Assertion: chlorine dioxide's chlorine | /r/AtLocation | raw water
Facets:
value: directly
type: MANNER
value: usually
type: TEMPORAL
value: in the pre-chlorination step
type: TEMPORAL
value: to eliminate algae
type: PURPOSE
Source sentences:
text: Chlorine is added to raw water to eliminate algae and other forms of aquatic life from the water so they won’t cause problems in the later stages of water treatment.
text: In the pre-chlorination step, the chlorine is usually added directly to the raw water (the untreated water entering the treatment facility), or added in the flash mixer (a mixing machine that ensures quick, uniform dispersion of the chlorine).