Abstract:
A cartridge type hollow-fiber membrane module of the present invention includes: a housing; a plurality of hollow fiber membranes housed in the housing; a first potting part which bundles first ends of the hollow fiber membranes while keeping the first ends open; a second potting part which bundles second ends of the hollow fiber membranes while keeping the second ends sealed; a fixing part which detachably fixes the first potting part to the housing; a sealing part which liquid-tightly seals a space between the first potting part and the housing; and a holding part which holds the second potting part so that the second potting part is detachable from the housing and so that liquids can pass through a space between the second potting part and the housing.
Abstract:
The present invention relates to a method for filtering a microbial culture solution using a membrane module, said method comprising four stages including (a) cross-flow filtration of the microbial culture solution, (b) rinsing with water, (c) washing with a chemical solution and (d) rinsing with water, wherein: the filtrate passing through the membrane module in the cross-flow filtration has a total sugar concentration of 1,000-100,000 mg/1 inclusive and a protein concentration of 50-1,000 mg/l inclusive; the aforesaid stage (c) comprises step (c-1) for washing with a chemical solution containing a hypochlorite and a nonionic surfactant; and the aforesaid stages (a) to (d) are repeated in this order.
Abstract:
In order to efficiently transport a filtration target liquid to a separation membrane module and to facilitate additional simplification of equipment in a filtration device including the separation membrane modules in which a plurality of lines thereof are disposed in series, a filtration device according to the present invention is a filtration device including a plurality of separation membrane modules each of which separates a liquid to be filtrated into a permeated liquid and a non-permeated liquid, in which the filtration device includes: a series non-permeated liquid flow channel that forms a series unit by connecting non-permeation sides of the plurality of separation membrane modules in series; and a parallel permeated liquid flow channel that forms a parallel unit by connecting permeation sides of the plurality of separation membrane modules in parallel.
Abstract:
This hollow fiber membrane module is provided with: a cylindrical case having a first end and a second end in the direction of height; a plurality of hollow fiber membranes accommodated in the cylindrical case; and a first potting unit attaching the end parts of the plurality of hollow fiber membranes positioned at the first end of the cylindrical case while the end parts are open. The hollow fiber membranes have a rupture strength of 23 MPa or more. The filling rate for the hollow fiber membranes is 40-80%.
Abstract:
A cartridge type hollow fiber membrane module including a housing, a hollow-fiber membrane bundle having a plurality of hollow fiber membranes, a first potting part that bonds the hollow fiber membranes at at least one end of the bundle of the plurality of hollow fiber membranes such that the hollow fiber membranes are open, and a sealing material that fixes the first potting part to the housing liquid-tightly, wherein the first potting part comprises an inner potting part and an outer potting part, wherein the inner potting part and the outer potting part are both formed of a potting material, wherein the sealing material is in contact with the outer potting part, and wherein both the inner potting part and the outer potting part are formed in a sealing direction of the sealing material.The cartridge type hollow fiber membrane module is free of leakage and contamination due to separation of a potting material even when steam sterilization is performed.
Abstract:
The present invention relates to a hollow fiber membrane module provided with: a tubular casing having a first end and a second end in the axial direction; a plurality of hollow fiber membranes; a first potting part; and a second potting part, the hollow fiber membrane module further having a flow regulation structure in which a fluid flowing outside the hollow fiber membranes from the second end side toward the first end side forms a flow directed to the radial center on the second end side of the first potting part, and further forms a radial flow directed from the radial center to the radially outer peripheral side on the second end side of the first potting part.
Abstract:
The present invention provides a hollow fiber membrane module that can effectively resolve the accumulation of suspended solids within the membrane module, lower running costs, and also operate stably. The present invention relates to a hollow fiber membrane molecule provided with: a cylindrical case having a first end and a second end in the direction of height; a plurality of hollow fiber membranes accommodated within the cylindrical case; and a first potting part accommodated within the cylindrical case and attaching the plurality of hollow fiber membranes together such that the end parts of the plurality of hollow membrane fibers at a first end side of the cylindrical case are open. The hollow fiber membranes are porous hollow fiber membranes having a breaking strength of 23 MPa, and the hollow membrane module has a membrane area per unit volume of 800-3700 m2/m3. The filling fraction for the hollow fiber membranes in a cross-section orthogonal to the direction of height of the cylindrical case is 25-38%.