MLVSS stands for which of the following?

Study for the Texas Wastewater D Test. Use flashcards and multiple choice questions, each with hints and explanations. Prepare thoroughly for your exam!

Multiple Choice

MLVSS stands for which of the following?

Explanation:
Mass of Volatile Suspended Solids. In wastewater work, "volatile" means organic material that burns away when heated, and "suspended solids" are the solids kept in suspension by the sample’s filter. MLVSS therefore represents the mass of the organic portion of the suspended solids in the sample. It’s determined by drying a sample and weighing, then heating to a high temperature (around 550°C) to burn off the organics; the portion that volatilizes corresponds to the volatile suspended solids. This value is used to estimate the active biomass in the sludge and to relate to the total suspended solids for process performance. The other phrasings aren’t the standard term used in practice.

Mass of Volatile Suspended Solids. In wastewater work, "volatile" means organic material that burns away when heated, and "suspended solids" are the solids kept in suspension by the sample’s filter. MLVSS therefore represents the mass of the organic portion of the suspended solids in the sample. It’s determined by drying a sample and weighing, then heating to a high temperature (around 550°C) to burn off the organics; the portion that volatilizes corresponds to the volatile suspended solids. This value is used to estimate the active biomass in the sludge and to relate to the total suspended solids for process performance. The other phrasings aren’t the standard term used in practice.

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