Temperature-responsive membrane, temperature-responsive membrane module, and membrane filtration system in which the same are used

A temperature-responsive, membrane module technology, applied in the direction of membrane, ultrafiltration, membrane technology, etc., can solve problems such as energy increase, and achieve the effects of increased operating speed, reduced cost, and good washing effect

Inactive Publication Date: 2007-05-16
KK TOSHIBA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the energy required to operate the membrane filtration system may need to increase

Method used

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  • Temperature-responsive membrane, temperature-responsive membrane module, and membrane filtration system in which the same are used
  • Temperature-responsive membrane, temperature-responsive membrane module, and membrane filtration system in which the same are used
  • Temperature-responsive membrane, temperature-responsive membrane module, and membrane filtration system in which the same are used

Examples

Experimental program
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Embodiment Construction

[0039] (Embodiment of Temperature Responsive Membrane)

[0040] Figures 1A and 1B show embodiments of temperature responsive membranes of the present invention.

[0041] The temperature-responsive membrane 10 of the present invention is composed of a membrane substrate 1 and a pore size adjusting member 2 . The film substrate 1 is made of a polymer material. The pore size adjusting member 2 is formed by adding a polymer material on the outer surface side of the membrane substrate 1 . The polymer material reversibly expands / contracts at a given temperature. N-isopropylacrylamide is an example of the pore size adjusting member 2 . N-isopropylacrylamide itself does not respond to temperature. However, polymers obtained by polymerizing N-isopropylacrylamide are responsive to temperature.

[0042] As shown in FIG. 1A, raw water (fresh water such as river water, ground water, and lake water; waste water such as stored rainwater, industrial waste water, and sewage; and sea water...

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Abstract

Provided is a membrane filtration system which makes it possible to improve operation rate of the system by increasing the amount of water to be treated, and to reduce costs required for chemical washing and replacement of a membrane. Accordingly, a total running cost is reduced. The membrane filtration system is provided with temperature-responsive membrane modules for filtering supplied raw water to discharge it as treated water. In each of the temperature-responsive membrane modules, temperature-responsive membranes are formed into any one of planar and cylindrical forms, and are then filled into a container.

Description

[0001] Cross References to Related Applications [0002] This application is based on and claims the benefit of priority from a prior Japanese Patent Application No. 2005-324151 filed on November 8, 2005. The entire content of this application is incorporated into this application by reference. technical field [0003] The present invention relates to a temperature-responsive membrane, a temperature-responsive membrane module and a membrane filtration system using them, the membrane filtration system is suitable for treating water: for example, fresh water such as river water, ground water and lake water; waste water such as stored rainwater, industrial wastewater and sewage; and seawater such as ballast water. Background technique [0004] In the field of water treatment, for example, microfiltration membranes, ultrafiltration membranes, nanofiltration membranes, and reverse osmosis membranes have been used so far to filter raw water (fresh water such as river water, groun...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D71/56
CPCB01D61/147C02F2209/11C02F2303/16B01D61/142B01D2313/48B01D61/145C02F2209/02B01D2317/04B01D65/02C02F1/02B01D2321/162C02F2209/40C02F2209/03B01D2311/10B01D2323/283B01D61/22C02F1/444B01D61/146
Inventor 松代武士樱井学关秀司中村秀树日下谦一相马孝浩堤正彦
Owner KK TOSHIBA
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