Urban waste Flashcards
2 major problems of urban waste in HICS ?
Volume and disposal - HICS produce 5 x more per person than LIC/NEE.
What is the waste hierarchy ?
Reduce
Reuse
Recycle
Energy recovery
Dispose
3 types of waste ?
Industrial, Commercial, Households
What is MSW and a fact ?
Municipal Solid Waste - Referring to household waste, commercial waste, etc. MSW and population in 20 years has doubled.
What are waste streams ?
The different types of waste produced by various activities, typically categorized based on the source, nature, or composition of the waste.
Financial impacts of waste ?
Collecting and treatment are expensive.
Environmental impacts of waste ?
MSW contributes to methane gases and greenhouse gases.
Health impacts of waste ?
Respiratory aliments from breathing in fumes and burning waste.
Space impacts of waste ?
Cities running out of landfill space so having to find alternatives.
Incineration ADV and DIS ?
Can reduce toxicity of waste, Can produce energy, Can reduce volume of waste needing disposal by 90%
Expensive and unpopular with locals, Not all waste combustible, Challenges to air pollution
Landfill ADV and DIS ?
Different types of waste are accepted and ordered, Facilities are properly sited with necessary controls.
Unsightly and takes up space, Decaying matter produces methane a greenhouse gas.
What is anaerobic digestion ?
Biological processes break down organic matter such as food waste, sewage sludge in the presence of oxygen.
