... by the means of liquid-liquid separation technology. the water-oil separation is consist of prefilter,coalescing filter,separation filter,absorbmnt ... is widely used for treatment of oil-waste from shipping,metallury,oil etc.After filtration.the oil; content of the water≤5mg/L ... , which can cut the water wrapped oil open into exigious oil drops and from large oil drops then enter the separating filter, ...