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Water Pollution
the contamination of bodies of water by direct or indirect pollutants without correct treatment to remove these compounds
Biological Oxygen Demand (BOD)
*Biochemical Oxygen Demand
a measure of the amount of oxygen necessary to decompose organic material in a unit volume of water. As the amount of organic waste in water increases, more oxygen is used, resulting in a higher BOD
Environmental Law
a field of law concerning the conservation and use of natural resources and the control of pollution
Contaminants (water)
undesirable material that makes a place no longer suitable for use
Fecal coliform
bacteria that occur naturally in human intestines and are used as a standard measure of microbial pollution and an indicator of disease potential for a water source
Point source pollution
sources of pollution such as smokestacks, pipes, or accidental spills that are readily identified and stationary; they are often thought to be easier to recognize and control than are area sources; this is true only in a general sense, as some very large point sources emit tremendous amounts of pollutants into the environment
Non-point source pollution
pollution sources that are diffused and intermittent and are influenced by factors such as land use, climate, hydrology, topography, native vegetation, and geology
Primary treatment
(of wastewater) removal of large particles and organic materials from wastewater through screening
Secondary treatment
(of wastewater) use of biological processes to degrade wastewater in a treatment facility
Tertiary Treatment
(of wastewater) an advanced form of wastewater treatment involving chemical treatment or advanced filtration; an example is chlorination of water
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