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Lecture 4

EARTHSC 2WW3 Lecture 4: Class 4

4 Pages
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Department
Earth Sciences
Course Code
EARTHSC 2WW3
Professor
johnmaclachlan

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Description
More on pollution Agriculture o Arable and livestock o Sediment produced o Nitrogenphosphorus highly mobile Used in laundry detergent Pesticide Creates algae build up o If surface water is polluted, its still okay and relatively easy to clean.. Ground water, no you are talking about millions of dollars Water Chemistry Nutrients Nitrogen o important plant nutrient o exists in atmosphere (78 of total volume) o Nitrate created by lightning, bacteria o Nitrite created by bacteria o Ammonia is a byproduct of decaying plant tissue o excessive amounts can be detrimental to human health Phosphorus o can be natural or artificial o can be a hindrance in water treatment plants Large amounts of all of this can be detrimental to health, but we are more concerned about how it affects water Eutrophication moving from a oligtrophic to mesotrophic to eutrophic L. Superior is Oligtrophic o Lots of nutrients Tobermory eutrophic o You can see 30 feet down natural process humans impact more likely to happen in standing water Nitrate from wastewater treatment plans can assist in process http:www.youtube.comwatch?v=UGqZsSuG7ao Water Chemistry All surface water contains o Dissolved substances Dissolved ions Sum of all dissolved solutes plus silicais the TDS Suspended substances (aka suspended sediment) o Usually 0.004mm to 1.0mm o Where does it come from? o Kill animal life. Through turbidity? Turbidity: depth of visibility Inorganic and organic substances o Sand, cilica, rocks, animal waste
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