Wastewater Treatment Operator Class I Practice Questions - ABC WPI Wastewater Treatment Operator Class I Certification Exam

What does TSS stand for and what does it measure?

Total Suspended Solids — the dry weight of particles retained on a filter Total Settleable Solids — only solids that settle in a 1-hour cone test Treated Sludge Solids — solids in finished biosolids cake Total Soluble Solids — only dissolved material

Correct Answer:

Total Suspended Solids — the dry weight of particles retained on a filter

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