Save our planet
Thursday, May 17, 2012
Forms of pollution
Air pollution:- the release of
chemicals and particulates into the atmosphere. Common gaseous pollutants
include carbon monoxide, sulfur dioxide, chlorofluorocarbons (CFCs) and
nitrogen oxides produced by industry and motor vehicles. Photochemical ozone and
smog are created as nitrogen oxides and hydrocarbons react to sunlight.
Particulate matter, or fine dust is characterized by their micrometre size PM10
to PM2.5.
Light pollution:- includes light
trespass, over-illumination and astronomical interference.
Littering:- the criminal
throwing of inappropriate man-made objects, unremoved, onto public and private
properties.
Noise pollution:- which encompasses
roadway noise, aircraft noise, industrial noise as well as high-intensity
sonar.
Soil contamination occurs when chemicals
are released by spill or underground leakage. Among the most significant soil
contaminants are hydrocarbons, heavy metals, MTBE,[10] herbicides, pesticides
and chlorinated hydrocarbons.
Radioactive contamination, resulting from 20th
century activities in atomic physics, such as nuclear power generation and
nuclear weapons research, manufacture and deployment. (See alpha emitters and
actinides in the environment.)
Thermal pollution, is a temperature
change in natural water bodies caused by human influence, such as use of water
as coolant in a power plant.
Visual pollution, which can refer to
the presence of overhead power lines, motorway billboards, scarred landforms
(as from strip mining), open storage of trash, municipal solid waste or space
debris.
Water pollution, by the discharge of
wastewater from commercial and industrial waste (intentionally or through
spills) into surface waters; discharges of untreated domestic sewage, and
chemical contaminants, such as chlorine, from treated sewage; release of waste
and contaminants into surface runoff flowing to surface waters (including urban
runoff and agricultural runoff, which may contain chemical fertilizers and
pesticides); waste disposal and leaching into groundwater; eutrophication and
littering.
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