25 terms

Environmental impacts of alternative approaches to waste disposal

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Waste management
The management of garbage through a variety of methods including reduction, recycling, composting, incineration, landfilling, etc.
Waste management hierarchy
A priority list for disposal of waste in the following order - reduce and reuse, compost, recycle, waste to energy incineration, landfill
Domestic waste
Waste generated from household rubbish.
Commercial waste
Waste produced by businesses such as offices, manufacturing industries, restaurants, schools
Disposal
The act or means of getting rid of something
Total diversion rate
The amount of material that is recycled and/or composted instead of going into a landfill.
Global Waste Trail
The international trade of waste between countries for further treatment, disposal, or recycling. Toxic or hazardous wastes are often exported from developed countries to developing countries, also known as countries of the Global South.
Unregulated waste disposal
Where waste is dumped without any laws, rules or regulations covering its safe disposal
Landfill
The disposal of refuse and other waste material by burying it and covering it over with soil
Environmental impacts of landfill
Water contaminated via leachates, wind blown waste, scars the landscape, production of methane from rotting organic matter, attracts vermin
Recycling and recovery
The recovery and reuse of materials from wastes. Solid waste recycling refers to the reuse of manufactured goods from which resources such as steel, copper , or plastics can be recovered and reused.
Environmental impacts of Recycling and recovery
Saves mining and producing new resources, requires energy in many of the processes, uses water, not all products can be recycled
Energy from waste
Heat derived from incinerators can be used to heat buildings and/or generate electricity via steam produced by burning waste to heat water
Incineration
A waste treatment process that involves the combustion of organic substances contained in waste materials.
Environmental impacts of Incineration
Releases a wide variety of pollutants (e.g. particulate matter, metals, acid gases, oxides of nitrogen, and sulphur, toxic substances) depending on the composition of the waste, which leads to health deterioration and environmental degradation.
Environmental impacts of Submergence
Waste could spread across the oceans, be ingested by marine life and plastics can remain in the system for a very long time
Submergence
Dumping waste in water bodies such as the sea, banned by international convention
Incineration
A controlled process of burning solid waste for disposal in which mixed garbage is combusted at very high temperatures
Electronic waste
Discarded electrical or electronic devices. Used electronics which are destined for reuse, resale, salvage, recycling, or disposal are also considered e-waste.
Guiyu
Thought to be the largest electronic waste (e-waste) site in the world. In 2005, there were 60,000 e-waste workers in the city who processed the more than 100 truckloads that were transported to the 52-square-kilometre area every day.
"Electronic graveyard of the world"
Nickname of Guiyu due to the constant movement into and processing of e-wastes in the area leading to the harmful and toxic environment and living conditions, coupled with inadequate facilities.
4Rs
Recycle, reuse, repair, recover
Physical reprocessing
The physical removal of waste or reusing of materials
Biological reprocessing
Using organic materials to decompose into organic matter like soil
Waste reduction
The purchase or production of materials and packaging that can be recycled or composted
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