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Pollution
APES Study Cards
48
Environmental Studies
12th Grade
04/21/2007

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Cards

Term
Nitrogen Dioxide
Definition
Forms when fuels are burned at high temperatures. Also results from forest fires, volcanoes, lightning, and bacterial action in the soil. Forms nitric acid.
Term
Nitric Acid
Definition
(HNO3) Contributes to acid deposition and cultural eutropification. Results is lung irritation and damage, supresses plant growth, and may cause carcinogen.
Term
Ozone
Definition
(03) Major component of photochemical smog. Formed by sunlight reacting with NOx and VOCs in the air. Causes lung irritation and damage, bronchial constriction, coughing, wheezing, and eye irritation. Damages plants, rubber, and plastics.
Term
Sulfur Dioxide
Definition
Produced by burning high-sulfur oil or coal, smelting of metals, and paper manufacturing. Combines with water vapor in the air to produce acid precipitation.
Term
Sulfuric Acid
Definition
(H2SO4) Reduces the productivity of plants. Causes breathing difficulties.
Term
Suspended Particulate Matter
Definition
(PM10) Includes smoke, dust, diesel soot, lead, and asbestos. These cause lung irritation and damange and many are commonly known mutagens, teratogens and carcinogens. Reducing these would create the greatest health benefits.
Term
Volatile Organic Compounds (VOCs)
Definition
Include organic compounds that have a high vapor pressure. They are found in paints, aerosol sprays, dry-cleaning fluids, and industrial solvents. causes respiratory irritation and damage. Most are carcinogens and cause liver, kidney, and central nervous system damage.
Term
Drinking Water Treatment Methods:
Adsorption
Definition
Contaminants stick to the surface of granular or powdered activated charcoal.
Term
Drinking Water Treatment Methods:
Disinfection
Definition
Chlorine, chloramines, chlorine dioxide, ozone, and UV radiation
Term
Drinking Water Treatment Methods:
Filtration
Definition
Removes clay, silts, natural organic matter, and precipitants from the treatment process. This clarifies water and enhances the effectiveness of the disinfection.
Term
Drinking Water Treatment Methods:
Flocculation-Sedimentation
Definition
Process that combines small particles into larger particles that then settle out of the water as sediment. Alum, iron, satls, or synthetic organic polymers are generallyused to promote coagulation.
Term
Drinking Water Treatment Methods:
Ion Exchange
Definition
Removes inorganic constituents. It can beused to remove arsenic, chromium, excess fluoride, nitrates, radium, and uranium.
Term
Water Treatment Remediation Technologies: Adsorption/absorption
Definition
Solutes concentrate at the surface of a sorbent (an absorbing surface), thereby reducing their concentration.
Term
Water Treatment Remediation Technologies: Aeration
Definition
bubbling air through water increases rates of oxidation.
Term
Water Treatment Remediation Technologies: Air Stripping
Definition
VOCs are separated from groundwater by exposing water to air. (the VOCs evaporate due to their high vapor pressure.)
Term
Water Treatment Remediation Technologies: Air Stripping
Definition
VOCs are separated from groundwater by exposing water to air. (the VOCs evaporate due to their high vapor pressure.)
Term
Water Treatment Remediation Technologies: Bioreactors
Definition
Groundwater is acted on by microorganisms
Term
Water Treatment Remediation Technologies: Constructed Wetlands
Definition
Uses natural geochemical and biological processes that parallel natural wetlands. Also known as living machines.
Term
Water Treatment Remediation Technologies: Deep-Well Injection
Definition
Uses injection wells to place treated or untreated liquid waste into geological formations that do not pose a potential risk to groundwater.
Term
Water Treatment Remediation Technologies: Enhanced bioremediation
Definition
The natural rate of bioremediation is enhanced by adding oxygen and nutrients into groundwater.
Term
Water Treatment Remediation Technologies: Fluid-vapor Extraction
Definition
A vacuum system is applied to low-permeable soil to remove liquids and gases.
Term
Water Treatment Remediation Technologies: Granulated Activated Carbon (GAC)
Definition
Groundwater is pumped throughh a series of columns containing activated carbon.
Term
Water Treatment Remediation Technologies: Hot Water or Steam Flushing
Definition
Steam or hot water is forced into an aquifer to vaporize volatile contaminants and is then treated through fluid-vapor extraction
Term
Water Treatment Remediation Technologies: In-well Air Stripping
Definition
Air is injected into wells- the air picks up various contaminants, particularly VOCs. Vapors are drawn off by vapor extraction.
Term
Water Treatment Remediation Technologies: Ion Exchange
Definition
Involves the exchange of one ion for another.
Term
Water Treatment Remediation Technologies: Phytoremediation
Definition
Uses plants to remove contamination.
Term
Water Treatment Remediation Technologies: UV Oxidation
Definition
Uses ultraviolet light, ozone, or hydrogen peroxide to destroy microbiological contaminants.
Term
Primary Sewage Treatment
Definition
Used to reduce oils, grease, fats, sand, grit, and coarse solids. Specific steps include sand catchers, screens, and sedimentation. This is a physical method of cleaning.
Term
Secondary Sewage Treatment
Definition
This is designed to degrade substancially the biological content of the sewage derived from human waste, food waste, soaps, and detergant. Specific steps include filters, activated sludge, filter (oxidizing) beds, trickling filter beds using plastic media and secondary sedimentation. This is a biological method of cleaning.
Term
Tertiary Sewage Treatment
Definition
This raises the effluent quality to the standard required before it is discharged to the receiving environment (sea, river, lake, or ground). Specific steps include sand filtration, lagooning, constructed wetlands, nutrient removal through biological or chemical precipitation, denitrification using bacteria, phosphorous removal using bacteria, microfiltration, and disinfection using UV light, chlorine, or ozone.
Term
Pros to Burning, Incineration, or Energy Recovery
Definition
1. Heat can be used to supplement energy requirements. 2. Reduces impact on landfills. 3. Mass burning is inexpensive. 4. What is left is 10% to 20% of origional volume. 5. US incinerates 15% of its wastes. 6. France, Japan, Sweden, and Switzerland incinerate > 40% of their wastes and use the heat to generate electricity.
Term
Cons to Burning, Incineration, or Energy Recovery
Definition
1. Air pollution including lead, mercury, NOx, cadmium, SO2, HCI and dioxins. 2. Sorting out batteries, plastics, etc. is expensive. 3. No way of knowing toxic consequences. 4. Ash is more concentrated with toxic materials. 5. Initial cost of incinerators are high. 6. Add to acid precipitation and global warming.
Term
Pros to Composting
Definition
1. Creates nutrient-rich soil additive. 2. Aids in water retention. 3. Slowws down soil erosion. 4. No major toxic issues.
Term
Cons to Composting
Definition
1. Public reaction to odor, vermin, and insects. 2. Not in my backyard.
Term
Pros to Remanufacturing
Definition
1. Recovers materials that would have been discarded. 2. Beneficial to inner cities as an industry because material is available and jobs are needed.
Term
Cons to Remanufacturing
Definition
1. Toxic materials may be present (CFCs, heavy metals, toxic chemicals, and so on).
Term
Pros to Detoxifying
Definition
Reduces impact on the environment.
Term
Cons to Detoxifyingg
Definition
Expensive
Term
Pros to Exporting
Definition
1. Gets rid of problem immediately. 2. Source of income for poor countries.
Term
Cons to Exporting
Definition
1. Garbage imperialism or environmental racism. 2. Long-term effects not known. 3. Expensive to transport.
Term
Pros to Land Disposal- Sanitary Landfills
Definition
1.Waste is covered each day with dirt to help prevent insects and rodents. 2. Plastic liners, drainage systems, and other methods help control leaching material into groundwater. 3. Geological studies and environmental impact studies are performed prior to building. 4. Collection of methane and use of fuel cells to supplement energy demand. 5. use of anaerobic methane generators reduces dependence on other energy sources.
Term
Cons to Land Disposal - Sanitary Landfills
Definition
1. Rising land prices. 2. Transportation costs to the landfill. 3. High cost of runnign and monitoring landfill. 4. Legal liability. 5. Suitable areas are limited. 5. NIMBY 6. Degradable plastics do not decompose completely.
Term
Pros to Ocean Dumping
Definition
1. Inexpensive 2. Legal in the United States.
Term
Cons to Ocean Dumping
Definition
1. Debris floats to unintended areas. 2. Marine organisms and food webs are impacted.
Term
Pros to Recycling
Definition
1. Turns waste into an inexpensive resource. 2. Reduces impact on landfills. 3. Reduces need for raw materials and the costs associated with it. 4. Reduces energy requirements to produce product. 5. Reduces dependence on foreign oil. 6. Reduces air and water pollution. 7. Bottle bills provide economic incentive to recycle.
Term
Cons to Recycling
Definition
1. Poor regulation 2. Fluctuations in market price. 3. Throwaway packaging is more popular. 4. Current policies and regulations favor extraction of raw materials. Energy, water, and raw materials are sold below real costs to stimulate new jobs and the economy.
Term
Pros to Reuse
Definition
1. Most efficient method of reclaiming materials. 2. Industry models already in place- auto salvage yards, building materials, and so on. 3. Refillable glass bottles can be reused 15 times. 4. Cloth diapers do not impact landfills.
Term
Cons to Resue
Definition
1. Cost of collecting materials on large scale is expensive. 2. Cost of washing and decontaminating containers is esxpensive. 3. only when items are expensive and labor is cheap is resue economical.
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