water resource management
1. List three processes used for city water treatment:
Fill in the blanks:
2,Disinfectants used in city water treatment plants include___________ , _______ and_________ .
Blank 1: Blank 2: Blank 3: Question 3 (1 point)
Softening is to remove___________ from water.
Blank 1: Question 4 (1 point)
_____________ controls the solids' settling velocity.
Blank 1:
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