Terms in this set (24)
a measure of the mass per unit area of air
the presence of chemicals in the atmosphere in concentrations high enough to affect climate and human organisms and materials
those emitted directly into the troposphere in a potentially harmful form
pollutants that form from chemical reactions that occur when primary pollutants come in contact with other primary pollutants or with naturally occuring substances, such as water vapor.
formed when a mix of nitrogen oxides and volatile organic hydrocarbon compounds from natural and human sources chemically react under the influence of UV radiation from the sun to produce a mixture of more than 100 primary and secondary pollutants
smog from industrial pollution and fossil fuel combustion, ex beijing gray air smog
atmospheric condition in which warm air traps cooler air near the earth's surface
Precipitation with a pH less than 5.6 that forms in the atmosphere when certain pollutants mix with water vapor.
The addition of any substancethat has a negative affect on water or the living things that depend on the water.
discharge pollutants at specific locations through drain pipes, ditches, or sewer lines into bodies of surface water
are scattered and diffuse and cannot be traced to any single site of discharge
process by which a body of water becomes too rich in dissolved nutrients, leading to plant growth that depletes oxygen
Overnourishment of aquatic ecosystems with plant nutrients (mostly nitrates and phosphates) because of human activities such as agriculture, urbanization, and discharges from industrial plants and sewage treatment plants.
materials with toxic waste scraped from the bottoms of rivers to maintain shipping canals
large tank where solid matter or sewage is disintegrated by bacteria
primary sewage treatment
Mechanical sewage treatment in which large solids are filtered out by screens and suspended solids settle out as sludge in a sedimentation tank
secondary sewage treatment
Raw sewage reaching a treatment plant typically undergoes one or two levels of wastewater treatment. The second level is secondary sewage treatment—a biological process in which aerobic bacteria remove as much as 90% of dissolved and biodegradable, oxygen-demanding organic wastes.
advanced sewage treatment
Specialized chemical and physical processes that reduce the amount of specific pollutants left in wastewater after primary and secondary sewage treatment. This type of treatment usually is expensive. See also primary sewage treatment, secondary sewage treatment.
any unwanted or discarded material that is not liquid or a gas
municipal solid waste
waste produced by households and businesses
are essentially fields or holes in the ground where garbage is deposited and sometimes covered with soil
solid wastes are spread out in thin layers, compacted, and covered daily with a fresh layer of clay or plastic foam
any discarded solid or liquid material that is toxic, ignitable, corrosive, or reactive enough to explode or release toxic fumes
a fourth state of matter- is an ionized gas made up of electrically conductive ions and electrons