A large stream flowing through a highly industrialized area must serve as the source of a community's water supply. The turbidity of the water ranges from 30 to 60 NTU, alkalinity exceeds 100 mg/L, hardness is about 50 mg/L as CaCO3, and the water also contains regulated synthetic organic compounds resulting from industrial discharges. (only b)
a) Identify pollutants that require treatment .
b) Draw a schematic diagram of a treatment plant that should render this water potable. Identify all unit operations/processes, state their purpose, and identify all chemicals and show points of chemical addition and sludge/solids removal.
c) what major differences would you expect if the water supply source had been groundwater?