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    Sludge treatment membrane apparatus
    1.
    发明授权
    Sludge treatment membrane apparatus 失效
    污泥处理膜装置

    公开(公告)号：US5651889A

    公开(公告)日：1997-07-29

    申请号：US621237

    申请日：1996-03-25

    申请人： Sakae Wataya ,  Kimio Yamamoto ,  Hirokazu Shirage ,  Kouji Irie ,  Tadaaki Hashimoto

    发明人： Sakae Wataya ,  Kimio Yamamoto ,  Hirokazu Shirage ,  Kouji Irie ,  Tadaaki Hashimoto

    IPC分类号： B01D61/18 ,  B01D63/08 ,  B01D65/02 ,  B01D65/08 ,  C02F3/12 ,  B01D63/00

    CPC分类号： B01D65/08 ,  B01D61/18 ,  B01D63/082 ,  B01D65/02 ,  C02F3/1268 ,  B01D2321/16 ,  B01D2321/185 ,  Y02W10/15

    摘要： A membrane apparatus includes a bubble supplying portion for supplying micro bubbles which is provided at a location in the vicinity of the entrance of a flow passage for raw liquid. Thus, the growth of a gel layer on a membrane surface can be prevented, and a large filtering amount can be maintained while preventing sludge from blocking the membrane. Moreover, since bubbles uniformly pass through the inter-membrane passages, sludge blocking can be evenly prevented over the entire surface of the membrane. When a flat membrane is used as the filtering membrane, there is provided an advantage of reducing the frequency of work for disassembling the frame and cleaning the membranes. A membrane treatment apparatus includes the membrane apparatus, an aeration apparatus, a circulating tank, and a filtrate pump. Since the relative density of raw liquid which has received bubbles in the membrane apparatus decreases, a difference in density is produced between that raw liquid and raw liquid which is newly supplied from the circulating tank to the passage and which contain no bubbles. Since this difference in density causes a flow of raw liquid, no power is needed for circulation. Accordingly, a circulating pump can be omitted so as to reduce costs including initial cost and operation cost.

    摘要翻译： 膜装置包括用于供给微气泡的气泡供给部，其设置在原液的流路的入口附近的位置。 因此，可以防止膜表面上的凝胶层的生长，并且可以保持大的过滤量，同时防止污泥堵塞膜。 此外，由于气泡均匀地通过膜间通道，因此可以在膜的整个表面上均匀地防止污泥堵塞。 当使用平膜作为过滤膜时，提供了降低拆卸框架和清洁膜的工作频率的优点。 膜处理装置包括膜装置，曝气装置，循环罐和滤液泵。 由于膜装置中接收到气泡的原液的相对密度降低，因此从原液和从循环罐向通道新供给的原液和不含气泡的原料液之间产生密度差。 由于这种密度差导致原液流动，所以不需要电力进行循环。 因此，可以省略循环泵，以便降低包括初始成本和运行成本在内的成本。