Monday, July 26, 2010

Pollution control

Pollution control is a term used in environmental management. It means the control of emissions and effluents into air, water or soil. Without pollution control, the waste products from consumption, heating, agriculture, mining, manufacturing, transportation and other human activities, whether they accumulate or disperse, will degrade the environment. In the hierarchy of controls, pollution prevention and waste minimization are more desirable than pollution control.
Practices


  • recycling


Pollution control devices



    Dust collection systems
  • Baghouses
  • Cyclones
  • Electrostatic precipitators
    Scrubbers
  • Baffle spray scrubber
  • Cyclonic spray scrubber
  • Ejector venturi scrubber
  • Mechanically aided scrubber
  • Spray tower
  • Wet scrubber
    Sewage treatment
  • Activated sludge biotreaters
  • API oil-water separators
  • Biofilters
  • Dissolved air flotation (DAF)
  • Powdered activated carbon treatment
  • Sedimentation (water treatment)
   Vapor recovery systems

Environmental health information

The Toxicology and Environmental Health Information Program (TEHIP) at the United States National Library of Medicine (NLM) maintains a comprehensive toxicology and environmental health web site that includes access to resources produced by TEHIP and by other government agencies and organizations. This web site includes links to databases, bibliographies, tutorials, and other scientific and consumer-oriented resources. TEHIP also is responsible for the Toxicology Data Network (TOXNET) an integrated system of toxicology and environmental health databases that are available free of charge on the web.

Pollution Effects Human health

Adverse air quality can kill many organisms including humans. Ozone pollution can cause respiratory disease, cardiovascular disease, throat inflammation, chest pain, and congestion. Water pollution causes approximately 14,000 deaths per day, mostly due to contamination of drinking water by untreated sewage in developing countries. An estimated 700 million Indians have no access to a proper toilet, and 1,000 Indian children die of diarrhoeal sickness every day. Nearly 500 million Chinese lack access to safe drinking water. 656,000 people die prematurely each year in China because of air pollution. In India, air pollution is believed to cause 527,700 fatalities a year. Studies have estimated that the number of people killed annually in the US could be over 50,000.
Oil spills can cause skin irritations and rashes. Noise pollution induces hearing loss, high blood pressure, stress, and sleep disturbance. Mercury has been linked to developmental deficits in children and neurologic symptoms. Older people are majorly exposed to diseases induced by air pollution. Those with heart or lung disorders are under additional risk. Children and infants are also at serious risk. Lead and other heavy metals have been shown to cause neurological problems. Chemical and radioactive substances can cause cancer and as well as birth defects.

How to Prevent Land Pollution


The best way to prevent land pollution is to recycle. Here are a few other ways you can reduce land pollution:
  • Reuse any items that you can
  • Buy biodegradable products
  • Store all liquid chemicals and waste in spill-proof containers
  • Eat organic foods that are grown without pesticides
  • Don’t use pesticides
  • Use a drip tray to collect engine oil
  • Buy products that have little packaging
  • Don’t dump motor oil on the ground

How to Prevent Water Pollution


The best way to prevent water pollution is to not throw trash and other harmful chemicals into our water supplies. Here are a few more ways you can prevent water pollution:
  • Wash your car far away from any stormwater drains
  • Don’t throw trash, chemicals or solvents into sewer drains
  • Inspect your septic system every 3-5 years
  • Avoid using pesticides and fertilizers that can run off into water systems
  • Sweep your driveway instead of hosing it down
  • Always pump your waste-holding tanks on your boat
  • Use non-toxic cleaning materials
  • Clean up oil and other liquid spills with kitty litter and sweet them up
  • Don’t wash paint brushes in the sink

How to Prevent Air Pollution


The number one way to prevent air pollution is to walk or bike more and drive less. This will prevent fossil fuels from polluting the air. Here are some other ways to prevent air pollution:
  • Don’t smoke
  • Keep your car maintenance up-to-date
  • If you have to drive, do your errands at one time
  • Don’t buy products that come in aerosol spray cans
  • Avoid using lighter fluid when barbecuing outside
  • When you drive accelerate slowly and use cruise control
  • Always replace your car’s air filter
  • Use a push or electric lawnmower rather than a gas-powered one
  • Don’t use harsh chemical cleaners that can emit fumes
  • Inspect your gas appliances and heaters regularly