Tag: volatile suspended solids

Total Suspended Solids (TSS) & Volatile Suspended Solids (VSS)

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TSS testing measures the total concentration of suspended (non-soluble) solids in the aeration stabilization basin (ASB) or in effluents. The total suspended solids (TSS) data is critical in determining the operational behavior of a waste treatment system. It is usually a permitted test and solids must be kept at a minimum. In order to test […]

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Mixed Liquor Volatile Suspended Solids (MLVSS) & (MLSS)

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MLSS testing measures the total concentration of mixed liquor suspended (non-soluble) solids in the aeration basin of an activated sludge system. The mixed liquor suspended solids (MLSS) data is critical in determining the operational behavior and solids inventory of the system and it is used to determine when to waste and/or recycle sludge. In order […]

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Dissolved Oxygen Uptake Rate (DOUR) Test

Biological waste treatment in the Aerated Stabilization Basin (ASB) process and in Activated Sludge systems is based on the ability of microorganisms to utilize dissolved oxygen in the process of breaking down the soluble organic substances present in the process effluent. The dissolved oxygen uptake rate (DOUR) test measures the respiration rate of organisms. Since […]

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