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18 Cards in this Set
- Front
- Back
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study of microorganisms and activities in natural waters
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Aquatic Microbiology |
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Which zone is along the shore rooted vegetation? |
Littoral zone |
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Which zone is the open water below the shore where many photosynthetic algae live? |
Limnetic zone |
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Which zone is the deeper water under the limnetic zone, whereanaerobic purple and green photosynthetic bacteria live? |
Profundal zone |
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Which zone is the bottom sediment where there is no light or oxygen, where methane producing bacteria live? |
Benthic zone |
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Which enzyme worksin the electron transport chain to help bioluminescent microbes emit electron energy as a photon oflight? |
luciferase |
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Which microrganisms are responsible for bioluminescense of surface of lakes? |
Dinoflagellates |
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For water treatment, what happens in the mixing tank? What is added and why? |
Flocculant is mixed in the water; bigger contaniments stick to it and it becomes heavy enough to sink to the bottom |
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What happens after floccing? |
The water is filtered, which eliminates most microbes and viruses |
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What happens after filtration? |
What is disinfected with chlorine or ozone treatment or UV rays, and then stored for comsumers |
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I help scientists measure how much biodegradable organic matter is in water. A high number for me means lots of pollution and is bad news. |
Biochemical Oxygen Demand |
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What percentage of BOD does primary treatment remove? |
25-30% |
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What does primary treatment of water involve? |
The settling of solids from the water |
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What does secondary treatment involve? |
Putting water in an aeration tank so that aerobic microbes have all the oxygen they need and they eat away lots of bad stuff. |
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Where does the water go after secondary treatment? |
It goes for secondary clarification. (settling) |
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Where does it go after it goes for secondary clarification? |
To the chlorination chamber |
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How much nitrogen and phosphorous is contained in water after it is treated? |
50% nitrogen; 70% phosphorous |
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What is tertiary treatment designed to minimize? |
eutrophication
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