在线反冲在1,3-丙二醇发酵液膜过滤中的应用

The application of on-line recoil on 1,3-propanediol fermentation broth membrane filtration

膜过滤是生物法1,3-丙二醇(PDO)分离提取工艺中的关键工序,膜污染是影响膜过滤通量和清洗水用量的核心因素,在膜过滤过程中增加在线反冲,可以有效降低膜污染对过滤通量的影响,减缓膜过滤通量下降的速度,将膜过滤设备清洗周期由1d/次延长至5d/次。

Membrane filtration is a key process in the separation of 1, 3-propanediol broth.the membrane fouling affecting the membrane flux, so it is the key factor of the amount of washing water.On-line recoil in the process of membrane filtration can reduce the effect of the membrane fouling on filtration flux, and reduce the rate of decline of filtration flux.The cleaning cycle was extend to five days from one day.