Florida Drinking Water Operator "B" Practice Test

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Study for the Florida Drinking Water Operator "B" Test. Use multiple choice questions, flashcards, and explanations to prepare. Ace your certification!

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What could cause a higher concentration of scaling in water treatment systems?

High alkalinity
Low sediment
Filtered water
Increased pressure

The correct answer is: High alkalinity

High alkalinity in water can lead to a higher concentration of scaling in water treatment systems due to its impact on calcium carbonate solubility. When water has high alkalinity, it typically indicates a higher concentration of bicarbonates. As the water is heated or experiences changes in pressure, carbon dioxide can be released, and the solubility of calcium carbonate is decreased. This decrease can cause the calcium carbonate to precipitate out of the solution, leading to scale formation on pipes, filters, and other equipment. In contrast, low sediment typically indicates that there are fewer solids or particulates that can contribute to scaling. Filtered water would generally have had impurities removed and would not contribute to scaling. Increased pressure can affect the solubility of gases like carbon dioxide more than it influences scaling; thus, its direct relationship with scaling isn't as significant as the impact of alkalinity. Therefore, high alkalinity is the primary factor leading to increased scaling in water treatment systems.