Strand 6: urban waste disposal Flashcards
What is municipal waste
Everyday items discarded by public
What is municipal solid waste
Urban waste
Impacts of increasing waste generation
- high costs of collecting and treating waste
- water, ground and air pollution
- health problems if untreated or uncollected
- many cities are struggling to collect waste
- running out of landfill spaces
What is residential waste and who produces it
- single and multi family houses
- food, paper, plastic, glass, wood
What is process manufacturing waste and who produces it
- factories, chemical plants, power plants, mineral extraction
- industrial process waste, scrap materials
What is industrial waste and who produces it
- manufacturing, construction sites, power and chemical plants
- housekeeping waste, packaging, construction materials, ashes
What is municipal services waste and who produces it
-street cleaning, landscaping , parks, waste water treatment plants
What is
Commercial waste and who produces it
- stores, hotels, restaurant
- paper, plastic, food, glass, metals
What is agricultural waste and who produces it
- crops, orchards, farms
- spoiled food, agricultural waste, hazardous materials
What is construction and demolition waste and who produces it
- new construction sites, road repairs
- wood, steel, concrete, dirt
What is institutional waste and who produces it
- schools, hospitals, prisons
- food, paper, metals, glass
What are waste streams
Flow of specific waste from its source through recovery, recycling or disposal
How are waste streams regulation in HIC and LIC
HIC: highly regulated (tax and restrictions)
LIC+NEE: improper dumping of waste (rag pickers and unofficial landfills)
What is the global waste trade
It is trade of waste form HIC to LICs to be processed and recycled.
50 million tons of e waste each year
Social impacts of global waste trade
- poor living conditions
- health and safety
- little money
- unsafe community
- no safety gear
Environmental impacts of global waste streams
- methain and toxic gases
- animals harmed
- dangerous materials
- smell
- impact on water quality
What are the current waste diversions
- reduce: reduce quantity of waste
- reuse: reuse products and containers
- recycle: turn something into a new product
- recovery: recover compounds and elements from products, buildings and waste materials
What are current ways of waste disposals
- incineration : burn waste so it reduces volume, it can be sued to create electricity/ heat but doesn’t get rid of waste
- land fill: placing waste in man made pits and wait for it to dispose
- controlled dumping: a carefully selected sit to dispose of hazardous material
Advantages and disadvantages of unregulated disposal
+cheap, gets waste away form affluent areas
-breeding ground for vermin and diseases, contamination of groundwater, air pollution
Advantages and disadvantages of Recycling and recovery
+reduces quantity of disposed waste, return of material to economy
-greenhouse gas emissions
Advantages and disadvantages of Global waste trade
+laws to make it safer, waste can be used/ recycled
-countries often don’t have safe recycling process or facilities, contamination of surrounding environment
Advantages and disadvantages of Incineration
+can reduce the volume of up to 90%,General waste can be safely burnt to produce heat and energy
-incineration without energy recovery is cost you and causes pollution, pollution causes health problems
Advantages and disadvantages of Landfill/ burial
+in HICs there are restrictions on what can be hurried
-doesn’t reduce waste, contamination, pollution, takes years to decompose
Advantages and disadvantages of Submergence
+cheap, provide jobs, stops land being used for this and reduces human used material that could be contaminated, if done correctly there will be no marine problems
-dumping in water can cause marine problems, if it isn’t is a impermeable membrane then it will cause health problems to fish which could be eaten by humans
What is submergance of waste
Man made islands are created and waste is disposed in impermeable waste bags under the water to help bio degrade waste, it is usually just of of countries and don’t contaminate the area unless there is a problem
