Testing for different categories of compounds in wastewater—such as readily biodegradable, slowly biodegradable, recalcitrant, and toxic compounds is crucial for several reasons related to environmental protection, wastewater treatment efficiency, and public health....
In the Kraft paper-making process white liquor, which is NaOH (sodium hydroxide) and Na2S (sodium sulfide), is used to “cook” wood chips in a piece of equipment known as the digester. In the digester, the wood chips are “cooked” using high temperature and pressure in...
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. It...