For environmental protection projects, how can an oil-water separation tank be designed by referring to the design of an oil-water separator?
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Oil-water separators are used in many places and are quite common in the chemical industry. But how can one design an oil-water separation tank by referring to oil-water separators? And what control methods are used to prevent water from mixing with oil or oil from mixing with water in the discharged material?
This is suitable for discussions in the field of environmental water treatment
If the water volume isn’t large, it’s better to buy one with a steel structure. We also manufacture such equipment. If the water volume is greater than 1000 t/d, it is recommended to use an oil and gas separation flotation tank.
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This is a typical dynamic design problem for liquid-liquid separators. To ensure that the dispersed phase remaining in the continuous light phase at the light phase outlet of the separator meets the design requirements, and simultaneously to ensure that the dispersed phase remaining in the continuous heavy phase at the heavy phase outlet of the separator meets those requirements, it is necessary for the time t1 during which the dispersed phase of the specified size remains in one continuous phase before reaching the opposite continuous phase to be less than the residence time t2 of the separator. For example, it is required that the size of the oil bubbles in the aqueous phase outlet of the separator not exceed 27 microns. To meet this requirement, the time t1 required for the oil droplets with a size of 27 microns or more in the aqueous phase to rise from the aqueous phase to the continuous oil phase as the fluid flows through the separator, is less than the residence time t2 required for the continuous aqueous phase to pass from entering the separator to exiting it. The maximum value of the time t1 required for the dispersed oil bubbles to rise to the continuous oil phase corresponds to the maximum distance they can travel upward; in other words, it is the maximum distance that the dispersed oil bubbles at a depth of 27 microns or more below the continuous water phase can travel before reaching the continuous oil phase. The designer must minimize t1 while maximizing t2 in a separator of reasonable size. Similarly, the designer must also ensure that the size of the dispersed water droplets at the continuous oil phase outlet of the separator meets the technical requirements. Therefore, both pairs of t1 must be satisfied simultaneously