4. Conclusions
In the case of the food processing factory, Separative Work Unit was determined by the decrease of the
separation ability of the oil-water separation technology from 100% by 0.01%. Based on the hearing investigation,
the value function was determined. Using the value function, SWU was calculated and the separation ability of oilwater
separation technology to produce value was determined as over 99.70%. Based on the results of SWU, the cost
recovery period of the food processing factory can be revealed. This period further was used for decision of
introducing oil-water separation technology.