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Biology, 20.07.2019 21:30 stephany94
Which of the following demonstrate the environmental advantages of secondary and tertiary treatment of wastewater? a) secondary treatment lowers the bod of wastewater making is safe to return to the environment. b) tertiary treatment removes excess nutrients such as nitrogen and phosphorus which can cause algae growth. c) disinfection is used to kill disease-carrying bacteria. d) all of these.
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Which of the following demonstrate the environmental advantages of secondary and tertiary treatment...
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