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    • 9. 发明授权
    • Process of and apparatus for ultrafiltration
    • 超滤的方法和设备
    • US4689153A
    • 1987-08-25
    • US763051
    • 1985-08-06
    • Heinrich FollmannHeinrich Ebner
    • Heinrich FollmannHeinrich Ebner
    • B01D61/20B01D20060101B01D36/04B01D37/04B01D61/14B01D65/08C12J1/00C12J1/10B01D13/00
    • B01D61/145B01D63/00B01D2313/22
    • In an ultrafiltration of a liquid having a starting solids concentration, in which the liquid is pumped through a filtration circuit including at least one membrane filter, and the loss of liquid resulting from the continuous extraction of filtrate from the filtration circuit is compensated for by feeding unfiltered liquid into the filtration circuit from a separate concentrate container which is connected with the filtration circuit by a feedline and a return line for flow of liquid to and from the filtration circuit, the liquid in the filtration circuit is periodically and repeatedly supplemented by additions of fresh unfiltered liquid taken from a reservoir having the starting solids concentration so as to repeatedly bring the solids concentration in the filtration circuit closer to the starting concentration. The individual fresh liquid additions from the reservoir are initiated in response to the level of the liquid in the concentrate container falling from a predetermined higher level to a predetermined lower level and are interrupted when the liquid in the container again reaches the given higher level. Filtration cycles lasting for a few weeks between each two successive shutdowns of the system for cleaning are achieved. The foregoing abstract is not to be deemed a complete exposition of the present invention, however, the details of which can be discerned only by reference to and from the hereto appended specification and claims.
    • 在具有起始固体浓度的液体的超滤中,其中液体被泵送通过包括至少一个膜过滤器的过滤回路,并且由过滤回路连续提取滤液而导致的液体损失被补偿 未过滤的液体从分离的浓缩容器进入过滤回路,该浓缩容器通过进料管与过滤回路连接,并且用于将液体流入和流出过滤回路,使过滤回路中的液体周期性地反复补充, 从具有起始固体浓度的储存器取出的新鲜未过滤液体,以便使过滤电路中的固体浓度反复更接近于起始浓度。 响应于浓缩物容器中的液体从预定的较高水平下降到预定的较低水平,启动来自贮存器的各个新鲜液体添加物,并且当容器中的液体再次达到给定的较高水平时中断。 实现了在清洁系统的每两次连续停机之间持续数周的过滤循环。 上述摘要不被认为是本发明的完整论述,但是,仅通过参考附图的说明书和权利要求书可以看出其细节。