pollution
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Pollution. Types of pollution are- 1.Air Pollution. 2.Water Pollution. 3.Noise Pollution. 4.Land Pollution. Causes of Air Pollution. 1.Smoke from chimneys of factories. The Police - Synchronicity 2 - YouTube. 2.Smoke from Vehicles. Discuss L.A, TORONTO, LONDON’S MOTHS , Beijing. - PowerPoint PPT PresentationTRANSCRIPT
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Types of pollution are-
1.Air Pollution.
2.Water Pollution.
3.Noise Pollution.
4.Land Pollution.
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1.Smoke from chimneys of factories.The Police - Synchronicity 2 - YouTube2.Smoke from Vehicles.
Discuss L.A, TORONTO, LONDON’S MOTHS , Beijing
3.Smoke from fires.
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1.We should share vehicles for going to office.
2.We should get a regular pollution check of our vehicle. (RETIRE YOUR RIDE, CASH FOR CLUNKERS)
3.We should use a bicycle for going to near by places.
4.Chimneys of factories should be fitted with proper filters to prevent smokes from coming out and effect atmosphere.
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1.Factories throw their waste in water bodies.
2.People bathe and wash clothes in water bodies.
3.Some oil ships drown in water which hardly effects the aquatic life.
4.Smoke from vehicles let the river to dry.
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1.Factories should not throw their waste in water bodies.
2.People should not bathe and wash clothes in rivers or lakes.
3.People should not take their animals to take baths in rivers or lakes.
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1.Jet planes.
2.Loud speakers and other loud speaking things.
3.Cinema halls.
4.Factories
5.Road traffic
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1.We should not use loud speakers.
2.Factories should be made out of the city.
3.There should be not more noise making vehicles on the roads.
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1.People Cut forest for furniture.
2.Plastic is the main source of land pollution (and sea).
3.People throw house garbage on roads.
4.Some industries throw their waste on land.
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1.People should not cut trees for making furniture.
2.People should not throw garbage on land.
3.Plastic bags should be avoided for prevention of land pollution.
4.Industries should not throw there waste on land.
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Water Pollution
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Types and Sources of Water Pollution
#1 problem - Eroded soilsOrganic wastes, disease-causing agentsChemicals, nutrientsRadioactive stuff, heat
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Point and Nonpoint Sources
NONPOINT SOURCES
Urban streets
Suburban development
Wastewater treatment plant
Rural homes
Cropland
Factory
Animal feedlot
POINT SOURCES
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Major Problem: Drinking Water
Safe Drinking Water Act
EPA: Maximum contaminant levels (municipal, but not rural and private)
1/2 of world’s people drink polluted water
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Pollution of Surface Water: Streams D.O., B.O.D., fecal coliform bacteria count
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Pollution of Surface Water: LakesCultural eutrophication Slow
turnover
Accumulation of nutrients, excessive plant growth, algae blooms
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Case Study: The Great Lakes
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MississippiRiver Basin
MissouriRiver
OhioRiver
MississippiRiver
LOUISIANAMississippi
River
Depleted
Oxygen
Gulf of MexicoDead Zone
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Suffocatedfish
Lowdissolvedoxygen
Decreased fishpopulation
Altered food web
Thermal Pollution
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Groundwater Pollution: Sources Low flow rates Few bacteria
Cold temperatures
Coal strip mine runoff
Pumping well
Waste lagoon
Accidental spills
Groundwater flow
Confined aquifer
Discharge
Leakage from faulty casing
Hazardous waste injection wellPesticides
Gasoline station
Buried gasoline and solvent tank
Sewer
Cesspool septic tank
De-icing road salt
Unconfined freshwater aquifer
Confined freshwater aquifer
Water pumping well Landfill
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Groundwater Pollution PreventionMonitoring aquifers - expensive
Leak detection systems
Strictly regulating hazardous waste disposal
Protecting recharge areas- aquifer classifications
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Ocean Pollution: dumping and oil
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Oil Spills Sources: offshore wells, tankers, pipelines and storage tanks
Effects: death of organisms, loss of animal insulation and buoyancy, smothering
Significant economic impacts
Short-term cleanup problems - beaches, wildlife
Long-term cleanup problem - persistence (decades)
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Solutions: Preventing and Reducing Surface Water Pollution
Nonpoint Sources Point Sources
Reduce runoff
Buffer zone vegetation
Reduce soilerosion
Water PollutionControl Act (1972)
Clean Water Act(1977)- set effluent standards- secondary treatment
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Technological Approach: Sewage Treatment
Mechanical and biological treatment
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Technological Approach: Septic Systems
Require suitable soils and maintenance
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Technological Approach: Using Wetlands to Treat Sewage
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Air Pollution Harmful to life or materials
Materials - soiled, corrosion of metals
Plants - stunting, damage (crops, forests)
Animals - respiratory, nervous system damage
Humans - eye irritation, headache, dizziness,bronchitis, emphysema, cancer- young, old, heart and lung patients susceptible
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Air Pollution Primary pollutants Secondary pollutants
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Natural Sources - most primary pollutants
Decay processes, winds, volcaniceruptions, sea spray
Widely dispersed- do not reach harmful levels
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Human Sources - more importantConcentrated where the people are
1) Stationary fuelcombustion
2) Industry
3) Transportation
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Air pollution problems influenced by:
Topography (thermal inversions)Climate (cool-moist, warm-dry)
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Temperature InversionsEspecially in valleysLos Angeles, Denver, Winona
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Industrial SmogCool, moist
Primarypollutants
Worst in winter,at night
Chicago, London
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Photochemical Smog Warm, dry
Secondary pollutants
Worst insummer, midday
Los Angeles
NO from cars
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Widespread Secondary Air Pollution: Acid Deposition
Wet depositionDry deposition
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Acid Deposition in the U.S.
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Acid Deposition and Aquatic Systems Fish declines
Undesirable species
Aluminum toxicity
Acid shock
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Acid Deposition, Plants, and Soil Nutrient
leaching
Heavy metal release
Weakens trees
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Industrial Smog Control -sulfur dioxide and particulates
Burn less fossil fuels
Use alternative energy sources
Burn low-sulfur coal
Remove sulfur from coal (chemicals)
Stack scrubbers, electrostatic precipitators
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Photochemical Smog Control - nitrous oxide emissions
Use mass transit
Develop new engines
Develop new fuels
Develop new emission controls
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Solutions: Preventing and Reducing Air Pollution
Clean Air Acts (1970, 1977)
1) Industrial emissions standards2) Automotive emissions standards3) Deadlines for meeting standards
Standards becoming stricter, requeststo extend deadlines- better technology needed
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Waste ManagementIndustrial and agricultural wasteMunicipal solid waste
Hazardous wastes
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Solid Waste in U.S.>300 lbs/person/dayAgriculture - 13%
Mining wastes - 75%Industries - 9.5% (fly ash)Municipal - 1.5% (4.6 lbs. per
person, 70% paper, food, yard wastes)
Sewage sludge - 1%Sewage sludge - 1%
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U.S. Municipal WastesMulti-billion dollar industry
Resource Conservation and RecoveryAct - 1976- outlawed open dumping
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Managing Today’s Wastes Sanitary landfill - 54% Recycling and composting - 30%
Incineration - 16% (dioxin)
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Sanitary Landfill
1) Synthetic liner
2) Earth cover
3) Leachate collection system
4) Methane venting
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Changing Landfills
Filling up rapidly
Difficult finding new sites
- restrictions- NIMBY - NOT IN MY BACK YARD!
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RecyclingEasily isolated
from other wastes
Large quantities (60-80% of wastes)
Valuable
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Recycling Aluminum, Wastepaper, and Plastics
40% of aluminum recycled in USRecycled aluminum uses over
90% fewer resourcesPaper: preconsumer vs.
postconsumer recycling10% or less of plastic recycled in USPlastics can be very difficult to recycle
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Burning WastesMass burn incineration
Air pollution
Waste to energy
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Hazardous Wastes U.S. - >1 ton/person/year
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Today’s Management1) reduce, reuse, recycle (5%)
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Today’s Management
2) detoxification, incineration (5%) Physical reactions Chemical reactions Landfarming
Burning
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Today’s Management3) Land disposal (90%)
Landfills, pits, lagoons, injection wells,“midnight dumping”, sewage systems,surface waters
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Hazardous Waste Regulation in the United States
Resource Conservation and Recovery Act EPA identifies hazardous wastes, sets
standards for management Superfund - established to clean up
hazardous waste sites
Love Canal - Hooker Chemical plant insuburban Niagara Falls, NY
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ENVIRONMENT CANADA HANDLES THIS IN CANADA
• TAR PONDS-steel making process remnants, carcinogens
• HALIFAX HARBOUR-sewage treatment• NIMBY-EXAMPLES?• TAR SANDS TAILING PONDS• Lake Athabaska
Pollution due to Oil Industry
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Trans Canada Keystone XL Pipeline not approved by Obama Administration
•“Since only 3% of oil sands oil has been used to date…”game over” for environment if we burn it all.”-Keystone xl rejected by State dept and Obama- “Big Oil’s” first REAL loss usually $ talks
• Obama says still wants US to move away from foreign oil -Environmentalists, scientists and native groups won. -Republicans demanded a decision before November election and forced Obama to rush-play to his constituents
• Trans Canada can reapply. Harper unhappy. Will sell to China.
• Ezra Levant Ethical Oil Versus Conflict Oil - YouTube• http://www.theglobeandmail.com/report-on-business/industry-news/
energy-and-resources/to-harpers-profound-disappointment-obama-rejects-keystone/article2306625/
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• Air Pollution – YouTube• Rachel Carson Introduction – YouTube• DDT and Pesticides – YouTube• Tar Pond Song -Sydney NS Terminal Drive – YouTube• Rick Mercer Report : Save the Sydney Tar Ponds – YouTube• Sewage Flooding in Halifax – YouTube• How the Sewage Plant Broke – YouTube• Acid rain – YouTube• Acid Rain Eating Washington, D.C. – YouTube• Water Pollution: Saving the water – YouTube
• HouseSmarts Green Piece "Noise Pollution" Episode 111 – YouTube• Ain't Noise Pollution (High Quality) – YouTube• Campaigners fight noise pollution in bustling Mumbai – YouTube• Light pollution, the problem – YouTube