Question 1022 of 229 · California Water Distribution Operator Exam
Which is an advantage of using chloramines instead of free chlorine in a distribution system?
Exactly one answer is correct.
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Correct answer to question 1022
- A: The residual lasts longer and fewer trihalomethanes form
Explanation
Monochloramine is stable, so it reaches the far ends of a system and produces fewer THMs. It is a weaker disinfectant, and the residual still has to be monitored.
More questions: Disinfection
- 1023Which problem is specific to chloraminated distribution systems?
- 1024Water that will be used for kidney dialysis or fish tanks needs special treatment when the system uses chloramines. Why?
- 1025On the chlorine dose curve, what is the breakpoint?
- 1026In a breakpoint chlorination curve, what makes up the residual after the breakpoint is passed?
- 1027What is the main cause of disinfection byproducts such as trihalomethanes in a distribution system?
- 1028Which AWWA standard covers disinfection of water storage facilities?