Numerical simulation and experimental research on the oil removal efficiency during the oily wastewater separation by hydrocyclone.

As the overflow diversion ratio increases, the oil volume fraction at the bottom outlet exhibits segmented characteristics When the overflow diversion ratio increases from 0.1 to 0.2, the oil volume fraction at the bottom outlet decreases from 1.7% to 0.8% When the overflow diversion ratio continues to increase to 0.4, the oil volume fraction at the bottom outlet also shows an increasing trend, gradually increasing to 1.5% After the overflow diversion ratio exceeds 0.4, the oil volume fraction at the bottom outlet shows a decreasing trend When the overflow diversion ratio continues to increase to 0.95, the oil volume fraction at the bottom outlet drops to 0.2%.

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