Solid Waste Treatment
- Created by: roror
- Created on: 16-05-18 13:07
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- Solid Waste Treatment
- Landfill and Land Raising
- Landfill; buries solid wastes in exhausted quarries
- Land Raising; Deposits wastes on derelict land
- Covered with clay and plastic to prevent leachate release. Methane collected
- Costs; Purchase of land,construction costs, maintenance, tax
- Environmental Effects
- Advantages: If properly maintained, prevents pollution, derelict land put to use, prevents more buildings on old sites
- Disadvantages: Pollution risk, loss of aesthetic value, land use conflicts, burial of waste doesn't deal with problem
- EU Landfill Directive
- Reduce use of landfill
- Incineration and Pyrolysis
- Incineration: Mass burning of wastes to produce energy
- Pyrolysis: High temps used to ' burn' wastes without oxygen to produce gases and char
- Economic Effects
- Advantages: Reduced landfill waste, energy can be made, other usable products can be used when landfill is unavailable, cheaper than landfill
- Disadvantages: Somematerials needsorting, sufficient waste is needed to keep plant open so may have to import waste, expensive in terms of land and labour
- Environmental Effects:
- Advantages: Waste is treated, less land needed than landfill, reduces waste volume
- Disadvantages: Toxic fly ash contains heavy metals, releases polluting gases and particulates, loss of aesthetic value
- Encapsulation/Vitrification
- Treats radioactive waste
- Waste mixed and heated with sand to form a glass-like material where waste is bound to waste matrix
- Glass stored in steel cylinders and stored above or below ground
- Waste mixed and heated with sand to form a glass-like material where waste is bound to waste matrix
- Economic Effects
- Advantages: No further treatment and waste is stored in a stable form
- Disadvantages: Expensive, land needed for storage, continuous monitoring needed
- Environmental Effects
- Radioactive material less likely to leak
- Potential for leaks if process isn't carried out correctly or if vitrified material degrades
- Treats radioactive waste
- Salvaging And Recyling
- Advantages: Reduce resource exhaustion and decrease volume of waste produced
- Untitled
- Landfill and Land Raising
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