EQ (Equalization) Tank
Among the most effective waste management procedures is equalization of the wastewater. Equalization can be of two types: flow equalization and contaminant equalization (COD, TSS, pH, etc.). The use of flow equalization tanks following the API separators provides a relatively constant flow rate and contaminant loading to the biological treatment system. We are trying to reduce or control variability in wastewater characteristics.
With equalization, you can provide a more uniform effluent to downstream processes. This becomes particularly beneficial (and important) when biological treatment follows. And here again, we find in wastewater, as in life, that size really does matter, particularly so when it comes to EQ tanks. The equalization tank(s) must be large enough to absorb and dampen concentrated batch dumps or spills within the process.