Topic 8.11-Sewage Treatment
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5 Terms
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Sewage Treatment
•Primary Treatment
•Secondary Treatment
•Tertiary Treatment
UV/Ozone Treatment
•Secondary Treatment
•Tertiary Treatment
UV/Ozone Treatment
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Primary Treatment
•Removal of large objects and solid waste
•Uses screens and grates with settling to follow
•Uses screens and grates with settling to follow
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Secondary Treatment
•Using bacteria to break down organic matter into inorganic sludge and CO2.
•Sludge falls down
•Tank is aerated so bacteria can break material down faster
•Sludge falls down
•Tank is aerated so bacteria can break material down faster
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Tertiary Treatment
•Uses ecological or chemical process to remove any pollutants left in the water
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One Final Step
•Water can be treated with chlorine, ozone or UV rays in order to kill any final bacteria
Note 
Flashcards (47)