Water Pollution

030 - Water Pollution

In this video Paul Andersen explains how water quality can be degraded by pollutants. Wastewater is the main source of water pollution and can be measure using the BOD (biochemical oxygen demand). Dead zones, cultural eutrophication, disease, and other pollutants are included. A basic description of sewage treatment, septic systems, and water purification is also included.

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Music Attribution

Intro
Title: I4dsong_loop_main.wav
Artist: CosmicD
Link to sound: http://www.freesound.org/people/CosmicD/sounds/72556/
Creative Commons Atribution License

Outro
Title: String Theory
Artist: Herman Jolly
http://sunsetvalley.bandcamp.com/track/string-theory

All of the images are licensed under creative commons and public domain licensing:

Agency, U. E. P. (1990). English: Illustration (cutaway view) of rapid sand filter for water purification. Retrieved from https://commons.wikimedia.org/wiki/File:Rapid_sand_filter_EPA.jpg
Allen, R. S. & J. (2010). English: Red circles on this map show the location and size of many of our planet’s dead zones. Retrieved from https://commons.wikimedia.org/wiki/File:Aquatic_Dead_Zones.jpg
Annabel. (2009). English: Overview of the Aquafin waste water treatment plant of Antwerpen-Zuid,. Retrieved from https://commons.wikimedia.org/wiki/File:WWTP_Antwerpen-Zuid.jpg
Betts, L. (1999). English: View of runoff. Retrieved from https://commons.wikimedia.org/wiki/File:Runoff_of_soil_%26_fertilizer.jpg
C, T. E. , Ulrich, L. , Lüthi, C. , Reymond, Ph , Zurbrügg. (2014). English: Schematic of a septic tank. Retrieved from https://commons.wikimedia.org/wiki/File:Schematic_of_a_septic_tank_2.png
Cuyahoga River on Fire. (n.d.). Retrieved from http://www.clf.org/wp-content/uploads/2012/10/Cuyahoga-Fire1.jpg
Jordan, C. (2009). Deutsch: Die unveränderten Mageninhalte eines toten Albatross-Jungen, aufgenommen im September 2009 im Midway Atoll National Wildlife Refuge im Pazifik mit Plastik-Treibgut, das dem Jungtier von seinen Eltern gefüttert wurde. Retrieved from https://commons.wikimedia.org/wiki/File:Albatross_at_Midway_Atoll_Refuge_(8080507529).jpg
Knobil, M. (2005). English: Cholera hospital with several empty beds. Retrieved from https://commons.wikimedia.org/wiki/File:Cholera_hospital_in_Dhaka.jpg
Madprime. (2007). English: K12 E Coli colonies on a plate. Retrieved from https://commons.wikimedia.org/wiki/File:Ecoli_colonies.png
Matthewjparker. (2013). English: An image of Cyanobacteria, Tolypothrix. Retrieved from https://commons.wikimedia.org/wiki/File:Tolypothrix_(Cyanobacteria).JPG
Mayuno. (2007). kanamachi water purification plant. Retrieved from https://commons.wikimedia.org/wiki/File:Kanamachi-water_purification_plant.JPG
NASA, C. S. (2002). English: Acid mine drainage. Retrieved from https://commons.wikimedia.org/wiki/File:Rio_tinto_river_CarolStoker_NASA_Ames_Research_Center.jpg
NIH, C. R. M. L. NIAID. (Unknown date). Čeština: Escherichia coli v elektronovém mikroskopu. Retrieved from https://commons.wikimedia.org/wiki/File:EscherichiaColi_NIAID.jpg
NOAA, N. (2010). English: Gulf of Mexico Dead Zone. Retrieved from https://commons.wikimedia.org/wiki/File:Dead_Zone_NASA_NOAA.jpg
Photobank, M. (2007). Oiled Bird - Black Sea Oil Spill. Retrieved from https://commons.wikimedia.org/wiki/File:Oiled_Bird_-_Black_Sea_Oil_Spill_111207.jpg
Point-source water pollution, Unknown location - Indiana Dunes - epa.gov. (n.d.). Retrieved December 14, 2015, from https://www.flickr.com/photos/thoth-god/4078908973/
Prevention, C. for D. C. and. (1992). (From source) This cholera patient is drinking oral rehydration solution. Retrieved from https://commons.wikimedia.org/wiki/File:Cholera_rehydration_nurses.jpg
Redstarpublications. (2013). English: Photograph of a septic system drainfield. Retrieved from https://commons.wikimedia.org/wiki/File:Septic-system.jpg
Ryan. (2000). Pollution at Varanasi ghats. Retrieved from https://commons.wikimedia.org/wiki/File:Varanasi_ghats.jpg
Secretariat, S. (2009a). English: Here the wastewater is only light grey. Retrieved from https://commons.wikimedia.org/wiki/File:Influent_raw_wastewater_(note_grey_colour_in_glass_jar)_(3232393634).jpg
Secretariat, S. (2009b). English: Photo by Kennedy Mayumbelo in 2006. Retrieved from