Solid & Hazardous Wastes

List the common methods (past and present) of municipal waste management​ Describe the features of sanitary landfills and bioreactors​ Explain the importance of recycling, composting, and source reduction of waste​ List criteria for substances to be considered hazardous waste​ List methods of hazardous waste disposal​ Recall major legislation related to solid waste management​

What was the most common method of waste management before 1970?(op_ dum_)

open dumping

What traits must have to be considered hazardous waste according to the EPA?(tox_ igni_ corro_ and reac_)

any waste that shows any of the following traits. Toxic​

Ignitable​

Corrosive​

Reactive​

What is biomagnification?(think of mercury poisoning.)

consumption of toxic wastes can result in the poisoning of animals and of humans who consume the toxin indirectly​

What are some Public Health Threats from ​
Careless Disposal​?(ai_ poll_, sur_ wat_ contamination, groun_ wat_ cont_.)

Air pollution – serious problems result if toxic wastes are burned at temperatures to destroy them​

Surface Water contamination – accidental spills or deliberate dumping of hazardous wastes​

Municipal water intake pumps occasionally must be closed from accidental spills​

Groundwater contamination – toxic leachates percolating from landfill soils to underlying aquifers​

Drinking water wells can become contaminated and make people ill​

what are the most common legal hazardous waste disposal options? (​secure chem_ lan_, controlled inci_)

Secure chemical landfill​

Deep-well injection​

Various chemical, physical, or biological treatment processes​

Controlled incineration​

Waste exchanges​

Secure Chemical Landfilling​ is known as being the ch_ form of what? (was_ dis_)

Secure Chemical Landfilling​ is the Cheapest form of hazardous waste disposal​ due to having PLASTIC lining.

how does deep-well injection (hazardous waste disposal) work?( liq_ was_ are pum_ through li_ wel_ into porous rock formations deep un_ below drinking wa_ aqu_)

Liquid wastes are pumped through lined wells into porous rock formations deep underground below drinking water aquifers​

what are some physical methods of hazardous waste disposal?(eva_)think of what happens to rain

Evaporation, sedimentation, carbon absorption, and air stripping​

how hot are controlled incineration?

750-3000 degrees fahrenheit

What was the most common method for waste disposal after 1970?(san_ lan_)

sanitary landfilling