California Wastewater Treatment Operator Practice Exam

Disable ads (and more) with a membership for a one time $2.99 payment

Prepare for the California Wastewater Treatment Operator Exam. Gain knowledge through multiple-choice questions and flashcards. Understand key concepts and regulations essential for wastewater treatment operations in California.

Start Multiple Choice Practice Test
Start Flash Cards

Practice this question and more.

What is the correct formula for solids in raw wastewater?

  1. Non settleable solids + settleable solids = total suspended solids

  2. Non settleable solids = settleable solids - total suspended solids

  3. Non settleable solids x settleable solids = total suspended solids

  4. Total suspended solids / settleable solids = non settleable solids

The correct answer is: Non settleable solids + settleable solids = total suspended solids

Total suspended solids (TSS) is the sum of non-settleable solids and settleable solids. Non-settleable solids are solids that remain suspended in water and do not settle out over time, while settleable solids are solids that settle out in a given period of time. Therefore, the formula for TSS must include both types of solids, making option A the correct answer. Option B is incorrect because it shows the result of subtracting two different types of solids, which is not an accurate representation of TSS. Option C is incorrect because multiplying two different types of solids is not a valid way to calculate TSS. Option D is incorrect because dividing TSS by settleable solids does not provide a complete picture of all solid particles in the wastewater.

More Questions Like This