water pollution + treatment Flashcards
1
Q
step one
A
screening, removes large objects
2
Q
step two
A
ozone treatment, kills bacteria
3
Q
step three
A
precipitation, removes heavy metals
4
Q
step four
A
sand filtration
5
Q
step five
A
activated carbon, removes organic compounds
6
Q
step six
A
microfiltration, removing small particulates
7
Q
step seven
A
chlorine, kills remaining acteria
8
Q
three examples of water polution
A
fertilizers, microplastics/polymers, heavy metals
9
Q
effects of fertilizers polluting water
A
eutrophication!!!
- encourages algae growth
- blocks out sunlight for aquatic plants beneath
- plants die
- bacteria population rapidly grows, feeding on the decomposing dead plants
- uses up the dissolved oxygen
- fish die
10
Q
effects of microplastics/polymers polluting water (6)
A
- absorb toxic compounds
- accumulate in food chain
- non biodegradable (saturated bonds)
- allow bacterial growth
- marine life can get trapped in plastic
- formation of plastic islands
