Vehicle emissions, fuel oils and natural gas to heat homes, by-products of manufacturing and power generation, particularly coal-fueled power plants, and fumes from chemical production are the primary sources of human-made air pollution..
What causes contaminated air?
The Short Answer: Air pollution is caused by solid and liquid particles and certain gases that are suspended in the air. These particles and gases can come from car and truck exhaust, factories, dust, pollen, mold spores, volcanoes and wildfires..
Harmful emissions come from heating, cooling and powering businesses and industrial operations, as well as from manufacturing processes. Wildfires, flooding, hurricanes and other natural events can create unhealthy air, especially for people with lung disease. And the cleanup often adds to the challenge.
Sources of Air Pollution Most air pollution is created by people, taking the form of emissions from factories, cars, planes, or aerosol cans. Second-hand cigarette smoke is also considered air pollution. These man-made sources of pollution are called anthropogenic sources.
Building materials, like plywood, furniture and other pressed-wood products, often contain chemicals that give off gases and odors as the materials age. These products can give off formaldehyde and other volatile organic compounds (VOCs) into the indoor air.
Building materials, like plywood, furniture and other pressed-wood products, often contain chemicals that give off gases and odors as the materials age. These products can give off formaldehyde and other volatile organic compounds (VOCs) into the indoor air.
The chemical pollutant in the air mainly includes benzene, Carbon monoxide, Formaldehyde, nitrogen dioxide, Radon and other four substances as well. Benzene and Formaldehyde occur widely in building materials.
Building materials air contaminants
Device used to prevent air from moving from one open space to another
An air door or air curtain is a device used to prevent air, contaminants, or flying insects from moving from one open space to another. The most common implementation is a downward-facing blower fan mounted over an entrance to a building, or over an opening between two spaces conditioned at different temperatures.
Air sparging, also known as in situ air stripping and in situ volatilization is an in situ remediation technique, used for the treatment of saturated soils and groundwater contaminated by volatile organic compounds (VOCs) like petroleum hydrocarbons, a widespread problem for the ground water and soil health. Vapor extraction has become a very successful and practical method of VOC remediation. In saturated zone remediation, air sparging refers to the injection a hydrocarbon-free gaseous medium into the ground where contamination has been found. When it comes to situ air sparging it became an intricate phase process that was proven to be successful in Europe since the 1980s. Currently, there have been further developments into bettering the engineering design and process of air sparging.
