adjusting the temperature of the permeate fraction to within the rang of 0-20oC; subjecting the permeate fraction to a microfiltration (MF) treatment, using a MF device having a mean pore size of from 0.01 to 100 micron.

• 调节渗透部分的温度在0-20摄氏度之间； 用孔径为0.；01-100微米的MF装置对渗透部分作微过滤处理。