 + Other matter

2.3. Sources of Traces Gases

2.3.1. Brought to landfillwith incoming waste

2.3.2. Biotic & abiotic within landfill

2.4. Management

2.4.1. 1. Flaring

2.4.2. 2. Landill Gas Energy Recovery System

3. Landfill Classification, Types and Methods

3.1. Classification

3.1.1. Dump sites

3.1.2. sanitary landfill

3.1.3. scheduled waste landfill

3.2. Methods

3.2.1. 1. Excavated cells

3.2.2. 2. Area method

3.2.3. 3. Canyon

4. Landfill Sitting

4.1. 1. Haul Distance

4.2. 2. Location Resrictions.

4.3. 3. Available Land Area

4.4. 4. Site Access.

4.5. 5. Soil Conditions & Topography.

4.6. 6. Climatolgic Conditions.

4.7. 7. Surface Water Hydrology.

4.8. 8. Geologic & hydrogeologic Conditions

4.9. 9. Local Environmental Conditions

4.10. 10. Human Use for Completed Landfills

5. Wastes Placement

5.1. 1) Waste deposited in cells ->unloaded and compacted -> cover

5.2. 2) One/more lifts -> horizontal gas recovery trenches completed surfaces -> gravel & perforated pipes

5.3. 3) Additional leachate collection in successive lifts.

5.4. 4) Final cover -> minimize infiltration of precipitation -> route drainage away. Landscape -> control erosion.

5.5. 5) Vertical gas extraction well ->gas flaring or energy recovery facilities.

6. Post Closure Mangement

6.1. -Monitoring and maintenance of the completed landfills -> 30-50 years after closure.

6.2. -Landfill surface maintained.

6.3. -Gas & Leachate control systems maintained & operated.

6.4. -Pollution detection system installed.

7. Environmental Quality Monitoring

7.1. Vadose Zone Monitoring

7.1.1. Liquid

7.1.2. Gas

7.2. Groundwater Monitoring

7.2.1. detect changes in water quality

7.3. Air Quality Monitoring

7.3.1. Ambient air quality

7.3.2. Extracted landfill gas

7.3.3. Off-gases

8. Closure & Post-closure

8.1. Long-term Closure Plan

8.1.1. Cover and landscape design

8.1.2. control of landfill gases

8.1.3. collection and treatment of leachate

8.1.4. Environmental monitoring system

8.2. Post Closure Care

8.2.1. Routine inspection

8.2.2. Infrastructure maintenance

8.2.3. Environmental monitoring systems