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What is the polymer dosage in mg/L?
A water treatment plant used 28 pounds of cationic polymer to treat 1.6 million gallons of water during a 24-hour period.



A. 2.1 mg/L
B. 2.2 mg/L
C. 2.4 mg/L
D. 2.6 mg/L
E. 2.8 mg/L

This question is part of CA Water Treatment Plant Operator Quiz Chapter 4
Asked by PaulMJr, Last updated: Feb 19, 2020

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2 Answers

RagweedFarmer

RagweedFarmer

Answered Feb 25, 2017

2.1
mg/l and ppm are the same
1.6 million gallons x 8.34lbs per gallon = 13.344 million pounds, so 13.344 is 1ppm of 1.6 million gallons
28lbs / 13.344 =2.0983213 rounded to 2.1
 

John Smith

John Smith

Answered Nov 19, 2016

2.1 mg/L
 

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