Solid Waste and Hazardous Waste Flashcards
any unwanted or discarded material we produce that is not a liquid or a gas
solid waste
Two Types of Solid Waste
Industrial solid waste, Municipal solid waste
produced by mines, agriculture, and industries that supply people with goods and services
industrial solid waste
consists of the combined solid waste produced by homes and workplace
municipal solid waste
often called garbage or trash
municipal solid waste
attempt to reduce the environmental impact of MSW without seriously trying to reduce the amount of waste produced
waste management
much less waste and pollution are produced, and the wastes that are produced are viewed as potential resources that can be reused, recycled, or composted
waste reduction
in waste reduction, wastes that are produced are viewed as potential resources that can be what?
reused, recycled, or composted
a variety of strategies for both waste reduction and waste management
integrated waste management
Two Types of Landfills
Open Dumps, Sanitary Landfills
essentially fields or holes in the ground where garbage is deposited and sometimes burned
Open Dumps
solid wastes are spread out in thin layers, compacted, and covered daily with a fresh layer of clay or plastic foam, which helps to keep the material dry and reduces leakage of contaminated water from the landfill
sanitary landfills
leakage of contaminated water
leachate
for detoxifying hazardous wastes
physical methods
include using charcoal or resins to filter out harmful solids and distilling liquid mixtures to separate out harmful chemicals
physical methods
deadly wastes can be encapsulated in glass, cement, or ceramics and then put in secure storage sites
physical methods
used to convert hazardous chemicals to harmless or less harmful chemicals through chemical reactions
chemical methods
for treatment of hazardous waste to be the wave of the future
biological methods
bacteria and enzymes help to destroy toxic or hazardous substances or convert them to harmless compounds
bioremediation
involves using natural or genetically engineered plants to absorb, filter, and remove contaminants from polluted soil and water
phytoremediation
Hazardous wastes can be __________ to break down and convert them to harmless or less harmful chemicals
incinerated
are ponds, pits, or lagoons into which liners are placed and liquid hazardous wastes are stored
surface impoundments
most common form of burial
deep-well disposal
liquid hazardous wastes are pumped through a pipe into dry, porous rock formations far beneath aquifers, many of which are tapped for drinking and irrigation water
deep-well disposal