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    • 13. 发明专利
    • Regeneration of porous hollow yarn filter membrane
    • 多孔中空滤膜的再生
    • JPS6150605A
    • 1986-03-12
    • JP16884084
    • 1984-08-14
    • Jgc CorpKuraray Co Ltd
    • TABUCHI MITSUHIKOSHIBATA SETSUOKURUMADA NORIMITSUHAMAMOTO YOSHITOKUSUDO OSAMU
    • B01D63/04B01D65/02
    • PURPOSE: To prevent the damage possibility of a porous hollow yarn filter membrane by enhancing the releasability of fine particles such as suspended substances adhered to the porous hollow yarn filter membrane, by providing a constant flow amount backwashing mechanism to a backwashing gas supply line.
      CONSTITUTION: A constant flow amount backwashing mechanism C consisting of a pressure reducing valve 11 and a flow regulator 13 is provided on a backwashing gas supply line 9. When a suspended substance is adhered to the surface of a porous hollow yarn filter membrane 2 and filtering capacity is lowered, a raw solution supply valve 5 and a filtrate discharge valve 7 are closed and a backwashing gas supply valve 10 is opened in such a state that the filter membrane 2 is immersed in the solution and a constant flow amount of pressurized gas is introduced into the hollow yarns of the filter membrane 2 from the line 9 through the filtrate zone part A of a filter vessel 1 under pressure and gas bubbles are generated from the surface of the membrane to release and remove the sticky substance such as the suspended substance or microorganism accumulated on and adhered to the surface of the membrane 2. Backwashing gas is introduced into a backwashing solution receiving tank 3 from a backwashing gas outlet line 16 to drop the suspended substance and exhaust through the demister 4.
      COPYRIGHT: (C)1986,JPO&Japio
    • 目的:为了通过提供反冲洗气体供给管线的恒定的流量反冲洗机构,通过提高附着在多孔中空丝过滤膜上的悬浮物质等微粒的剥离性,防止多孔中空丝过滤膜的损伤。 构成:在反冲洗气体供给管线9上设置有由减压阀11和流量调节器13构成的恒定流量反冲洗机构C.当将悬浮物粘附到多孔中空丝过滤膜2的表面并过滤时 容量降低,原料溶液供给阀5和滤液排出阀7关闭,反冲洗气体供给阀10在将过滤膜2浸渍在溶液中并且恒定流量的加压气体为 通过过滤器容器1的滤液区A从管线9引入过滤膜2的中空丝,并从膜的表面产生气泡,以释放和除去粘性物质如悬浮物 或微生物积聚在膜2的表面上并粘附在其上。反冲洗气体从反冲洗被引入反冲洗溶液接收罐3中 气体出口管线16以将悬浮物质滴落并通过除雾器4排出。