The main problems of recovery cutting oil from spent waste are high viscosity of cutting oil and
high content of nano-size particle. This study combined an innovative rotational circular-plate
ultrafiltration membrane filter with a scraping device to recycle the cutting oil and remove particles
fouling cake attached to the membrane surface, and was able to maintain cutting oil filtrate flux above
6.65 l/m2
/hr. Also, the proposed process is the practical solution for materials separation between
highly viscosity liquid and fine particles even nano-size. The results show the filtrate of ultrafiltration
membrane could meet the reuse requirements of less than 0.03% solid content. Analysis of blended oil
characteristics under different blending ratios was conducted, showing the optimum blending ratio of
recycled oil to new cutting oil was 6:4. The final production cost can be reduced over 27.4%. The
process can achieve waste reuse ratio of greater than 77.2%.
關聯:
Journal of Applied Science and Engineering 19(1), pp.75-82
